Ventricle Lesions Research Articles

Dysgeusia and paresthesia following suspension microlaryngoscopy: review and recommendations for risk reduction

BackgroundDysgeusia or altered taste is a rare complication following suspension microlaryngoscopy with the incidence ranging from 2.9 to 12.1%. We report this with recommendations to avoid similar complications following suspension laryngoscopy, tonsillectomy, and tongue base surgery which require pressure to be placed on the tongue for better surgical field visualization.Case presentationA 53-year-old man with underlying diabetes mellitus presented with long standing history of irritative cough, globus sensation, and evidence of laryngopharyngeal reflux. A left ventricle swelling was noted on flexible laryngoscopy and neck. He underwent direct laryngoscopy and biopsy of the left ventricle lesion which revealed to be acute on chronic inflammation. Day 1 postoperatively, patient complained of reduced sensation over left hemi-tongue. A referral to a neurologist was made for further examination and he was found to have loss of taste over anterior two-third of tongue and treated with vitamin B complex. To date, dysgeusia remains persistent. Patient relayed his grievances to the hospital following these complications. Review of literature on relevant topic was made through PubMed, Web of Science, and Cochrane Library Database by two reviewers, working independently. Twenty-three papers, available in full, written in English language, containing number of cases, type of surgery, and complications were extracted and studied.ConclusionsRisk of dysgeusia and paresthesia postoperatively should be informed during consent taking for all patients undergoing tonsillectomy, laryngeal microsurgery, and tongue base surgery. Zinc deficiency should be investigated in patients with persistent taste disturbance post-tonsillectomy. Intermittent release during suspension laryngoscopy beyond 30 min to reduce post-surgical complications. Greater care should be taken to reduce the amount of force during the suspension laryngoscopy due to smaller oral and oropharyngeal structure in female. Keeping close to the tonsillar capsule particularly in mid and lower pole areas should be done in tonsillectomy using diathermy dissection.

Hemorrhagic Fourth Ventricle Colloid Cyst: A Report of an Unusual Presentation at an Uncommon Location

AbstractColloid cysts are benign cystic lesions characteristically arising from the third ventricle roof close to the foramen of Monro. Although incredibly rare, hemorrhage within a third ventricular colloid cyst is sparsely reported. To the best of our knowledge, no cases of hemorrhage within the fourth ventricle colloid have ever been documented. Here, we present an interesting case describing a hemorrhagic colloid cyst situated within the fourth ventricle of a 55-year-old female patient who presented with symptoms of headache, vomiting, and gait imbalance. The cyst was excised during surgery via a suboccipital microscopic telovelar approach. Our findings led us to the conclusion that, despite being extremely rare, colloid cysts in the fourth ventricle can present with hemorrhagic episodes, which can exacerbate symptoms and hasten neurological decline. As a result, the presence of unusual radiological characteristics in a fourth ventricle lesion should prompt medical practitioners to suspect an atypical colloid cyst. This consideration can be pivotal in making informed surgical decisions. Expedited management and a microsurgical approach are recommended strategies for a better outcome.

Low T3 syndrome is associated with the severity of myelin oligodendrocyte glycoprotein antibody-associated disease exacerbation.

Myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) is a rare autoimmune inflammatory disease of the central nervous system, (CNS) different from multiple sclerosis (MS) and neuromyelitis optica spectrum disorder (NMOSD). While numerous studies have delved into the involvement of thyroid antibodies (ATAbs) and thyroid function in NMOSD and MS. The objective of this study is to explore the clinical significance of thyroid dysfunction and ATAbs abnormalities in adult patients with MOGAD. 36 adult inpatients diagnosed with MOGAD and 47 sex- and age-matched healthy controls were enrolled. Patients were divided into two groups based on the presence or absence of low T3 syndrome. Demographics, clinical characteristics, and results of auxiliary examinations were compared across the subgroups. Moreover, an analysis was conducted to explore the correlations between thyroid hormone levels and Expanded Disability Status Scale (EDSS) scores. Thyroid dysfunction was notably more frequent in MOGAD patients than healthy controls (p < 0.0001), particularly low T3 syndrome (p=0.03). Furthermore, subgroup analyses revealed that the low T3 syndrome group exhibited higher EDSS scores and a higher proportion of individuals with EDSS scores > 3, in comparison to the non-low T3 syndrome group (p = 0.014, p = 0.046). However, no significant differences were observed in demographic characteristics, annual relapse rates, clinical phenotypes, laboratory and MRI results, and EEG abnormalities between the two groups. Additional Spearman's analysis showed significantly negative correlations between the TT3 and FT3 levels with EDSS scores (r = -0.367, p = 0.028; r = -0.377, p = 0.024). Typical brain lesions and paralateral ventricle lesions were significantly rare in patients with positive ATAbs compared to those with negative ATAbs (p = 0.0001, p = 0.03), although the incidence of ATAbs abnormalities did not differ significantly between MOGAD patients and healthy controls. Overall, this study confirmed thyroid dysfunction, especially low T3 syndrome, is frequent in adult MOGAD patients. Patients with low T3 syndrome exhibited elevated EDSS scores and a significantly higher incidence of unfavorable condition. additionally, the correlation analysis model manifests that FT3 and TT3 levels were negatively correlated with EDSS scores. These evidences indicate that low T3 syndrome is associated with the severity of MOGAD exacerbation.

