Iliac System Research Articles

An anatomical study on the variations and clinical significance of the corona mortis within a South African sample

IntroductionAnterior orthopaedic approaches, much like the Modified Stoppa approach, target fractures of the anterior column of the pelvis and acetabulum. The approach is described as a minimally invasive technique that may lead to iatrogenic haemorrhage and fatality in patients. Such mortality is due to the inadvertent severing of the corona mortis vessels, a clinical term referring to the anastomosis between the obturator vessels and the external iliac vessels typically via an accessory obturator vessel that courses over the pelvic brim. Knowledge regarding the prevalence and clinical significance of the corona mortis, especially within the South African population is lacking, and therefore further investigation of this anomaly is necessary. Materials and methodsThis study investigated the incidence and variations of the corona mortis vessels in a South African sample using 63 adult cadavers obtained from the Department of Anatomy, University of Pretoria. After careful dissection of the blood supply to the pelvis, the prevalence of corona mortis was investigated. Variations regarding the composition of the corona mortis and the incidence of aberrant obturator vessels were documented. ResultsThe incidence of corona mortis was observed in 67.5% of the study sample, with 91.6% being venous and 8.4% being arterial in composition. An incidence of 26.0% of aberrant obturator arteries and 8.1% of aberrant obturator veins were observed originating or draining directly into the external iliac system, respectively. A single rare instance of corona mortis was observed and involved an anastomosis with the superior vesical vein rather than the typical obturator vein. While variations amongst anomalous accessory vessels were observed which resulted in as many as 3 aberrant vessels coursing over the pelvic brim. No significant difference was concluded for the incidence of corona mortis between the left and right sides or between males and females. ConclusionMapping out the parameters of the corona mortis and examining the variation linked with the anomaly will aid orthopaedic surgeons in implementing anterior approaches with reduced vascular damage and iatrogenic deficit. Further understanding of its incidence in the South African population will in turn assist in interpreting its clinical significance.

Abstract 16128: The Winslow Pathway and Internal Mammary Artery Harvesting in Patients With Aortoiliac Occlusive Disease

Introduction We present a case where the left Internal Mammary Artery (IMA) was not a straightforward choice as the grafted vessel in a patient undergoing Coronary Artery Bypass Grafting (CABG). Case Presentation Patient was a 66 years old female with Hypertension, Hyperlipidemia, hypothyroidism, and tobacco use disorder. Evaluation for a motor vehicle accident secondary to a syncopal episode, and intermittent chest tightness over the past few months, showed ST depressions on ambulatory electrocardiographic monitoring, reversible ischemia in the anterior and apical walls on Exercise Stress Test and severe multivessel coronary artery disease involving the distal main left coronary artery and its branches on Coronary Angiography. CABG was advised. Preoperative peripheral angiogram showed bilateral common iliac artery occlusion, precluding IABP placement. Selective angiography of the left IMA showed the left IMA to be the major vessel supplying collateral circulation to the left iliac system. Patient subsequently underwent CABG with bilateral Saphenous Vein Harvest. Discussion IMA harvesting in patients with Aortoiliac Occlusive Disease (AOD) with prominent collaterals through the subclavian-IMA-inferior epigastric-external iliac pathway, AKA the Winslow Pathway (WP), can result in limb threatening ischemia, and elective IMA angiography and/or doppler flow evaluation before CABG can help identify this important collateral pathway. Alternative approaches in patients with AOD include simultaneous coronary and peripheral revascularization, completely avoiding IMA harvesting or in some cases, angioplasty, although there is no consensus thus far.

