Iliac artery dissection and rupture in a patient with classic Ehlers-Danlos syndrome due to COL5A1 null variant

This is a case of a 46-year-old woman who presented with right common iliac artery dissection preceded by a left common iliac artery dissection and rupture 6 years earlier. Both iliac arteries required repair. Based on her presentation, she met the clinical diagnostic criteria for vascular Ehlers-Danlos syndrome; however, the genetic workup demonstrated that she had classic Ehlers-Danlos syndrome due to a null variant in COL5A1, which is rarely associated with arteriopathy.

Hematochezia due to rectal invasion by an internal iliac artery aneurysm: A case report

BACKGROUND

This case report presents the rare occurrence of hematochezia due to an internal iliac artery aneurysm leading to an arterioenteric fistula, expanding the differential diagnosis for gastrointestinal bleeding. It emphasizes the importance of considering vascular origins in cases of atypical hematochezia, particularly in the absence of common gastrointestinal causes, and highlights the role of imaging and multidisciplinary management in diagnosing and treating such unusual presentations.

CASE SUMMARY

A 75-year-old man with a history of hypertension presented with 12 d of hematochezia, experiencing bloody stools 7-8 times per day. Initial computed tomography (CT) scans revealed an aneurysmal rupture near the right internal iliac artery with suspected hematoma development. Hemoglobin levels progressively decreased to 7 g/dL. Emergency arterial angiography and iliac artery-covered stent placement were performed, followed by balloon angioplasty. Despite initial stabilization, minor rectal bleeding and abdominal pain persisted, leading to further diagnostic colonoscopy. This identified a neoplasm and potential perforation at the proximal rectum. An exploratory laparotomy confirmed the presence of a hematoma and an aneurysm invading the rectal wall, necessitating partial rectal resection, intestinal anastomosis, and ileostomy. Postoperative recovery was successful, with no further bleeding incidents and normal follow-up CT and colonoscopy results after six months.

CONCLUSION

In cases of unusual gastrointestinal bleeding, it is necessary to consider vascular causes for effective diagnosis and intervention.

Calf arteriovenous malformation presenting as an iliac artery aneurysm: A case report

INTRODUCTION AND IMPORTANCE

Arteriovenous malformations (AVMs) are abnormal connections between arteries and veins. Common signs of AVMs include a pulsating mass, pain, ulceration, bleeding, and tissue necrosis. This case report discusses a rare presentation of an iliac artery aneurysm in a patient with an extensive calf AVM.

CASE PRESENTATION

A 35-year-old male presented with a pulsatile mass in the abdomen, along with symptoms of chronic venous insufficiency in the lower limb. He had undergone multiple surgeries for varicose veins in the past. Initially, external iliac artery aneurysm was diagnosed. Further assessment revealed the presence of an AVM in the calf. After multiple unsuccessful endovascular interventions, amputation was recommended. However, the patient opted for conservative management.

CLINICAL DISCUSSION

AVMs are vascular malformations that are present from birth. Angiography is considered the gold standard for confirming the diagnosis of AVMs. As there is no consensus on the best treatment for AVMs, a multidisciplinary approach is recommended on a case-by-case basis. Delaying treatment can lead to serious complications and increase morbidity and mortality. Treating extensive AVMs that involve the entire extremity can be particularly challenging and often result in poor outcomes.

CONCLUSION

The presence of varicose veins at a young age may indicate an underlying AVM. AVM can manifest in various ways, including arterial aneurysms. In severe cases, extensive AVMs may require limb amputation when other treatments fail.

Transgluteal approach to hypogastric artery aneurysm type II endoleak

An enlarging internal iliac artery aneurysm secondary to a type II endoleak after endovascular aortic repair is an uncommon entity. It carries a significant rupture risk and mortality if not addressed. The present patient had had a 6.8-cm, rapidly growing, excluded hypogastric aneurysm. The results included both a failed transarterial approach and successful percutaneous transgluteal internal iliac artery aneurysm embolization using XperCT software (Philips Healthcare, Andover, MA) for guidance. The salient points included that treatment of the "nidus" alone will not be sufficient for complete endoleak embolization, the use of direct endoleak sac angiography might better delineate the inflow and outflow dynamics than conventional transarterial angiography, and XperCT guidance (Philips Healthcare) can facilitate complex endoleak access.