Update on Prenatal Detection Rate of Critical Congenital Heart Disease Before and During the COVID-19 Pandemic.

Prenatal diagnosis of critical congenital heart disease (CCHD) has improved over time, and previous studies have identified CCHD subtype and socioeconomic status as factors influencing rates of prenatal diagnosis. Our objective of this single-center study was to compare prenatal diagnosis rates of newborns with CCHD admitted for cardiac intervention from the COVID-19 pandemic period (March 2020 to March 2021) to the pre-pandemic period and identify factors associated with the lack of CCHD prenatal diagnosis. The overall rate of CCHD and rates of the various CCHD diagnoses were calculated and compared with historical data collection periods (2009-2012 and 2013-2016). Compared with the 2009-2012 pre-pandemic period, patients had 2.17 times higher odds of having a prenatal diagnosis of CCHD during the pandemic period controlling for lesion type (aOR = 2.17, 95% CI 1.36-3.48, p = 0.001). Single ventricle lesions (aOR 6.74 [4.64-9.80], p < 0.001) and outflow tract anomalies (aOR 2.20 [1.56-3.12], p < 0.001) had the highest odds of prenatal diagnosis compared with the remaining lesions. Patients with outflow tract anomalies had higher odds for prenatal detection in the pandemic period compared with during the 2009-2012 pre-pandemic period (aOR 2.01 [1.06-3.78], p = 0.031). In conclusion, prenatal detection of CCHD among newborns presenting for cardiac intervention appeared to have improved during the pandemic period.

Catheter-tissue contact optimizes pulsed electric field ablation with a large area focal catheter.

Pulsed electric field (PEF) ablation relies on the intersection of a critical voltage gradient with tissue to cause cell death. Field-based lesion formation with PEF technologies may still depend on catheter-tissue contact (CTC). The purpose of this study was to assess the impact of CTC on PEF lesion formation with an investigational large area focal (LAF) catheter in a preclinical model. PEF ablation via a 10-spline LAF catheter was used to create discrete right ventricle (RV)lesions and atrial lesion sets in 10 swine (eight acute, two chronic). Local impedance (LI) was used to assess CTC. Lesions were assigned to three cohorts using LI above baseline: no tissue contact (NTC: ≤∆10 Ω, close proximity to tissue), low tissue contact (LTC: ∆11-29 Ω), and high tissue contact (HTC: ≥∆30 Ω). Acute animals were infused with triphenyl tetrazolium chloride (TTC) and killed ≥2 hpost-treatment. Chronic animals were remapped 30 days post-index procedure and stained with infused TTC. Mean (± SD) RV treatment sizes between LTC (n = 14) and HTC (n = 17) lesions were not significantly different (depth: 5.65 ± 1.96vs. 5.68 ± 2.05 mm, p = .999; width: 15.68 ± 5.22vs. 16.98 ± 4.45 mm, p = .737), while mean treatment size for NTC lesions (n = 6) was significantly smaller (1.67 ± 1.16 mm depth, 5.97 ± 4.48 mm width, p < .05). For atrial lesion sets, acute and chronic conduction block were achieved with both LTC (N = 7) and HTC (N = 6), and NTC resulted in gaps. PEF ablation with a specialized LAF catheter in a swine model is dependent on CTC. LI as an indicator of CTC may aid in the creation of consistent transmural lesions in PEF ablation.