Obturator Vein and its Anatomical Variations in Cadavers: A Descriptive Study

Abstract Background: The obturator vein (OV) is formed in the proximal adductor region and traverses through the obturator foramen to terminate in the internal iliac vein (IIV). It is occasionally replaced by an enlarged pubic vein that terminates into the external iliac vein (EIV) forming a venous corona mortis. These variant OVs are liable to injury during surgical interventions near the pubic bone. The present study aimed to report the prevalence of variant as well as duplicated OVs in Indian cadavers. Methodology: The present descriptive study included 25 adult human cadavers and 11 hemi-pelves. The specimens with variant OVs were identified and followed to their termination into the internal or external iliac system. The external diameter of variant OVs and their distance from the symphysis pubis were recorded. Results: Variant OVs were observed in 34.42%. Most of the variant veins crossed over the pubic ramus. In 21.31%, duplicated OVs were observed, which drained separately into the internal iliac as well as the EIV, or the IIV as a common trunk. The average diameter of the variant OVs on the superior pubic ramus was 4.12 ± 1.2 mm. The average distance between the pubic symphysis and the variant OVs on the superior pubic ramus was 45.28 ± 7.65 mm. Conclusion: The present study appreciates the variant anatomy of the OV and its relation to the superior pubic ramus. Understanding these variations will help avoid the risk of injury and hemorrhage in pelvis surgeries as well as endoscopic procedures.

Global Iliac Branch Study: Image-based Detailed Anatomic Assessment and Device Performance

Iliac branch devices are designed to preserve patency of the internal iliac artery for endovascular repair of aortoiliac aneurysms. The Global Iliac Branch Study (NCT05607277) is an international, multicenter, retrospective study of over 300 iliac branch devices with diverse use. The objective of this project was to evaluate potential anatomic determinants of adverse iliac events. Patients were included if they had both pre- and post-treatment computed tomography imaging available after implantation of a bifurcated device. Morphologic measurements included arterial diameters, stenosis, calcification, aortic and iliac bifurcation angles, and tortuosity indices (Fig), performed by a core laboratory with a standardized and validated protocol. Adverse iliac events were defined as type I or III endoleak, occlusion, device constriction (due to either narrow anatomy or another component), or clinical events requiring reintervention of the ipsilateral iliac branch system. This abstract is based on univariate analysis. Paired t test was used to compare tortuosity indices and splay angles pre- and post-treatment. Logistic regression was used to assess associations between anatomic measurements and adverse iliac events. Analysis was performed by iliac system (ie, bilaterally treated patients’ right and left sides were analyzed independently). We analyzed 297 subjects (286 males, 11 females) with 331 iliac branch devices (104 nitinol, 227 stainless steel). Mean clinical follow-up was 3.8 years. Mean baseline total iliac artery index was 1.47 (range, 1.44 to 1.50), mean baseline common iliac artery index was 1.10 (range, 1.09 to 1.12). Changes in iliac artery tortuosity indices and aortic and iliac splay angles are reported in Table. Anatomy is significantly straightened with treatment in all devices. There were 54 adverse iliac events in 44 systems, requiring 35 reinterventions (median time to reintervention, 41 days; range, 0 days to 6.2 years). There were 18 endoleaks (17 type I, 1 type III), 29 occlusions, and five device constrictions. In nitinol devices, diameter of the internal iliac landing zone <10 mm and non-conformability (reduction in total iliac index beyond 15%) were associated with adverse iliac events (odds ratio [OR], 14; P = .016 and OR, 7.8; P = .021, respectively.) In the stainless steel devices, no significant univariate associations were found with anatomic measurements. These results suggest that purpose-built iliac branch devices are highly efficacious in treating tortuous iliac anatomy, with a high patency rate and low reintervention rate. Some anatomic factors are strongly predictive of adverse iliac events in nitinol devices.TableChanges in iliac artery tortuosity indices and splay anglesPre-treatment [95% CI]Post-treatment [95% CI]P-valueAll iliac branch systems (n = 331) Total iliac artery index1.47 [1.44-1.50]1.31 [1.28-1.33]<.0001 Common iliac artery index1.10 [1.09-1.12]1.04 [1.03-1.04]<.0001 Aortic splay angle58.3 [56.2-60.5]41.4 [39.6-43.1]<.0001 Iliac branch splay angle52.3 [49.7-54.8]47.4 [45.3-49.6]<.0001Nitinol iliac branch systems (n = 104) Total iliac artery index1.53 [1.47-1.60]1.44 [1.38-1.50]<.0001 Common iliac artery index1.13 [1.10-1.16]1.06 [1.05-1.08]<.0001 Aortic splay angle56.4 [52.1-60.8]45.3 [42.3-48.3]<.0001 Iliac branch splay angle48.0 [43.5-52.5]44.5 [40.7-48.3].0633Stainless steel iliac branch systems (n = 227) Total iliac artery index1.44 [1.42-1.47]1.25 [1.23-1.26]<.0001 Common iliac artery index1.09 [1.07-1.10]1.03 [1.02-1.03]<.0001 Aortic splay angle59.2 [56.8-61.7]39.6 [37.5-41.7]<.0001 Iliac branch splay angle54.2 [51.1-57.3]48.8 [46.2-51.4]<.0001CI, Confidence interval. Open table in a new tab

