Cases Of Paralysis Research Articles

Further investigation of the lateral approach for the resection of Knosp grade 4 pituitary adenomas in endoscopic endonasal surgery.

The authors performed a further in-depth study of the lateral compartment of the cavernous sinus (LCCS) by the endoscopic endonasal approach to improve the safety and efficacy of the lateral approach for the removal of Knosp grade 4 pituitary adenomas (KG4PAs). Twenty-three cadaveric specimens were used for endoscopic endonasal dissection, and the LCCS was exposed to observe the neurovascular and fibrous structures within. A subclassification of the lateral approach based on further knowledge of the LCCS was proposed and used to resect 86 KG4PAs, and the surgical outcomes of these cases were reviewed. Type A KG4PAs represent tumor that was mainly distributed in the posterosuperior and superolateral compartments, type B KG4PAs represent tumor that was mainly distributed in the anteroinferior compartments, and type AB KG4PAs represent tumor that extended into each compartment with characteristics of types 4A and 4B. The authors identified multiple fibers that anchored the horizontal segment of the internal carotid artery (ICA) to the abducens nerve. The fibers, the sympathetic nerve, and the inferior lateral trunk form a partition-like structure in the LCCS named the abducens nerve-ICA complex (AIC), and the LCCS can be divided into the superolateral and inferolateral compartments by the AIC. Accordingly, the lateral approach was subclassified into the lateral superior (LS) approach and the anterior inferior (AI) approach. The LS approach was mainly used to resect type A KG4PAs, whereas the AI approach was used to resect type B KG4PAs, and a combination of the two was used to resect type AB KG4PAs. The gross-total, subtotal, and partial resection rates were 81.4%, 12.8%, and 5.8%, respectively. The numbers of cases of postoperative transient cranial nerve palsy, postoperative permanent cranial nerve palsy, ICA injury, and CSF leakage were 6 (6.9%), 2 (2.3%), 1 (1.2%), and 1 (1.2%), respectively. This study revealed that the LCCS is divided by the AIC into the superolateral and inferolateral compartments, avoiding the misconception that the LCCS has vertical communication. Therefore, the lateral approach was subclassified into the LS approach and the AI approach for the resection of KG4PAs, which allowed a high gross-total resection rate with acceptable safety in the surgical treatment of KG4PAs.

Perinatal Stroke as It is: Updates, Insights and Challenges

Perinatal stroke comprises a heterogeneous group of focal cerebrovascular injuries that occur between 20 weeks of gestation and 28 days of postnatal life. Perinatal stroke is a leading cause of life-long disability, causing most cases of hemiparetic cerebral palsy. The intent of this article was to provide a comprehensive review of the 6 different types of perinatal stroke based on neuroimaging and clinical presentation, highlighting their similarities and distinctions in etiology and outcome, and further discuss a neuroimaging pathway for suspected perinatal stroke and follow-up imaging.Learning Objective: To provide an update on the current knowledge of the role of neuroimaging in diagnosis and long-term prognosis of perinatal stroke diseases and to understand the microglial role in perinatal arterial stroke

Vocal Fold Paralysis After Spinal and Epidural Anesthesia: A Case Report and Scoping Review.

Cranial nerve paralysis is a rare complication of spinal and epidural anesthesia, and some cases of vocal fold paralysis (VFP) have been reported. The aim of this article is to report a case, identify evidence supporting the possibility of VFP being a complication of spinal and epidural anesthesia and to investigate the frequency, the characteristics, and the possible mechanisms of such a complication. CINAHL Complete, Google Scholar, Cochrane Library, Pubmed, and EMBASE. Case report according to CARE guidelines; scoping review according to PRISMA-ScR criteria. All types of studies that reported on patients of any age and sex, all types of spinal/epidural anesthesia regardless of the location and of drugs used were included. A data extraction sheet was completed for each study selected for inclusion based on the full-text screenings. Extracted data included: study characteristics, participant characteristics, intervention characteristics, outcome measures, clinical investigations. The study did not receive external funding. Eight studies met inclusion criteria and a total of 13 events (in 12 patients, including ours) were reported to date. Although there are some hypotheses in regard to the mechanism underlying the phenomena, including mechanical and inflammatory ones, the exact cause is still unclear. Only few cases of VFP after spinal or epidural anesthesia have been reported to date; however, it seems possible that VFP might be a potential underreported complication of such procedures. We believe that more research on the topic is warranted, especially considering the wide population potentially at risk. NA Laryngoscope, 134:3477-3484, 2024.