Exoscopic removal of the fourth ventricle choroid plexus papilloma with use of a midline suboccipital osteoplastic craniotomy.

Choroid plexus papillomas are relatively rare vascular tumors. In this video, the authors present a pediatric patient who underwent exoscopic removal of the fourth ventricle choroid plexus papilloma with the use of a midline suboccipital osteoplastic craniotomy. The exoscope in the fourth ventricle lesion helps to improve visualization in all directions, with the surgeon being able to maintain a comfortable position throughout the procedure. In addition, the midline suboccipital osteoplastic craniotomy helps to reduce the potential risks of complications, in particular, CSF leak and craniovertebral junction instability. The video can be found here: https://stream.cadmore.media/r10.3171/2023.10.FOCVID23106.

Transesophageal Echocardiographic Assessment of Single Ventricle Physiology with Interrupted Inferior Vena Cava in a Case of Heterotaxy Syndrome Posted for Kawashima Procedure and Hepatic Vein Rerouting

Transesophageal echocardiography (TEE) is essential in delineating the anatomy, physiology, and perioperative management of single ventricle (SV) lesions. SV lesion is commonly associated with heterotaxy syndrome causing abnormal lateralization of organs across the body’s left-right axis. It is manifested as right atrial or left atrial isomerism. Patients with SV physiology require the Glenn procedure for surgical palliation whereas Fontan operation as definitive intervention. However, in a patient with interrupted inferior vena cava (IVC), the Kawashima procedure is used for definitive palliation. We report a 15-year-old female child diagnosed with SV physiology and interrupted IVC in association with heterotaxy syndrome posted for the Kawashima procedure and hepatic vein rerouting and illustrate the importance of perioperative TEE in delineating the anatomy, decision-making, and confirming the success of repair.

Treatment of brainstem and fourth ventricle lesions by the full neuroendoscopic telovelar approach

ObjectiveTo explore the surgical techniques, advantages, and disadvantages of neuroendoscopic telovelar approach in the treatment of brainstem and fourth ventricle lesions.MethodsThe clinical data of 5 patients treated by neuroendoscopic telovelar approach from March 2020 to March 2022 were analyzed retrospectively.ResultsAmong the 5 patients, there were 3 cavernous hemangiomas in pontine arm and 2 tumors in brainstem and fourth ventricle. All patients could successfully complete the operation, and 4 patients recovered well, other 1 patient discharged automatically for serious complications of other systems after the operation.ConclusionThe telovelar approach has gained popularity as a safe and effective strategy for lesions in fourth ventricular and brainstem. However, without removing the posterior arch of the atlas, it is difficult to enter the upper part of the fourth ventricle under a microscope. Transcranial neuroendoscopy can effectively compensate for the shortcomings of microscopy, whether used as an auxiliary measure for microsurgery or alone with proficient endoscopic techniques, it will provide greater application in minimally invasive surgery for fourth ventricle and brainstem lesions. By utilizing the excellent degree of freedom of transcranial neuroendoscopy, there is no need to open the posterior arch of the atlas, making the surgery more minimally invasive. However, the sample size of this study is small, and it was completed under the very mature neuroendoscopic technology of our team. Its general safety and practicality still require extensive clinical research validation.

Intractable headaches secondary to a solitary lateral ventricle lesion of neurocysticercosis

Abstract Taenia solium is a parasitic tape worm that causes neurocysticercosis (NCC), which is classically characterized by scattered, intraparenchymal brain lesions. However, in very rare cases, a solitary, lateral ventricle lesion may be all that is present, which can make diagnosis difficult. Herein, we report the case of a 34-year-old female from Western Europe who presented with 12 days of intractable headaches. Magnetic resonance imaging revealed a single, heterogeneous appearing intraventricular mass with mild enhancement located in the left lateral ventricle near the foramen of Monro. Using a minimally invasive image-guided tubular retractor system for surgical biopsy and resection, NCC was identified on histological analysis. The patient tolerated the procedure well, and her headaches improved. Although NCC is associated with exposure to raw pork and/or prior residence in an endemic location, these are not always present. This case highlights the unusual radiographic findings and benign clinical history providers may encounter with NCC.