Endovascular treatment of an isolated iliac artery aneurysm associated with segmental arterial mediolysis

Segmental arterial mediolysis is a noninflammatory nonatherosclerotic vasculopathy of uncertain etiology characterized by dissection and/or aneurysm formation. It affects medium-to-large arteries, primarily the celiac, superior mesenteric, and renal arteries. Iliac involvement is rare, and its specific treatment has not been described. We detail a patient who presented with intrabdominal hemorrhage from a ruptured right colic artery aneurysm. He underwent transcatheter arterial embolization followed by right hemicolectomy. Histopathology confirmed the diagnosis of segmental arterial mediolysis. Endovascular treatment of a 3-cm iliac artery aneurysm was performed 18 months later. There was successful exclusion of the aneurysm demonstrated on computed tomography angiography at 10 years.

Endovascular repair of a common iliac artery aneurysm with an iliac branch device in a patient with vascular Ehlers-Danlos syndrome due to a null COL3A1 variant

Endovascular repair is avoided in patients with connective tissues disorders due to concerns for stent graft migration and endoleaks. We describe a successful endovascular repair of a common iliac artery aneurysm with a bifurcated aortoiliac stent graft and iliac branch endoprosthesis in a patient with Vascular Ehlers-Danlos syndrome (VEDS) due to a null COL3A1 variant. This case demonstrates that the VEDS genotype is associated with tissue integrity, specifically, individuals with VEDS due to null/haploinsufficiency variants, and adds to our understanding of endovascular repair in this population.

Iliac branch endoprosthesis for repair of a common iliac artery aneurysm in Loeys-Dietz syndrome type 3

The commercial availability of the iliac branch endoprosthesis (IBE) has permitted endovascular repair of iliac artery aneurysms with the preservation of pelvic circulation. However, the device instructions for use require certain anatomic criteria that can limit deployment in ≤30% of patients. Moreover, branched endovascular treatment of common iliac artery aneurysms with IBE in patients with connective tissue disorders such as Loeys-Dietz syndrome has not been described. In the present report, we have described our technique of alternative endograft aortoiliac reconstruction to overcome anatomic barriers to IBE placement in a patient with a giant common iliac artery aneurysm in the setting of a rare pathogenic variant in the SMAD3 gene.

Successful endovascular repair of iliac artery aneurysms with unsuitable anatomy by combining unibody bifurcated endograft and iliac branch systems to preserve hypogastric artery blood flow: a report of two cases

Background

To overcome the anatomical limitation of a narrow aorta and short length from the renal artery to the terminal aorta, unibody endograft AFX2 and iliac branch endoprosthesis (IBE) can be combined.

Case presentation

Case 1: The first patient was an 89-year-old woman who had a right saccular common iliac artery (CIA) aneurysm (38 mm); the abdominal aorta was not aneurysmal (diameter, 19 mm). The right CIA’s origin was 10 mm in diameter. A bifurcated AFX2 was placed in an ordinary manner. Then, IBE was inserted in the right leg of the AFX2. Case 2: The second patient was an 87-year-old man diagnosed with an abdominal aortic aneurysm (55 mm), right dissecting CIA aneurysm (20 mm), and right hypogastric artery aneurysm (22 mm) extending to the bifurcation of the superior and inferior gluteal arteries. The length between the renal artery and terminal aorta was 107 mm. The beginning of the right CIA was segmentally stenotic (13 mm). A bifurcated AFX2 was placed in the infrarenal aorta; IBE was advanced to the origin of the right limb of the AFX2. To control the type 1b endoleak, the right superior gluteal artery was embolized with coils and internal iliac components were deployed toward the inferior gluteal artery. Satisfactory results were obtained in both cases.