Effect of Ankle Distortion Taping on Balance, Gait, Function, Spasticity and Quality of Life in Cerebral Palsy Cases with Varus Deformity: A Randomized Controlled Trial

Purpose: The aim of the study was to investigate the effect of ankle distortion taping on balance, gait, function, spasticity and quality of life in cerebral palsy cases with varus deformity.
 Methods: A two-armed randomized controlled trial was carried out in rehabilitation center. A total of 32 children with CP were randomized into taping (TG) and conventional therapy group (CG). The children in the TG group were given distortion taping for 3 days in addition to CG. Participants were assessed before the treatment, in the immediate period after the first session, and in the acute period after the third session. The Timed Up and Go Test (TUG), Single Leg Stance Test (SLST), Modified Ashworth Scale (MAS), Wisconsin Gait Scale (WGS), and Child Health Questionnaire (CHQ) were used to evaluate clinical data.
 Results: The mean ages of the children in CG and TG were 9.62±2.50 and 10.0±1.63, respectively. Plantar flexor muscle spasticity decreased significantly in individuals with TG (p=0.0001). TUG and SLST scores improved significantly in the TG group (p=0.0001). There was a statistically significant difference in both in and between-group evaluations of WGS (p0.05).
 Conclusion: The results showed the effectiveness of distortion taping in reducing the spasticity of ankle plantar flexor muscles and improving function, balance and gait. However, taping was not superior to conventional rehabilitation.

Incidence of Nerve Palsies During Pavlik Harness Treatment for Developmental Dysplasia of the Hip: A Retrospective Cohort Study.

The Pavlik harness has been used for approximately a century to treat developmental dysplasia of the hip (DDH). Femoral nerve palsy is a documented complication of Pavlik harness use, with an incidence ranging from 2.5% to 11.2%. Rare reports of brachial plexus palsy have also been documented. The primary purpose of the current study was to evaluate the incidence of various nerve palsies in patients undergoing Pavlik harness treatment for DDH. Secondary aims were to identify patient demographic or hip characteristics associated with nerve palsy. We performed a retrospective review of patients diagnosed with DDH and treated with a Pavlik harness from February 1, 2016, to April 1, 2023, at a single tertiary care orthopaedic hospital. Hip laterality, use of a subsequent rigid abduction orthosis, birth order, breech positioning, weight, and family history were collected. The median (and interquartile range [IQR]) or mean (and standard deviation [SD]) were reported for all continuous variables. Independent 2-sample t tests and Mann-Whitney U tests were conducted to identify associations between the variables collected at the initiation of Pavlik harness treatment and the occurrence of nerve palsy. Three hundred and fifty-one patients (547 hips) were included. Twenty-two cases of femoral nerve palsy (4% of all treated hips), 1 case of inferior gluteal nerve palsy (0.18%), and 2 cases of brachial plexus palsy (0.37%) were diagnosed. Patients with nerve palsy had more severe DDH as measured by the Graf classification (p < 0.001) and more severe DDH as measured on physical examination via the Barlow and Ortolani maneuvers (p = 0.003). Nerve palsies were associated with more severe DDH at the initiation of Pavlik harness use. Upper and lower-extremity neurological status should be scrutinized at initiation and throughout treatment to assess for nerve palsies. The potential for femoral, gluteal, and brachial plexus palsies should be included in the discussion of risks at the beginning of treatment. Families may be reassured that nerve palsies associated with Pavlik harness can be expected to resolve with a short break from treatment. Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Global developmental delay in a child with asphyxia neonatorum: Why search for an additional explanation?