Eight-year follow-up of cardiosphere-derived cell transplantation in patients with single ventricle congenital heart disease

Abstract Background Although transcoronary infusion of cardiosphere-derived cells (CDCs) in patients with single ventricles provides short-term improvement in cardiac function, the long-term efficacy is still unknown. Purpose: We tested the hypothesis that CDC infusion is associated with improved long-term clinical outcome in patients with single ventricles and heart failure. Methods: Patients were enrolled in the TICAP phase 1 (Transcoronary Infusion of Cardiac Progenitor Cells in Patients With Single Ventricle Physiology) and PERSEUS phase 2 (Cardiac Progenitor Cell Infusion to Treat Univentricular Heart Disease) trials between January 5, 2011, and January 30, 2015. The inclusion criteria were that patients were aged &amp;lt;6 years who were diagnosed with single ventricle lesions undergoing stage 2 (bidirectional Glenn: BDG) or stage 3 (total cavopulmonary connection: TCPC) palliation. Ventricular ejection fraction should be &amp;lt;60% during the initial screening through the final enrollment. Medical records of patients with single ventricles were obtained and analyzed as a control group who were eligible but were treated by staged palliation alone. We evaluated the effectiveness of CDCs using an integrated cohort study in 93 patients with single ventricles, including 41 patients who received CDC infusion and 52 controls. Results: At the time of this study, 36 patients with CDC infusion and 42 controls were alive without cardiac transplantation, with mean follow-up of 9.7±1.2 years. Survival rate did not differ between the 2 groups (log-rank P = 0.351), whereas overall patients treated by CDCs had lower incidents of late failure defined as late death, protein-losing enteropathy, plastic bronchitis, BDG or TCPC take down, disqualified TCPC candidate, Ross classification 3 or 4, or rehospitalization for heart failure (P = 0.048) compared with controls. Adverse events defined as unplanned cardiac operation, arrhythmia, thromboembolic events, cerebral hemorrhage, or tumor formation (P = 0.057) and unplanned catheter intervention (P = 0.094) did not differ between 2 groups. Conclusions: Intracoronary delivery of CDCs in patients with single ventricles did not improve all-cause mortality rate but significantly reduced the incidence of late failure at 8 years of follow-up.

Abstract 13241: Long-Term Clinical Outcome After Transcoronary Cardiosphere-Derived Cell Infusion in Patients With Single Ventricle Congenital Heart Disease

Introduction: Although transcoronary infusion of cardiosphere-derived cells (CDCs) in patients with single ventricles provides short-term improvement in cardiac function, the long-term efficacy is still unknown. Hypothesis: We tested the hypothesis that CDC infusion is associated with improved long-term clinical outcome in patients with single ventricles and heart failure. Methods: Patients were enrolled in the TICAP phase 1 (Transcoronary Infusion of Cardiac Progenitor Cells in Patients With Single Ventricle Physiology) and PERSEUS phase 2 (Cardiac Progenitor Cell Infusion to Treat Univentricular Heart Disease) trials between January 5, 2011, and January 30, 2015. The inclusion criteria were that patients were aged &lt;6 years who were diagnosed with single ventricle lesions undergoing stage 2 (bidirectional Glenn) or stage 3 (total cavopulmonary connection) palliation. Medical records of patients with single ventricles were obtained and analyzed as a control group who were eligible but were treated by staged palliation alone. We evaluated the effectiveness of CDCs using an integrated cohort study in 93 patients with single ventricles, including 40 patients who received CDC infusion and 53 controls. Results: At the time of this study, 35 patients with CDC infusion and 43 controls were alive without cardiac transplantation, with mean follow-up of 10.0±1.2 years. The absolute changes in brain natriuretic peptide ( P = 0.015), atrioventricular regurgitation grade ( P = 0.018), and weight for age ( P &lt; 0.001) from baseline to last follow-up showed significant improvements in CDC-treated patients compared with controls. Survival rate did not differ between the 2 groups (log-rank P = 0.351), whereas overall patients treated by CDCs had lower incidents of late failure ( P = 0.043) and adverse events ( P = 0.036) compared with controls. Multivariate proportional hazard regression analyses showed that CDC infusion was associated with lower risks of late failure ( P = 0.003) and adverse events ( P = 0.013). Conclusions: Intracoronary delivery of CDCs in patients with single ventricles did not improve all-cause mortality rate but significantly reduced the incidence of late failure and adverse events at 8 years of follow-up.