“VARIANT ANATOMY OF THE ILIAC VENOUS SYSTEM: A STUDY LINKED WITH LAPAROSCOPIC HERNIA REDUCTION AND PELVIC SURGERIES”

Background: Haemorrhage, whether retroperitoneal or intraperitoneal, is one of the most unwanted complications in any laparoscopic hernia reduction surgery or pelvic surgery, thus making variant anatomy of iliac venous system important as intraoperative injury to these venous channels can be one of its major causes. To study the existing communications betwe Aims and objectives: en the external and internal iliac venous system and perform its morphometric analysis. 24 formalin xed human hemi pelvises were di Material and Methods: ssected, internal (IIV) and external iliac veins (EIV) along with their tributaries were identied. Major venous anomalous communications were noted and measured accordingly. Results: 33.33% of all the observed pelvic halves had major anomalous venous communications between EIV and IIV. Knowledge Conclusion: anatomy of the pelvic venous system is vital to a surgeon especially in laparoscopic surgeries and even in the post-operative outcome of the patient.

Major vascular reconstruction in colorectal adenocarcinoma and retroperitoneal sarcoma: A retrospective study of safety and margins in a tertiary referral centre

BackgroundThe role of en bloc vascular resection and reconstruction (EVRR) is controversial in colorectal adenocarcinoma (CRC), but well-established in retroperitoneal sarcoma (RPS). Sparse data exists regarding these complex procedures. MethodsPatients undergoing curative intent EVRR for advanced CRC and RPS between 2014 and 2021 at a tertiary centre were included. Morbidity, margins, recurrence, and survival were evaluated. Results24 patients underwent EVRR with 48 reconstructions (11 CRC and 13 RPS). For CRC, 100% of patients underwent Iliac system reconstructions. For RPS, inferior vena cava reconstructions were the most common (69.2%). There were 2 arterial and 1 venous graft thromboses. Primary graft patency was 89.4% arterial and 93.1% venous, while secondary patency was 100% arterial and 96.5% venous at last follow up. 1 venous and 1 arterial graft required reoperation for bleeding. There were no compromised limbs. Major complications occurred in 6 patients (25.0%) with no observed difference between CRC and RPS (OR 0.43 95%CI[0.60,3.19], P = 0.41). R1 margins occurred 1 CRC (90.9%) and 3 RPS (76.9%), with no R2 resections. All vascular resection margins were clear. There were 6 CRC (50%) and 4 RPS (33.3%) recurrences. Median recurrence time was 20.9 months for CRC and ‘not yet reached’ for RPS. Median follow-up was 19.4 months for CRC and 21.4 months for RPS. ConclusionEVRR for locally advanced CRC or RPS is safe and achieves favorable R0 resection rates. CRC patients with major vascular invasion can still be considered for curative intent surgery. Larger cohorts with longer follow up are needed to assess oncologic outcomes.

Gluteal And Thigh Compartment Syndrome After Open Abdominal Aortic Aneurysm Repair

A 55-year-old male underwent elective aorto-bi-iliac bypass for asymptomatic abdominal aortic aneurysm (AAA) and left common iliac artery (LCIA) ectasia. Intraoperative assessment of the left foot revealed persistent ischemia after reperfusion, and this was thought to be related to a dissection flap or technical issue at the left limb anastomosis. To address this, a jump bypass to the left internal iliac and left common femoral artery was performed, requiring re-clamping of the left iliac system.

Endovascular Therapy of Chronic Iliofemoral Venous Outflow Obstructions

Deep vein thrombosis (DVT) is associated with a high cost burden for health care systems because of secondary cost intensive complications like pulmonary embolism and especially the post thrombotic syndrome (PTS). Current standard therapy of anticoagulation for DVT therapy has not changed through the years leaving patients especially with iliofemoral vein thrombus on a high-risk situation for developing PTS. For patients with chronic venous outflow obstruction of the iliac vein system dedicated venous stents and recanalization techniques are today available.