Children presenting neurological problems and a history of “not cried immediately at birth” are labeled to have cerebral palsy due to birth asphyxia. Although this may be true in many situations, the presence of some additional features may help determine an alternate diagnosis. We present such a case with an alternate diagnosis. A child with a history of birth asphyxia was labeled as a case of global developmental delay or a case of cerebral palsy by the treating doctors. However, the child had certain dysmorphic features such as bulbous nose, depressed nasal bridge, low-set ears, high-arched palate, squint, and flat feet. The child was initially treated in the Neonatal Intensive Care Unit after birth. Later, she developed various neurological features, with frequent episodes of aspiration pneumonia and seizures which were managed with anticonvulsant drugs and antimicrobial agents. She also had some additional non-specific features. On detailed evaluation, the child was diagnosed to have 1q43q44 microdeletion. Search for an alternate or additional diagnosis should be carried out if a child presenting with global developmental delay has some additional syndromic features. This will help in the prognostication of child and help parents in future pregnancy.

The Polio Vaccination Status of Non-polio Acute Flaccid Paralysis Cases in the Far North Region of Cameroon: A Five-Year Retrospective Study From 2015 to 2019.

The Expanded Program on Immunization (EPI) of Cameroon contributes to the reduction of polio, but the rate of non-polio acute flaccid paralysis (NPAFP) is still high. The aim of this study was to describe the immunization profile ofNPAFP cases and the performance of polio surveillance in the Far North Region of Cameroon between 2015 and 2019. A retrospective secondary data analysis was conducted using the national EPI and regional AFP surveillance case-based database from 2015 to 2019. Analyses were carried out using Epi-Info statistical software (version 7) (Centers for Disease Control and Prevention, Atlanta, GA). The surveillance network of the region reported 848 cases of NPAFPbetween 2015 and 2019. The sex distribution of the AFP cases revealed that 43.3% were females and 56.7% were males. Cases with AFP aged less than five years accounted for the largest proportion of cases (67.2%). Overall, 733/848 (86.4%) of the AFP cases received at least three doses of the oral polio vaccine (OPV). The AFP detection rate substantially increased in the region after the introduction of community-based surveillance in 2016. The mean NPAFP level during the study period was 7.3/100,000 children aged less than 15 years. The mean proportion of AFP cases with two adequate stools was 668/848 (78.7%), and the mean proportion of stools to the national reference laboratory within three days was 466/848 (54.9%). Only 86.4% of AFP cases received three or more doses of OPV required for immunization. The stool specimen management indices were not good enough to confirm that no case of poliovirus was missed in the laboratory. To strengthen the country's polio-free status, surveillance should be strengthened in least-performing health districts to improve the quality of AFP case investigations after detection.

Effective partnership and in-country resource mobilization in Sudan for cVDPV2 outbreak response amid multiple emergencies in 2020-2021.

During 2020 and immediately prior to the COVID-19 pandemic, Sudan was experiencing multiple emergencies including violence, seasonal flooding, and vector-borne disease outbreaks. After more than ten years since its last case of wild poliovirus, Sudan declared a circulating vaccine-derived poliovirus type 2 (cVDPV2) outbreak on 9 August 2020. cVDPV2 outbreak response data and programme documents of the Federal Ministry of Health and WHO were reviewed. Surveillance data was verified through WHO-recommended procedures for detecting and characterizing polioviruses from stool and sewage samples collected from acute flaccid paralysis (AFP) cases and the environment. This outbreak in Sudan led to a total of 58 confirmed cases of cVDPV2 from 15 of the 18 states. Two nationwide vaccination campaigns were held to increase immunity of children under-five against poliovirus type 2. Funding challenges were overcome by intense additional resource mobilization from in-country sources. The funding gap was bridged from domestic resources (49%) sourced through GPEI partners, and in-country humanitarian funding mechanisms. During an outbreak response and challenge of funding shortfall, mobilizing in-country resources is possible through coordinated approaches, regular communication with partners, disaggregation of needs, and matching in-kind and financial support to fill gaps. A cVDPV2 outbreak requires a fast, resourced, and quality response to stop virus circulation.