Abstract 15357: Assessing the Utility of Serial Fetal Echocardiography in Detecting In-Utero Changes for Single Ventricle Lesions

Introduction: Current guidelines recommend serial fetal echocardiograms (FE) for fetuses with single ventricle lesions (SV) to identify in-utero changes that can impact delivery management, but there is sparse data on the utility of serial FE. We aim to evaluate the incidence of serial FE changes in fetuses with SV. Hypothesis: There is a low incidence of in-utero changes in serial FE for fetuses with SV. Methods: Fetuses with SV and &gt; 1 serial visit between 1/1/2012 to 1/1/2023 were retrospectively reviewed. FE were reviewed for significant, defined serial changes in the following: atrioventricular valve, ventricular function, atrial communication, ductus arteriosus, umbilical artery, umbilical vein, systemic venous Dopplers, hydrops, arrhythmias. Fisher’s exact test was used to compare proportions with change between both segmental findings and SV sub-type. Results: A total of 721 FE for 248 patients were reviewed, the majority with hypoplastic left heart syndrome (HLHS) (64%) and tricuspid atresia (15%). There was a mean of 2.9 visits per patient and 21 days between FE. Out of 3,699 possible changes, there was a total of 56 (1.5%) changes in 41 patients seen on all follow-up FE (Table 1). The most common changes were worsening atrial level restriction (10, 2.4%) and arrhythmias (10, 2.4%), all of which were premature atrial contractions (p&lt;0.01). Out of 56 changes, only 20 (36%) were critical with clinical impact on perinatal management and 2 (4%) showed progressive, serial worsening. Most changes (85%) were noted in the third trimester. There were no differences in incidence of change on serial FE between SV sub-types (p=0.10). Conclusions: SV fetuses have a low incidence of significant physiologic change on serial FE, and progressive worsening of physiologic findings is even rarer. Special consideration should be given to those with HLHS who may develop atrial level restriction. This data should be considered in planning clinical follow-up intervals for fetal SV.

High risk of necrotising enterocolitis in term-born neonates with CHD delivered by caesarean section: a case-control study.

Necrotising enterocolitis is linked with altered intestinal microbiota, and caesarean birth is associated with imbalance of newborn intestinal microbiome. We aimed to investigate the role of delivery mode (vaginal or caesarean) and gestational age in the development of necrotising enterocolitis among term-born neonates (≥ 37 weeks) with CHD. Case-control study. We studied all newborns with CHD who underwent cardiac surgery during the neonatal (≤ 28 days of age) period, between 2007 and 2017. Totally, 60 cases of necrotising enterocolitis were matched (by year of birth and type of congenital heart lesion) with 180 controls (1:3 ratio). Multivariable conditional logistic regression was used to assess the study question. The overall prevalence of necrotising enterocolitis was 6.3% in term-born newborns with CHD. Neonates with a left-ventricular outflow tract lesion or single ventricle lesion accounted for 55% (n = 33) of cases. 62% (n = 37) cases were in the modified Bell's stage 2 or more for necrotising enterocolitis classification. In multivariable modelling, gestational age at birth was not associated with the development of necrotising enterocolitis [adjusted odds ratio per week increase, 95% confidence interval: 1.20 (0.90-1.60)]. Birth by caesarean delivery (compared to vaginal) was strongly associated with development of necrotising enterocolitis [adjusted odds ratio (95% confidence interval): 2.64 (1.31-5.29)]. We failed to identify an association between preoperative enteral nutrition and necrotising enterocolitis. This study showed a high risk of necrotising enterocolitis in newborns with critical CHD born via caesarean. This information is important given the high prevalence of planned birth by caesarean in newborns with CHD.