Conclusion

The AFX2 main body and IBE could be combined to preserve hypogastric blood flow and overcome anatomical limitations.

Sacciform aneurysm of the right common iliac artery in Behcet's disease treated with EVAR: Case report

Introduction

Behcet's disease is a systemic vasculitis with vascular tropism usually manifested by phlebitis. Arterial manifestations are rare, most often result in aneurysms than occlusions. The objective of this article, is to relate our experience and pretherapeutic reasoning for the indication of an endovascular treatment of an atypical sacciform iliac aneurysm, in an elderly patient followed for Behcet's disease.

Case report

This is a 73-year-old patient, followed for Behcet's disease under immunosuppressive treatment and corticosteroids treatment, admitted to our structure, for the surgical management of an aneurysm of the right common iliac artery diagnosed by computed tomographic angiography performed for chronic paroxysmal abdominal pain, treated by EVAR after a multidisciplinary discussion, complicated by a thrombosis of the left leg of the bifurcated aortic stent graft the, managed by performing an extra anatomical bypass, complicated late by the appearance of a Scarpa hematoma, who was evacuated.

Discussion

Behcet's disease is a systemic vasculitis with vascular tropism, usually affecting young. Our case is an elderly subject, whose diagnosis and follow-up of Behcet's disease is recent and whose discovery of this aneurysm was fortuitous, after performing a CT angiogram required for another reason.

The objective of this article, is to relate our experience and pre-therapeutic reasoning for theindication of an endovascular treatment, and our management of the complications.

Conclusion

Endovascular treatment of iliac sacciform aneurysm by placing a covered stent is a good alternative to conventional surgery with fewer complications; especially in front of a field of Behcet's disease.

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Arterial involvement in Behcet's disease is rare.

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Endovascular treatment is an alternative to conventional surgery in treating iliac aneurysms in Behcet's disease.

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The interest of CT scan in suspicion of vascular involvement in Behcet's disease.

A giant left internal iliac artery aneurysm in a patient with Loeys-Dietz syndrome

A 16-year-old female presented with left iliac fossa pain. In January 2021, she was admitted to her local hospital with severe lower abdominal pain and the pelvic ultrasound demonstrated a 13-cm left internal iliac artery dissecting aneurysm with its partial thrombosis. On examination, she had a high-arched palate, multiple skin stretch marks, flat feet and a soft systolic ejection murmur at the left 5th mid-clavicular line. She had a mildly tender abdomen in the left iliac fossa. Computed tomography angiography demonstrated a 12.2 cm × 10.4 cm × 12.5 cm left internal iliac artery aneurysm. During surgery, the aneurysm was incised and the proximal and distal orifices of the internal iliac artery were ligated. Genetic testing yielded 2 mutations in the SMAD3 gene characteristic for Loeys-Dietz syndrome.

Transcatheter Treatment of a Symptomatic Giant Iliac Artery Aneurysm with a BeGraft Peripheral Stent in a 2-Year-Old Child

A 2-year-old girl presented with severe abdominal pain due to a giant iliac artery aneurysm. We embolized the internal iliac artery with microcoils and then eliminated the aneurysmal sac using a BeGraft peripheral stent without any complications. To the best of our knowledge, there are no previous reports of a transcatheter giant iliac artery intervention.

Impact of Compliance with Anatomical Guidelines of "Bell-Bottom" Iliac Stent Grafts for Ectatic or Aneurysmal Iliac Arteries

OBJECTIVE

To evaluate the impact of compliance with anatomical guidelines on outcomes of endovascular aortic aneurysm repair using "bell-bottom" stent grafts (BBSGs).

METHODS

This is a retrospective review from January 1999 to May 2012 of patients who underwent endovascular infrarenal abdominal aneurysm repair and whose iliac limbs were greater than 18 mm in diameter. Computed tomography angiography was utilized for compliance with anatomical guidelines as stated in manufacturer's instructions for use (IFU). The primary outcome observed was iliac limb events. The secondary outcome observed was the need for re-intervention due to BBSG failure.