Bifurcation of the Radial Nerve in the Arm as a Cause of Traumatic Partial Nerve Palsy: A Case Report

Purpose: To describe the case of a traumatic partial nerve palsy following an open crushing arm injury. The partial palsy was due to the presence of radial nerve bifurcation in the proximal arm. Methods: A 23-year-old male was involved in a motor vehicle accident, where his motorbike crushed against a steel road divider sustaining multiple injuries in the spine, thorax, and right arm. On clinical examination, the patient presented a deep, blunt trauma on the posterior aspect of the proximal arm and partial radial nerve palsy was diagnosed with preservation of the brachioradialis and the extensor radialis longus muscle function. Surgical exploration was carried out. Results: An extensible posterior approach to the arm was performed and two main radial nerve branches were found. The lateral, more sizeable nerve, had an epineural hematoma without any distal response during intraoperative stimulation. The medial, thinner nerve trunk was preserved and, when stimulated, elicited response from the brachioradialis. Conclusion: We describe an uncommon variation of the radial nerve which was associated with partial palsy following blunt force trauma. This anatomical variation should be kept in mind in cases like the one described.

A Case of Dengue Fever Presenting Hypokalaemic Paralysis - A Rare Manifestation of a Common Disease

A Case of Dengue Fever Presenting Hypokalaemic Paralysis - A Rare Manifestation of a Common Disease

Percutaneous Stylomastoid Foramen Pulsed Radiofrequency Combined with Steroid Injection for Treatment of Intractable Facial Paralysis After Herpes Zoster.

We investigated the safety and efficacy of percutaneous facial nerve pulsed radiofrequency combined with drug injection for treatment of intractable facial paralysis of herpes zoster. The authors provide a detailed description of percutaneous facial nerve pulsed radiofrequency combined with steroid injection for treatment of intractable facial paralysis after herpes zoster, and they examine its clinical efficacy. This is the first time in the literature to our knowledge that this procedure has been applied in facial paralysis after herpes zoster. A total of 43 patients with a history of facial paralysis after herpes zoster for > 1 month were enrolled in this retrospective study. The patients were subjected to percutaneous stylomastoid foramen pulsed radiofrequency of the facial nerve under computed tomography (CT) guidance combined with drug injection. The House-Brackmann grades and NRS (Numerical Rating Scale) data collection were performed at different time points (preoperatively, 1day post-procedure, and 2, 4, and 12weeks postoperatively). The occurrence of complications was also assessed. The 43 participants successfully completed the CT-guided percutaneous stylomastoid foramen pulsed radiofrequency of the facial nerve combined with drug injection. Both approaches [posterior approach of the ear (7 cases) and anterior approach of the ear (36 cases)] were efficacious and safe. The House-Brackmann grades (I, II, III, IV, V, VI) were 4 (3-4), 2 (2-3), 1 (1-2), and 1 (0-2) at different operation times (T0, T1, T2, T3, T4); patients felt significant recovery at T1 after operation and had gradually recovered at each time point but had no significant recovery after T3. The NRS scores at different operation times were 2.690 ± 2.213, 0.700 ± 0.939, 0.580 ± 1.006, 0.440 ± 0.908, and 0.260 ± 0.759, respectively. Differences in NRS scores between T0 and T1/2/3/4 were significant while differences between T1 and T2/3/4 were not significant. Six patients developed mild numbness, nine patients exhibited muscle tension, while one patient exhibited facial stiffness. During surgery, there was no intravascular injection of drugs, no nerve injury was reported, and there was no local anesthetic poisoning or spinal anesthesia. Percutaneous stylomastoid foramen pulsed radiofrequency combined with drug injection of the facial nerve for treatment of intractable facial paralysis after herpes zoster is a minimally invasive technique with high rates of success, safety, and effective outcomes. It is a potential therapeutic option for cases of facial paralysis of herpes zoster with a > 1 month history even for those with severe facial paralysis and whose treatment has failed after oral medication and physiotherapy.