Clinical Results and Quality of Life After Transcortical Versus Transcallosal Resection of Adult Lateral and Third Ventricle Lesions: Long-Term Outcome

Resection of intraventricular tumors can be achieved using 2 main operative approaches: transcallosal or transcortical. This study aims to describe preoperative and postoperative factors as well as quality of life (QoL) based on long-term results in these patients. Patients underwent surgery of primary intraventricular lesions between 2007 and 2020 via a transcortical (group A) or transcallosal (group B) route. The main clinical parameters were completeness of resection, overall survival, surgical complications, postoperative neurologic deficits, and seizure rates. QoL was assessed using a modified questionnaire Short-Form 36 inventory. Forty patients (19 women and 21 men) met the inclusion criteria. Group A consisted of 26 patients (12 women and 14 men; median age 45.5 years ± 16.7 standard deviation) and had lower preoperative tumor volume (confounder) compared with group B (7 women and 7 men; age 50.0 ± 17.4 years). Gross total resection was achieved in 65% in group A and 71% in group B. Follow-up was 7.8 ± 3.9 years. New seizures/permanent neurologic deficits occurred in 27%/15% (group A) and 29%/29% (group B) and surgical complications in 23% of patients. Group B had a higher degree of memory impairment (21%) compared with group A (10%). QoL impairment was present in both groups mainly regarding physical role function and mental health index. Keeping in mind the limitations, transcallosal surgery was associated with a higher probability of neurologic deficits and memory impairment in our series. However, it had fewer surgical complications with similar gross total resection and seizure rates.

The minimally invasive transventricular endoscopic approach to third ventricular lesions in pediatric patients—all-rounder with limitations?

IntroductionThe surgical management of third ventricular lesions poses unique challenges, requiring careful consideration of various approaches and techniques. This study focuses on the transventricular transforaminal endoscopic approach and aims to provide insights into its indications, limitations, technical nuances, and potential complications in pediatric patients.MethodsA retrospective analysis was conducted using data from a 13-year period on pediatric patients who were subjected to transforaminal endoscopic surgery for third ventricular lesions. The study utilized a prospectively maintained internal database, extracting demographic data, preoperative assessment, surgical details, and postoperative follow-up information. The surgical technique is presented in detail, and exemplary case reports highlight relevant surgical considerations.ResultsOut of 578 endoscopic transforaminal procedures, 24 surgeries were performed on pediatric patients with third ventricular lesions. Performed procedures consisted of cyst resection (13 cases), solid tumor resection (4 cases), and tumor biopsies with CSF pathway restoration (7 cases). The mean age at the time of surgery was 7.6 years. Postoperatively, 14 patients showed transient nausea and vomiting (58.3%); 10 patients showed pneumocephalus on postoperative MRI (41.7%). No emergency postoperative re-interventions nor perioperative mortality were observed.ConclusionThe endoscopic transventricular transforaminal approach is a safe approach for lesion resection, CSF pathway restoration, and tumor biopsy in pediatric patients with third ventricle lesions. The author’s results support the use of this minimally invasive technique as an alternative to more extensive approaches, particularly to the interforniceal interhemispheric approach. However, surgical success is highly dependent to the individual surgeon’s experience and moreover to a suitable indication setting. Careful preoperative planning and knowledge of the approaches’ pro and cons is mandatory for successful application of this approach.

Endoscopic endonasal approach to remove pediatric intraventricular tumors of the third ventricle.

Pediatric intraventricular tumors of the third ventricle are among the most difficult-to-treat brain tumors. Recently, endonasal endoscopic surgery for suprasellar, third ventricle, and median clivus lesions has become the common procedure, and its indications are expanding to pediatric cases. We describe our strategy for endonasal endoscopic surgery for pediatric third ventricle tumors. We report on surgical anatomies and our surgical procedures in detail, including case presentations. Endoscopic endonasal surgery has the advantage of providing a wider view of the tumor site, hypothalamus, optic chiasm, and other critical structures. Good indications for the endoscopic endonasal approach for intra-third ventricular tumors are those arising from the floor of the third ventricle. In particular, craniopharyngioma, a typical pediatric suprasellar tumor, sometimes extends into the third ventricle, causing great operative difficulty. However, aggressive removal for long-term control while preserving memory and visual function is important. We perform surgery with a strategy of radically removing tumors without causing damage to visual or brain function, and we adopt the "4-hands technique by two neurosurgeons" in full endoscopic surgery to remove tumors safely and aggressively. We describe our strategy for endonasal endoscopic surgery for pediatric third ventricle tumors, especially those extending from the suprasellar region into the third ventricle, and present a representative case.

Endoscopic resection of a giant colloid cyst in the velum interpositum: illustrative case.