Aortic Endarterectomy in Severe Multivessel Paravisceral and Limited Aortoiliac Occlusive Disease: A Lost Art with a Place in Modern Surgery

Historically the treatment of choice for aortoiliac occlusive disease, aortic endarterectomy (AE) is now rarely performed. However, in patients with severe multivessel atherosclerotic disease of the paravisceral aorta, and with severe disease limited to the infrarenal aortoiliac segment, AE provides an opportunity to restore in-line flow, either as a primary procedure or as a salvage procedure after prior endovascular attempts at revascularization have failed. We evaluated outcomes for patients at a single institution undergoing AE for disease involving multiple visceral vessels, or involving the infrarenal aorta and the iliac system.

A Multicenter Assessment of Anatomic Suitability for Iliac Branched Devices in Eastern Asian Patients With Unilateral and Bilateral Aortoiliac Aneurysms.

Objective: This study aims to assess the suitability of four types of commercial iliac branch device systems to treat Eastern Asian abdominal aortic aneurysm (AAA) patients with bilateral or unilateral common iliac artery aneurysms (CIAAs).Methods: Patients with a coexisting AAA and a unilateral or bilateral CIAAs who underwent endovascular aneurysm repair (EVAR) at two tertiary centers in China from 2015 to 2017 were reviewed. Morphology of lesions was measured and the anatomic suitability for Cook iliac branch device (IBD), Gore iliac branch endoprosthesis (IBE), Lifetech iliac branch stent graft (IBSG), and Jotec IBD was evaluated according to the latest instructions for use.Results: Seventy-six patients with AAA were enrolled, including 35 bilateral CIAAs, 41 unilateral CIAAs. A hundred and eleven lesions were investigated aggregately: 16.2, 28.8, 21.6, and 19.8% met the criteria for Cook IBD, Gore IBE, Lifetech IBSG, and Jotec IBD, respectively. A total of 34 (44.7%) patients could be treated for at least one lateral lesion. The diameter of the internal iliac artery (IIA) was the most common restriction for IBD application. Additionally, the IIA diameter of lesions in the bilateral group was significantly larger compared with the unilateral group (P < 0.001). Based on the anatomical characteristics alone, it is likely that IBDs will be more suitable for unilateral lesions than bilateral ones (P < 0.05). However, there was no difference between the suitability for patients with unilateral or bilateral CIAAs (P > 0.05).Conclusions: Less than half of Eastern Asian patients with aortoiliac aneurysms were eligible for IBD application. This was primarily due to the IIA diameter failing to meet the criteria. And thus, the suitability of lesions in bilateral group was significantly lower than that in the unilateral group. Aiming to expand the indications and optimize the design of the iliac branch devices, IIA diameter and the anatomical characteristics of the bilateral lesions should be considered deliberately.

Corona mortis, aberrant obturator vessels, accessory obturator vessels: clinical applications in gynaecology

Corona mortis (CMOR) is a heterogeneous and often dubious term that causes much confusion in medical literature, especially in regard to its modern day significance in pelvic surgery. Some authors define CMOR as any abnormal anastomotic vessel between the external iliac and obturator vessels, whereas others define it as any vessel coursing over the superior pubic branch, regardless whether it is a vascular anastomosis, an accessory obturator vessels, an obturator vessel related to the external iliac system or a terminal small vessel. There is no standard classification of CMOR and obturator vessels variations, although there are multitudes of classifications describing the diverse variations in the obturator foramen region. We define accessory obturator, aberrant obturator vessels and CMOR as different structures, as CMOR is an anatomical term that reflects a clinical situation rather than an anatomical structure. A new clinical classification for aberrant, accessory obturator vessels and CMOR is proposed regarding the anatomical variations, and the location of vessels to the deep femoral ring. The clinical significance of accessory obturator, aberrant vessels and CMOR is delineated in oncogynaecological and urogynaecological surgery.

Evolution and Transformation of Uterine Transplantation: A Systematic Review of Surgical Techniques and Outcomes.