RESULTS

Of the 376 BBSGs, 55 (15%) in 27 patients met IFU. Aneurysm exclusion was achieved in all patients. The mean follow-up was 44 ± 30 months. Twenty-eight patients (11%) had 29 iliac limb events (12 type 1b endoleaks, 4 aneurysm sac growth, 4 stenosis/kink, 4 retrograde migrations, 2 component separations, 2 ruptures and 1 limb occlusion); all among patients treated outside of IFU (p < 0.04). The rate of aneurysm sac enlargement was similar between both groups, at 56%, respectively, between those treated within and those treated outside of IFU. On multivariate regression analysis, larger common iliac artery (CIA) (HR 1.088, 95% CI 1.016-1.166, p = 0.016), greater CIA tortuosity (HR 2.352, 95% CI 1.004-5.509, p = 0.048) and limbs with more than two characteristics that did not meet IFU criteria (HR 3.84, 95% CI 1.15-12.83, p = 0.03) were associated with higher rates of BBSG events and re-interventions.

CONCLUSIONS

BBSGs effectively seal ectatic CIAs. But rates of iliac limb events and re-interventions are higher among patients who do not meet IFU criteria. The larger CIA diameter, the greater CIA tortuosity and more than two criteria not met by IFU were associated with BBSG failure and re-intervention.

Editor's Choice - Nationwide Analysis of Patients Undergoing Iliac Artery Aneurysm Repair in the Netherlands

OBJECTIVE

The new 2019 guideline of the European Society for Vascular Surgery (ESVS) recommends consideration for elective iliac artery aneurysm (eIAA) repair when the iliac diameter exceeds 3.5 cm, as opposed to 3.0 cm previously. The current study assessed diameters at time of eIAA repair and ruptured IAA (rIAA) repair and compared clinical outcomes after open surgical repair (OSR) and endovascular aneurysm repair (EVAR).

METHODS

This retrospective observational study used the nationwide Dutch Surgical Aneurysm Audit (DSAA) registry that includes all patients who undergo aorto-iliac aneurysm repair in the Netherlands. All patients who underwent primary IAA repair between 1 January 2014 and 1 January 2018 were included. Diameters at time of eIAA and rIAA repair were compared in a descriptive fashion. The anatomical location of the IAA was not registered in the registry. Patient characteristics and outcomes of OSR and EVAR were compared with appropriate statistical tests.

RESULTS

The DSAA registry comprised 974 patients who underwent IAA repair. A total of 851 patients were included after exclusion of patients undergoing revision surgery and patients with missing essential variables. eIAA repair was carried out in 713 patients, rIAA repair in 102, and symptomatic IAA repair in 36. OSR was performed in 205, EVAR in 618, and hybrid repairs and conversions in 28. The median maximum IAA diameter at the time of eIAA and rIAA repair was 43 (IQR 38-50) mm and 68 (IQR 58-85) mm, respectively. Mortality was 1.3% (95% CI 0.7-2.4) after eIAA repair and 25.5% (95% CI 18.0-34.7) after rIAA repair. Mortality was not significantly different between the OSR and EVAR subgroups. Elective OSR was associated with significantly more complications than EVAR (intra-operative: 9.8% vs. 3.6%, post-operative: 34.0% vs. 13.8%, respectively).

CONCLUSION

In the Netherlands, most eIAA repairs are performed at diameters larger than recommended by the ESVS guideline. These findings appear to support the recent increase in the threshold diameter for eIAA repair.

Growth of common iliac artery aneurysms coexisting with abdominal aortic aneurysms: associated factors and potential role of intraluminal thrombus

BACKGROUND

The factors influencing common iliac artery aneurysm (CIA) growth are not fully known. Intraluminal thrombus (ILT) has been studied as a marker of growth in abdominal aortic aneurysms (AAA), but its role in CIAs is unknown. This study aims to examine the factors associated with growth of CIAs coexistent with AAA using serial cross-sectional imaging (CT and MRI) with multiplanar reconstruction (MPR).