Colloid cysts are an unusual differential diagnosis for lesions in the lateral ventricles. Microsurgery is usually recommended for the treatment of giant colloid cysts. This case is the largest reported colloid cyst in this unusual location treated with an endoscope. A 39-year-old woman with a history of pulsing headaches presented with nausea, vomiting, vision blurring, and paresthesia of the left leg. On the brain computed tomography, a huge, well-defined homogeneous hyperdense intraventricular lesion with hydrocephalus was observed. Magnetic resonance imaging showed a spherical lesion over the third ventricle inside the lateral ventricles, obstructing the Sylvius aqueduct. There was no enhancement and no diffusion restriction on diffusion-weighted images. Endoscopic third ventriculostomy was undertaken for hydrocephalus treatment. Then the lesion was resected grossly. The cyst wall was resected as much as it was safe. There was no clot or bloody product inside the lesion. Colloid cyst is rarely encountered in the velum interpositum and lateral ventricles, but the authors' giant colloid cyst case along with similar cases led to considering it out of the third ventricle. According to their experience, endoscopic removal is a safe and efficient method for colloid cyst surgery, even in giant cases.

Radicality of lateral ventricular neoplasms removal and risk factors of postoperative hemorrhagic complications

Introduction. Lateral ventricular neoplasms (tumors, vascular neoplasms, cysts) are rare and according to different sources comprise between 0.64 and 3.5 % of all brain tumors. Due to relatively slow growth, tumors can reach significant size before patient develops neurological symptoms. Surgery is the main method of treatment of lateral ventricular neoplasms, and in many cases radical removal can be achieved. The main complications after surgery are hydrocephalus and hemorrhages. The later frequently lead to escalation of neurological symptoms and sometimes require repeat surgical intervention. The success of intraventricular surgery consists of reasonable radicality and absence of complications.Aims. To evaluate the radicality and safety of lateral ventricular tumor removal through traditional approaches–transcallosal and transcortical – using arterial spin labeling (ASL perfusion) and to analyze the risk of hemorrhagic complications in the early postoperative period in the context of tumor location and blood supply.Materials and methods. At the N.N. Burdenko National Medical Research Center of Neurosurgery between 2017 and 2019 48 patients with space‑occupying lesions of the lateral ventricles were examined and treated with surgery. All patients were examined using the same MRI protocol before and after surgery: Т1‑weighted, Т1‑weighed contrast‑enhanced, 3D SPGR, Т2‑weighted, Т2‑FLAIR, DWI, T2‑FLAIR CUBE, SWAN, ASL perfusion. In 28 (58 %) cases, transcortical approach was used (through the frontal lobe in 24 cases, through the upper temporal lobe in 2 cases, through the parietal lobe in 2 cases); transcallosal approach was used in 16 (33 %) cases; combination approach (for advanced tumors of the lateral ventricles) was used in 3 (6 %) cases; supracerebellar infratentorial approach was used in 1 (2 %) case. Radicality of lateral ventricular tumor removal and risk factors for postoperative hemorrhagic complications using different approaches were evaluated based on the following parameters: tumor volume and location, sex, blood flow characteristics, presence of hydrocephalus.Results. In the compared groups I and II, similar rates of radical tumor removal were observed: 63 % for transcortical approach and 71 % for transcallosal approach. Hematomas in the tumor bed were more frequently observed in patients operated through transcortical approach (64 % vs. 31 % in transcallosal) without statistical significance. Generally, there were no statistically significant differences between surgical treatment results in groups I and II (p &gt;0.05); this conclusion was confirmed in pseudo‑randomized patient subgroups selected through propensity score matching. Analysis of the association between hematoma in the postoperative period and baseline blood flow level showed that in the group with such hematomas mean tumor blood flow prior to surgery was almost twice as high as in the group without hemorrhagic complications after resection (80.6 vs. 49.4 ml/100 g/min, respectively).The following postoperative parameters are statistically significant for development of hematoma in the tumor bed: presence of hydrocephalus, Evans index in the early postoperative period.Conclusions. Correct and adequate choice of surgical approach considering anatomical location and advancement of the tumor, presence of hydrocephalus and surgeon’s preferences ensures high radicality of removal. Factors affecting the risk of hemorrhagic complications in the early postoperative period should be taken into account: sex, presence of hydrocephalus, neoplasm location and blood flow level.