Uterine transplantation (UTx) is acknowledged to be on the second (2A) of five steps of development in accordance with the staging system for the evaluation of surgical innovations. Accordingly, we aimed to systematically review the available evidence of the surgical techniques and outcomes of UTx in terms of graft survival. A comprehensive search was conducted across PubMed Medline, Cochrane-EBMR, Scopus, Web of Science, and CENTRAL through November 2020. Forty studies, reporting 64 recipients and 64 donors, satisfied inclusion criteria. The surgical time and the estimated blood loss were 515 minutes and 679 mL for graft procurement via laparotomy, 210 minutes and 100 mL for laparoscopic-assisted graft harvest, and 660 minutes and 173 mL for robotic-assisted procedures, respectively. Urinary tract infections (n = 8) and injury to the urinary system (n = 6) were the most common donor complications. Using the donor's internal iliac system, two arterial anastomoses were performed in all cases. Venous outflow was accomplished through the uterine veins (UVs) in 13 cases, a combination of the UVs and the ovarian/uteroovarian veins (OVs/UOVs) in 36 cases, and solely through the OVs/UOVs in 13 cases. Ischemia time was 161 and 258 minutes when using living donors (LD) and deceased donors (DD), respectively. Forty-eight uteri were successfully transplanted or fulfilled the purpose of transplantation, 41 from LDs and 7 from DDs. Twenty-five and four live childbirths from LDs and DDs have been reported, respectively. UTx is still experimental. Further series are required to recommend specific surgical techniques that best yield a successful transplant and reduce complications for donors and recipients.

Conformability of the GORE EXCLUDER iliac branch endoprosthesis is associated with freedom from adverse iliac events

ObjectiveThe GORE EXCLUDER iliac branch endoprosthesis (IBE; W.L. Gore & Associates, Flagstaff, Ariz) is designed to preserve internal iliac artery (IIA) patency during endovascular treatment of aneurysms involving the common iliac artery. The device is intended to conform to iliac tortuosity, which may decrease adverse iliac events (AIE). The objective of this study was to evaluate risk factors for AIE after IBE implantation. MethodsThis was a post hoc analysis of the prospective, multicenter GORE 12-04 IBE pivotal trial. Patients with preoperative and postoperative axial imaging were included, with analysis based on each treated iliac system. An independent core laboratory performed all scan measurements, including iliac diameters, lengths, and tortuosity. Conformability was analyzed by the changes in tortuosity after IBE deployment, with less change indicating greater conformation. The end point was AIE, defined as ipsilateral radiographic or clinical complications. Critical nonconformation was defined as a threshold change in tortuosity associated with a significant increase in AIE. ResultsWe included 98 patients with 101 treated iliac systems. There were eight AIE (8%; six IIA component occlusions, one iliac branch component occlusion, and one EIA dissection requiring reintervention). Patients with AIE had smaller IIA diameters and less IBE conformability. After multivariable logistic regression analysis, an IIA diameter of less than 10 mm and a change in total iliac tortuosity beyond –15% were independently associated with AIE (odds ratio, 12 [interquartile range, 1.4-110] and odds ratio, 8.2 [interquartile range, 1.5-46], respectively), and the latter was used to define critical nonconformation. Critical nonconformation occurred in 11% of treated systems, and was associated with a high rate of AIE (36% vs 4%; P = .004). ConclusionsEndograft conformation is a novel device property and technical outcome that, along with a larger IIA diameter, is associated with freedom from AIE after IBE deployment. An evaluation of these risk factors may better inform the management of patients with iliac aneurysmal disease. Further research on endograft conformation and patient outcomes is warranted, particularly for those with challenging anatomy undergoing complex procedures.

Resuscitative Endovascular Balloon Occlusion of the Aorta in Hemodynamically Unstable Patients With Pelvic Ring Injuries.