Traumatic bilateral acetabular fracture secondary to high-energy trauma in healthy adults

BackgroundBilateral acetabular fracture is a very rare presentation among the trauma patients, as the pattern and the degree of the forces required to fracture both acetabula is very unique. The primary purpose of this study is to report a series of adult patients presenting with post-traumatic bilateral acetabular fracture without any history of pathological or metabolic bone disease.Patients and methodsIn this retrospective study, 18 cases of traumatic bilateral acetabular fracture were included. There was predominance of both column (four patients on left and six on right) followed by anterior column (two patients left and four on right) and posterior wall (three patients left and right). They were treated surgically through open reduction and internal fixation. All cases were followed up for at least 13 months. Matta’s criteria were used for radiological evaluation on plain radiographs. Functional outcome was evaluated using the Merle d’Aubigne and postel score at final follow-up.ResultsNo patients were lost during the follow-up period; there was one case of surgical site infection. There were three cases of postoperative osteoarthritis, one case of heterotrophic ossification, one case of persistent sciatic nerve palsy and one case of lateral femoral cutaneous nerve palsy. The radiological evaluation according to Matta’s criteria revealed anatomic reduction in 12 patients, imperfect reduction in three patients while other three patients had poor reduction. According to modified Merle d’Aubigne and Postel score, 10 cases were rated as excellent, five cases as good and three cases presented fair (one case) to poor (two cases) results.ConclusionWe report an unusual case series of bilateral acetabular fracture successfully managed surgically with good clinical outcome. With the increasing incidence of route traffic accidents, such cases would probably be recurrent in the upcoming years.

The Impact of the COVID-19 Pandemic on Bell's Palsy and Ramsay-Hunt Syndrome: A Multicenter Retrospective Study.

This article presents a comprehensive review of data on the impact of facial palsy during the coronavirus disease 2019 (COVID-19) pandemic. The possible causes and pathophysiological mechanisms of changes in the epidemiology of facial palsy during the COVID-19 pandemic are also discussed. This multicenter retrospective cohort study included 943 patients diagnosed with Bell's palsy or Ramsay Hunt syndrome. This study compared patient demographics, comorbidities, symptoms, and treatments before the COVID-19 pandemic (from 2017 to 2019) and during the COVID-19 pandemic, from 2020 to 2022). Following the COVID-19 outbreak, there has been a significant increase in the number of cases of Bell's palsy, particularly among elderly individuals with diabetes. Bell's palsy increased after the COVID-19 outbreak, rising from 75.3% in the pre-COVID-19 era to 83.6% after the COVID-19 outbreak. The complete recovery rate decreased from 88.2% to 73.9%, and the rate of recurrence increased from 2.9% to 7.5% in patients with Bell's palsy. Ramsay Hunt syndrome showed fewer changes in clinical outcomes. This study highlights the impact of the COVID-19 pandemic on the presentation and management of facial palsy, and suggests potential associations with COVID-19. Notably, the observed increase in Bell's palsy cases among elderly individuals with diabetes emphasizes the impact of the pandemic. Identifying the epidemiological changes in facial palsy during the COVID-19 pandemic has important implications for assessing its etiology and pathological mechanisms of facial palsy disease.

A rare case of phrenic nerve palsy after cervical spine surgery

Abstract Phrenic nerve palsy is a rare complication of cervical spine surgery. There are very few previously reported cases of unilateral diaphragmatic paralysis following posterior cervical spine surgery. We present a case of a 61-year-old man with cervical canal stenosis and myelopathy for which we performed C3–C6 laminectomy and lateral mass screw fixation. Postoperatively the patient developed right C5 palsy affecting his deltoid function which gradually improved. The patient developed respiratory distress postoperatively and was found to have an elevated hemidiaphragm secondary to phrenic nerve palsy. He was treated with respiratory support, with significant improvement in dyspnea. It is a very rare case of unilateral diaphragmatic paralysis causing dyspnea due to phrenic nerve palsy following cervical spine surgery. This rare complication should be kept in mind when assessing any patient with respiratory distress following cervical spine surgery.