METHODS

Patients with synchronous AAA and CIA observed at contrast-enhanced CT or MRI were included. The maximal diameters of both CIA and AAA were measured using MPR. Correlation of the baseline aneurysm diameter and growth rate between CIA and AAA was evaluated. Multivariate regression analysis was used to investigate the factors associated with CIA growth.

RESULTS

Seventy-five AAA patients (age 74±9 years; all male) with 100 CIAs were followed for an average of 2.2±1.2 years. CIA and AAA growth were positively correlated (r=0.39, P<0.001). Multivariate analysis showed that CIA baseline diameter, AAA baseline diameter, and smoking were positively related to CIA growth. In 2-3 cm CIAs (n=59), ILT tends to be an independent predictor of AAA growth (P=0.076), and CIAs with ILT grow at more than twice the rate of CIAs without ILT (1.7 vs. 0.8 mm/year, P=0.036), despite similar baseline diameters.

CONCLUSIONS

CIA baseline diameter, coexisting AAA baseline diameter, and smoking are associated with CIA growth. In CIAs measuring 2-3 cm, the presence of ILT is associated with faster growth, and should be taken into account when determining surveillance intervals and timing of intervention for patients being considered for AAA repair.

Atypical Type 2 Endoleak from an Artery Supplying the Psoas Major Muscle Following Endovascular Repair in a Case of Isolated Common Iliac Artery Aneurysm

In this report, we present a rare case of type 2 endoleak (T2EL) from an artery supplying the psoas major muscle, following an endovascular repair of a common iliac artery aneurysm (CIAA). A 79-year-old male underwent endovascular aneurysm repair (EVAR) for the right isolated CIAA using stent graft, with embolization of the ipsilateral internal iliac artery. The aneurysm was stable for 2 years, after which a follow-up CT revealed a 5 mm increase in the CIAA diameter and an endoleak of unknown origin. Conventional and CT angiographies revealed the source to be a branch from the ipsilateral deep circumflex iliac artery supplying the psoas major muscle that had developed an anastomosis at its terminal end with the vasa vasorum at the CIAA. Transarterial embolization of T2EL using glue was performed successfully, following which the T2EL disappeared.

Successful surgical repair of an ilio-iliac arteriovenous fistula associated with a ruptured common iliac artery aneurysm

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We report the successful surgical treatment of an ilio-iliac arteriovenous fistula.

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Although rare, this disease can be life-threatening.

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Use of multiple imaging modalities facilitates correct preoperative diagnosis.

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Balloon occlusion technique is used to minimize blood loss during open repair.

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There was no sign of high-output heart failure because of venous flow failure.

Introduction

We describe the case of an 86-year-old man with an ilio-iliac arteriovenous fistula (AVF) resulting from a ruptured aneurysm. This condition rarely occurs, has a high mortality rate, and was successfully treated via surgery.

Presentation of case

The patient presented with a temporary loss of consciousness and left leg edema. A pulsatile abdominal mass with vascular murmur and thrill was detected. Enhanced computed tomography showed abdominal aortic and iliac aneurysms with left common iliac vein occlusion, and the left external iliac vein was easily seen through the AVF. We directly sutured the AVF and performed aneurysmectomy and prosthetic graft replacement. During surgery, placement of occlusive balloon catheters through the AVF minimized intraoperative bleeding. The patient recovered uneventfully, and swelling of the left leg was immediately reduced after surgery.

Discussion

Although rare, AVFs can be life-threatening, and urgent treatment and intensive care are occasionally needed. Surgical management of AVF requires a definitive preoperative diagnosis and control of venous bleeding during surgery. Fulfilling these major requirements can potentially reduce morbidity and mortality in patients with AVFs. Interestingly, there was no sign of high-output heart failure throughout the treatment course due to compression of the aneurysm and consequent blood flow failure to the left iliac vein.

Conclusion

Using the balloon occlusion technique, we were able to minimize blood loss during open repair. Use of multiple imaging modalities facilitates correct preoperative diagnosis and consequently improves surgical outcome.