To evaluate the outcomes of patients with pelvic ring injuries managed with resuscitative endovascular balloon occlusion of the aorta (REBOA). Retrospective case series. Academic, Level 1 trauma center in North America. Twenty-five patients with disruption of the pelvic ring and hemodynamic instability. Placement of a REBOA device as an adjuvant treatment to trauma resuscitation. Death and ischemic-related complications. The average age of patients was 43 years (range: 17-85). Patients presented with a median lactate of 6.3 mmol/L, systolic blood pressure of 116 mm Hg, heart rate of 121 beats/minute, and injury severity score of 34. The median unit of packed red blood cells received through transfusion in the first 24 hours of hospital admission was 13 (interquartile range: 8-28). Young-Burgess injury patterns included fractures of the following types: 5 lateral compression (LC)-1, 1 LC-2, 8 LC-3, 4 anteroposterior compression-2, and 7 anteroposterior compression-3. Angiography and embolization were performed in 24 (96%) patients. Selective embolization occurred in 18 (72%) patients, with nonselective angiography of the iliac system occurring in 7 (24%) patients. There were 12 (48%) deaths, 7 (28%) patients requiring lower extremity fasciotomy, and 5 (20%) patients requiring lower extremity amputations, and there was 1 (4%) patient requiring thrombectomy. REBOA use in pelvic ring injuries is rare and most frequently used in critically ill patients with polytrauma. Successful pelvic embolization can occur in concert with REBOA use; however, the severity of injury is associated with a high complication profile. In this series of 25 patients, in-hospital mortality was 48%. For those patients who survived, 54% experienced a major complication (fasciotomy, amputation, and deep infection). Further investigation is required to evaluate the role REBOA may play in managing these patients. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Laterally extended parametrectomy

ObjectiveTo describe the laterally extended parametrectomy (LEP) surgical technique, emphasizing the main challenges of the procedure.MethodsLEP was designed as a more radical surgical procedure aiming to remove the entire parametrial tissue from the pelvic sidewall. Its initial indications were for lymph node positive Stage Ib (current International Federation of Gynecology and Obstetrics 2018 Stage IIIc) and Stage IIb cervical cancer. Currently, with most guidelines recommending definitive radiochemotherapy for these cases, initial LEP indications have become debatable. LEP is now mainly indicated for removing tumors involving the soft structures of the pelvic sidewall during a pelvic exenteration, aiming to obtain lateral free margins. This expands the lateral borders of the dissection to not only the medial surface of internal iliac vessels, but also to the true limits of the pelvic sidewall.ResultsDuring LEP, the parietal and visceral branches of the hypogastric vessels are divided at the entry and exit level of the pelvis. Consequently, the entire internal iliac system is excised, and no connective or lymphatic tissue remain on the pelvic sidewall. The main technical challenges of LEP are caused by the difficulty in ligating large caliber vessels (internal iliac artery and vein) and the variable anatomic distribution of pelvic sidewall veins.ConclusionLEP is a feasible technique for removing pelvic sidewall recurrences, aiming to obtain surgical free margins.

Anatomical and Clinical Implication of Corona Mortis in the Anterior Approaches of Pelvis in Sudanese Patient

Background: Corona Mortis is an abnormal blood vessels connecting Between obturator and external iliac systems of vessels and inferior epigastric vessels. It is located behind the superior public ramus at a variable distance from the symphysis pubis. Orthopaedic surgeons and obestitrtion found these vessels in the field of surgery. So displaced fractures or iatrogenic injury, can cause life threatening bleeding and hence these vascular anomalies are referred to us crown of death. The bulk of the studies about the corona mortise were conducted in the cadavers or 3D CT angiography and there was no studies were conducted about corona mortise in Sudan. The purpose of this study was to study the corona mortis anatomical and clinical implication in the anterior approaches to the pelvis and acetabulum in Sudanese patient. Methodology: Hospital based descriptive cross-sectional study was conducted among patients sustaining anterior pelvic anterior acetabulum fracture and underwent open reduction internal fixation by reconstruction plates. This study was conducted in Bahri Teaching Hospital from June 2017 to June 2018. Through the most common anterior approaches to the pelvis and acetabulum (Stoppa-modified stoppa-ilioinguinal), done by single surgeon and fulfil data sheet intra-operatively. Results: In a total of 30 pelvic halves corona mortis was detected in 13 patients (43%).The Majority in the Rt.hemipelvies 7 (53.8%) specimens: arterial 4/13 (30.8%), venous 1/13 (7.7%) and both arterial and venous in 8/13 (61.5%) specimens respectively. Of these (53.9%) had a large Diameter > 5 mm and the largest one measure 80 mm, with mean distance From the symphysis 5.8 + 1.6 mm. Conclusion: Only 13 patients have corona mortis, 12 of them were arterial with diameter more than 5 mm (53%), and thus surgeon should exercise caution during Surgery and secure its site to help minimizing surgery time, Clear surgical field and prevent iatrgenic injury.