358 A POSSIBLE RARE CASE OF VENTRICULAR LIPOMATOSIS: A STIMULUS FOR A PANORAMA OF FATTY CARDIAC LESIONS

Abstract We exhibit the case of a 75 years-old man who undertook cardio-oncological assessment for Non-Hodgkin Lymphoma: baseline echo revealed typical features of lipomatous hypertrophy of the interatrial septum (LHIS) and an apical hypoechoic left ventricle (LV) lesion. Five years before, the patient performed MRI (Magnetic Resonance Imaging), which confirmed LHIS, but superabundant epicardial fat extended to the right ventricle and the apical junction between the two ventricles, both characterized by normal ejection fraction, and surrounded the origin of the pulmonary trunk. LV lateral and inferior walls presented lipomatous metaplasia foci and no history or ECG sign of previous myocardial injury could be pointed out. A slight band of late gadolinium enhancement at the basal infero-lateral wall of LV was highlighted. The patient referred episodes of fainting: the Holter-ECG showed pronounced bradycardia which couldn't be explained by other secondary causes. So a bicameral pace-maker was implanted. During our ambulatory evaluation, we decided to repeat MRI, which showed no difference in comparison with the previous one, so excluding malignant degeneration of the fatty mass surrounding the heart. Despite older age and the lack of sudden cardiac death family history we searched for pathognomonic arrhythmogenic cardiomyopathy (ACM) mutations. In consideration of the new evidence of the metabolic risk associated with abundant epicardial fat (EF) we asked for updated laboratory dosage of plasma glucose, LDL cholesterol and triglycerides and we recommended stricter control of blood pressure. From 4% to 52% of cardiac mass is made up of fat but only EF interacts with myocardium and coronary arteries. Anomalous growth of fat in the heart can present itself as LHIS, excessive lipomatous infiltration or cardiac lipomas (real capsulated tumors) but also ACM is histologically characterized by fibrofatty replacement of cardiomyocites. Overabundant and inflammed EF is now considered a surrogate of metabolic risk and is associated with multivessel coronary disease, the finding of chronic total occlusions (CTO) and microvascular angina. Identifying fatty heart lesions and defining their clinical and prognostic role remains an intriguing challenge. We suggest a general binary way to follow: the “mechanic one” for lipomas or lipomatous infiltration, that is paying attention to compression phenomena or the generation of arrhythmias, and the “metabolic one”, in other words optimizing cardiovascular prevention when EF is too much. A careful research of imaging features of ACM can't be omitted.

Cardiovascular surgery in very low birth weight (≤ 1500g) neonates.

Low birth weight and prematurity are known risks of increased morbidity and mortality with undergoing cardiovascular surgery. Our aim was to review the outcomes of very low birth weight (≤ 1500 g) patients who have undergone cardiovascular surgery. A retrospective review was performed for 32 very low birth weight (≤ 1500 g) patients who underwent cardiovascular surgery from 2004 to 2021 in our institution. Fifteen patients weighting ≤ 1500 g at surgery (≤ 1500 g group) were compared to 17 patients born with a weigh ≤ 1500 g and weighting between 1500 g and 2500 g at surgery (>1500 g to ≤ 2500 g group) in this study. In-hospital mortality was 33% (5/15) in ≤ 1500 g group and 24% (4/17) in > 1500 g to ≤ 2500 g group (p = 0.55). All patients with simple biventricular lesion survived following full repair. The occurrence of postoperative intracerebral haemorrhage was significantly higher in those operated at weight ≤ 1500 g than those weighting >1500 g to ≤ 2500 g (40% vs 0%; p = 0.01). The 1- and 3-year survival rates were 66.0 ± 12.4% and 46.2 ± 14.8% in ≤ 1500 g group and 76.5 ± 10.3% and 70.6 ± 11.1% in > 1500 g to ≤ 2500 g group (Log-rank p = 0.12). Cardiac surgery for very low birth weight neonate resulted in a high early and late mortality. Early surgery is only acceptable for simple biventricular lesion if needed. Delayed surgery seems to provide better long-term outcomes in patients with complex lesions. Alternative strategies to neonatal cardiopulmonary bypass should be investigated in patients with complex biventricular and single ventricle lesions.