Diabetes Mellitus and Hypertension are Associated with Bell's Palsy

Background: Bell's palsy occurs in approximately 40-70% of all cases of acute peripheral facial nerve paralysis, and its cause is unknown. Bell's palsy has several risk factors, including diabetes mellitus and hypertension. Objective: This study aims to identify the association between diabetes mellitus and hypertension with the occurrence of Bell's palsy. Methods: This research was conducted at RSUD Tugurejo Semarang in March 2022 using a retrospective study design and purposive sampling technique. Data collected included the history of diabetes mellitus, hypertension, and the occurrence of Bell's palsy. Medical records were used as research instruments. Hypothesis testing was performed using the Fischer exact test. Results: A total of 32 samples were included in this study. There were 11 patients (34.4%) with a history of diabetes mellitus, 21 patients (65.6%) with a history of hypertension, 11 patients experienced acute Bell's palsy (34.4%), and 21 patients had subacute Bell's palsy (65.6%). The statistical analysis showed a significant association between diabetes mellitus (p=0.017) and hypertension (p=0.033) with the occurrence of Bell's palsy. Conclusion: This study reveals a significant correlation between diabetes mellitus and hypertension and the occurrence of Bell's palsy. Several studies also suggest that hypertension is linked to a poorer prognosis in patients with comorbidities and facial paralysis in Bell's palsy. However, there are also studies stating that age and gender are associated with the occurrence of Bell's palsy independently of diabetes and hypertension.

Редкая причина одностороннего паралича гортани

A clinical case of unilateral paralysis of the larynx due to the Collet — Sicard Syndrome is described. A patient with hoarseness due to paresis of the left half of the larynx of unknown origin underwent a comprehensive examination: CT scan of the neck, chest, MRI of the brain, ultrasound examination of the brachiocephalic arteries, consultation with a neurologist. Paresis of the left half of the larynx, left deviation of the tongue and uvula to the right, paresis of the left trapezius and sternocleidomastoid muscle, a decrease in the volume of the left half of the tongue with single fasciculations were diagnosed. Symptoms of damage to the IX, X, XI, and XII cranial nerves on the left were revealed, which corresponds to the syndrome of damage to the nerves of the caudal group in the jugular foramen. The disease arose against the background of acute bronchopneumonia. Treatment and phonopedic rehabilitation were carried out. During therapy, a complete restoration of the vocal cord palsy and the disappearance of neurological symptoms were noted. Timely diagnosis and proper treatment of a patient with Collet — Sicard Syndrome demonstrates good functional results.

Bilateral vocal cord paralysis and airway obstruction during postoperative period after partial glossectomy

Bilateral vocal cord paralysis is a rare complication of endotracheal intubation, causing serious problems. We report a case of bilateral vocal cord paralysis and airway obstruction in the postoperative period after partial glossectomy. A 61-year-old male patient with diabetes mellitus underwent partial glossectomy under general anesthesia. The anesthesia during surgery was uneventful. After extubation, the patient appeared to have airway obstruction and complained of dyspnea. Flexible fiberoptic laryngoscopy was performed immediately, and the patient was diagnosed with bilateral vocal cord paralysis. Therefore, reintubation was performed. The patient was extubated the following day and discharged with incomplete recovery of vocal cord paralysis. The study findings indicate that inappropriate endotracheal tube location and cuff pressure can cause bilateral vocal cord paralysis. The involvement of head position and tongue traction during glossectomy was suggested in this case. Anesthesiologists should be able to consider and manage bilateral vocal cord paralysis in patients with airway obstruction in the postoperative period.