Venous Recanalization and Stenting After Iliac Vein Injury

The objective of this study was to report an endovascular treatment for patients experiencing complications after iliac vein ligation. Management of venous injury consists largely of venous ligation or primary repair. Complications consist of lower extremity swelling, venous hypertension, venous thromboembolism, and compartment syndrome. Whereas conservative management is often successful for symptomatic swelling, there is little current literature regarding treatment of failed conservative therapy. A retrospective chart review performed from 2017 to 2020 identified three patients who underwent recanalization and venous stenting after previously ligated iliac vein. Case 1: A 23-year-old man suffered a gunshot wound to the left external iliac requiring ligation. He developed venous hypertension requiring fasciotomy of the left lower leg and thigh. Recanalization with stenting of the left external iliac vein with mechanical thrombectomy of the common femoral and external iliac vein was performed. Completion venography showed no residual stenosis. The patient was discharged on anticoagulation with normal flow on noninvasive studies 2 months later. Case 2: A 21-year-old man suffered a gunshot wound to the abdomen with injury to the inferior vena cava (IVC) and right iliac vein requiring ligation. Postoperatively, he developed iliac vein stenosis with symptomatic lower extremity swelling. Iliac vein recanalization with bilateral iliac vein stenting and IVC confluence reconstruction was performed. He was discharged on anticoagulation with patent venous stents and normal flow on noninvasive studies 2 months later. Case 3: A 44-year-old man presented with chronic swelling and left leg pain following ligation of the left iliac vein after iatrogenic injury during spinal surgery. Conservative compression therapy was unsuccessful. Preoperative computed tomography venography revealed chronic occlusion of the left iliac vein. Recanalization was performed, with improvement of flow through the left iliac system with filling into the IVC. The patient was discharged on anticoagulation, with patent stents on noninvasive studies at 6-month follow up. Venous recanalization with stenting is a successful treatment for complications after iliac vein ligation.

Endovascular correction of venogenic erectile dysfunction in May–Thurner syndrome (clinical case)

Introduction. Secondary varicose small pelvic veins with the development of chronic venous insufficiency due to obstruction of the magistral venous vessels, in particular, the left common iliac vein and the right common iliac artery (May–Thurner syndrome), occupy a special place in the structure of the causes of venogenic erectile dysfunction (ED).The study objective is to present the clinical case of arteriovenous conflict (May–Thurner syndrome), leading to the development of secondary varicose small pelvic veins in men and venogenic ED, as well as modern methods of its verification and endovascular surgical repair.Clinical case. A clinical case of successful endovascular correction of venogenic ED is presented. The patient is diagnosed with: May– Thurner syndrome. Pelvic varicose disease С3 (according to CEAP Classification). Condition after endovascular balloon angioplasty and stenting of the left common iliac vein. Bilateral varicocele. Condition after bilateral varicocelectomy in 2018. Severe venogenic ED (pathological venous drainage, proximal type, International Index of Erectile Function (v. 5) – 12 points; Er3 according to the Unem Scale) in accordance with the Comprehensive Classification System for Chronic Venous Disorders. On July 24, 2019 endovascular occlusion of the Santorini’s plexus veins was performed with the installation of occlusion spirals in their lumen according to Gianturco. In order to provide visualization of the veins in the Santorini’s plexus, given the impossibility of cannulation of the deep vein of the penis, bilateral symmetrical cannulation of the cavernous bodies of the penis was carried out to perform cavernosophlebography. The left common iliac vein was catheterized according to the Crossover technique. Under phlebography control we ensured that the stent in the common iliac vein passed without signs of loss of its lumen. The internal pudental vein on the left was selectively catheterized. Hydrophilic guidewire was introduced through the veins of the periprostatic plexus into the right internal pudental vein. Selective catheterization of the periprostatic venous plexus was not possible due to pronounced tortuosity, valve flaps of the veins and small diameter of the catheterized veins. It was decided to pass the guidewire further through the right iliac vein system with access to the inferior vena cava. Further, the guidewire was again transferred to the left common iliac vein (double crossover). The left common femoral vein was punctured followed by the placement of 5 Fr introducer sheath according to Seldinger. The guidewire tip was fixed by the loop in the left common iliac vein, then captured and brought out through the introducer in the left common femoral vein. A catheter Сobra15 Fr was inserted through a crossover guide from the left common femoral vein into the right internal iliac vein and further into the periostatic venous plexus. Gradually veins of the Santorini’s plexus were selectively catheterized followed by Gianturco coils embolization.Conclusion. The first choice surgery for verified proximal type ED is endovascular occlusion of the veins in the Santorini’s plexus through the deep vein of the penis, which allows to change the hemodynamics in the penis and provide sufficient erection without resorting to endofalloprosthesis of the penis. Single or double-sided transfemoral access is suggested for patients when access through the deep vein of the penis is rather challenging or absent.

Endovenöse Rekanalisationen von chronischen Beckenvenenverschlüssen

Approximately 60 % of patients with acute iliofemoral deep vein thrombosis recover without further symptoms. However, 40 % will have some degree of post-thrombotic syndrome (PTS) and 4 % will develop severe PTS. PTS is the most common complication; it reduces quality of life and increases DVT-related costs. The clinical symptoms and severity of PTS may vary; the most common symptoms include edema, pain, hyperpigmentation, lipodermatosclerosis, and ulceration. PTS is based on the principle of outflow obstruction, may be caused by venous hypertension, and may lead to valvular damage and venous reflux or insufficiency. A significant lumen reduction within the iliac vein system is defined by an aspect ratio ≥ 2. Recent technical developments and new dedicated venous stent techniques now give the opportunity to recanalize even complex venous outflow obstructions. First in man safety and efficacy data are very promising for the new dedicated venous stents, but long-term data are still missing.

AAA 1. Hybrid Pelvic Revascularization for Complex Open Repair of Aortoiliac Aneurysms

Recent advances in endovascular strategies for hypogastric artery management in endovascular aneurysm repair have highlighted the importance of pelvic revascularization in avoiding major patient morbidity and mortality. However, even using the most liberal anatomic constraints for newer branched devices, total endovascular salvage of the hypogastric artery is possible in only approximately 50% of cases. Furthermore, open repair of hypogastric aneurysms is associated with a high rate of impotence and the likelihood of ligation, depending on extent of the aneurysm. In addition, the need for suprarenal repair through a decubitus approach makes exposure of the right iliac system difficult. This report highlights a strategy of hybrid pelvic revascularization (HPR) to improve outcomes of open repair of complex aortoiliac aneurysms. Patients considered for HPR undergo deployment of endovascular stent grafts into hypogastric or external iliac arteries with concomitant coil embolization of branch vessels as indicated. The patient is then brought back for open repair with intentional avoidance of dissection around the aortic bifurcation, thus limiting injury to the autonomic nerves. A proximal aortic clamp is placed, and the stent grafts are controlled from inside the aneurysm sac. Reconstruction then proceeds with direct anastomosis to the stent grafts and outflow vessels. This report describes the outcomes with our initial three patients undergoing HPR. Three patients underwent HPR with a follow-up range of 11 to 14 months. No death has occurred. One patient underwent bilateral hypogastric HPR (Fig) for bilateral iliohypogastric aneurysms; two patients underwent right iliac HPR to aid in open suprarenal repair through the decubitus position. No new cases of impotence or buttock claudication have been reported. Ranges for hospital details include the following: estimated blood loss, 325 to 695 mL; transfusion, 0 to 3 units; length of stay total, 9 to 13 days; intensive care unit length of stay, 3 to 7 days; and open operative times, 201 to 346 minutes. In the endovascular aneurysm repair era, open repair of aortoiliac aneurysms is increasingly complex. This report outlines a novel technique to assist in decreasing operative complexity and morbidity using hybrid technique of staged endovascular pelvic stent graft revascularization followed by open repair with limited pelvic dissection.