Prevalence and Mortality of Pediatrics with Guillain-Barré Syndrome during the COVID-19 Pandemic and Pre-COVID-19 Periods.

Based on case reports, researchers have observed the incidence and clinical manifestations of Guillain-Barré Syndrome (GBS) following COVID-19 infection. Current hypotheses suggest that the risk of GBS may increase with COVID-19, and worsening GBS could elevate the risk of infection and exposure to the virus. This study aimed to assess the cognitive epidemic and mortality of children under 15 years of age with GBS during the COVID-19 pandemic and to compare them to two years earlier without addressing the etiology. This cross-sectional study was conducted on all children admitted to Iranian hospitals with a diagnosis of GBS and whose clinical information was available in the national flaccid paralysis patient information registration system between April 2018 and April 2021. The total number of registered cases of GBS in the pre-COVID-19 period and during this period was 778 cases and 504 cases, respectively (total N=1282), indicating a decrease in registered GBS during COVID-19. The mean age of the patients in the pre-COVID-19 period was 9.00 ± 2.78 years, and during the COVID-19, it was 8.99 ± 2.03 years (P-value =0.998). No significant difference was found in gender distribution between the two periods (P-value =0.427). The total number of paralysis cases studied after 60 days was 14.3% before the COVID-19 period and 17.3% during the pandemic (P-value =0.216). The mortality rate in patients with GBS was 0.13% in the pre-COVID-19 period and 0.19% in the COVID-19 period (P-value =0.757). Despite the decline in the frequency of diagnosis and referrals of patients with GBS during the COVID-19 period, no difference was found in the demographic characteristics and clinical outcomes of children with GBS in the pre-COVID-19 period and during this pandemic.

Left Sixth Nerve Palsy and Subdural Hygroma Following Intrathecal Morphine Pump Placement: A Case Report

BACKGROUND: An intrathecal (IT) pump is an effective drug delivery system that assists patients with chronic pain management. However, due to the invasive nature of the procedure, a complication that could arise is cerebrospinal overdrainage or leak, which could lead to adverse effects. CASE REPORT: The patient underwent an IT morphine pump implant for treatment of his chronic, intractable low back pain. Following the procedure, he developed persistent headaches and diplopia and was found to have left lateral rectus palsy. Imaging studies showed the development of bilateral subdural hygromas. His condition was resolved with surgical intervention and time. CONCLUSIONS: After an extensive literature search and review, to our knowledge, this is the first reported case of sixth nerve palsy and subdural hygromas following the implant of a drug delivery system. KEY WORDS: Abducens palsy, IT pump, subdural hydrgomas, intrathecal drug delivery system, lateral rectus palsy

Abducens Nerve Palsy Caused by Cavernous Sinus Meningioma Mimicking Tolosa-Hunt Syndrome

Purpose: To report a case of abducens nerve palsy caused by cavernous sinus meningioma mimicking Tolosa-Hunt syndrome (THS).Case summary: A 59-year-female visited to the ophthalmic department for sudden onset of horizontal diplopia for 20 days. The extraocular examination showed 10 prism diopters (PD) esotropia at distant fixation and ortho at near fixation without definitive abduction limitation. At 2 months of follow-up, she showed the 25 PD left esotropia with abduction limitation of the left eye. The ocular pain and headache were newly developed. Magnetic resonance imaging (MRI) with contrast was performed and revealed the enlargement and enhancement of left cavernous sinus. THS was suspected and high dose steroid treatment was performed. The ocular findings and headache were improved after treatment. These symptoms showed waxing and waning with steroid tapering during follow-up. The follow-up MRI showed no definitive improvement of cavernous sinus lesion compared with previous study. The cavernous sinus meningioma was considered. There was no improvement of ocular motility findings during follow-up and the strabismus surgery was performed.Conclusions: The abducens nerve palsy with headache can occur caused by cavernous sinus meningioma. It may be difficult to differentiate it from THS in certain cases.