Internal fistula stenosis with true pseudoaneurysm formation in a patient on maintenance hemodialysis: A case report

BACKGROUND

Arteriovenous fistula stenosis can directly lead to the formation of autologous arteriovenous fistula aneurysms (AVFAs), but the coexistence of true and pseudoaneurysms is relatively rare. The coexistence of true and pseudoaneurysms increases the risk of rupture of the arteriovenous fistula and complicates subsequent surgical intervention, potentially posing a threat to the patient's life, and thus requires significant attention.

CASE PRESENTATION

The patient presented with arteriovenous fistula (AVF) after hemodialysis 6 years ago. 2 years ago, the patient presented with a mass that had formed near the left forearm arteriovenous fistula and gradually increased in size. Preoperatively, the AVF stenosis was identified as the cause of the mass formation, and the patient was operated on. First, the blood flow was controlled to reduce the pressure at the aneurysm, and then the incision was enlarged to separate the AVF anastomosis from the mass area. The stenotic segment of the true and pseudo aneurysms and cephalic vein was removed and the over-dilated proximal cephalic vein was locally narrowed and subsequently anastomosed with the proximal radial artery to create AVF. The patient was dialyzed with an internal fistula the next day and showed no clinical manifestations related to end-limb ischemia.

CONCLUSION

We removed a true pseudoaneurysm in AVF and secured the patient's vascular access. This report provides an effective strategy to manage this condition.

Endovascular repair of isolated post-traumatic subclavian artery false-aneurysm (FA) using gore viabahn vbx-balloon-expandable (BE) stent-graft: case report and literature review

True and false aneurysms (FA) of the subclavian artery are at high risk of rupture due to their localization and proximity/closeness to the articular bone structures of the upper thoracic outlet and shoulders. Surgical and endovascular treatments are good options to avoid complications such as aneurysms rupture, thrombosis and distal embolism alone or in combination. Self-expandable (SE) covered stents are the most used devices for the treatment of subclavian artery aneurysms. We report on a case of post traumatic left intra-thoracic subclavian artery FA treated using endovascular technique, highlighting the usefulness of the new covered Gore Viabahn VBX-BE stent-graft that combines the advantages of a high radial strength of a BE stent with the deliverability and conformability of a SE stent.

A Growing Two-Decade-Old True Left Ventricular Aneurysm: A Case Report

Left ventricular aneurysms (LVA) occur after an infarcted area of the myocardium necrotizes, fibroses, and expands, forming a dyskinetic cavity. Most ventricular aneurysms are asymptomatic and go unrecognized unless found incidentally. Symptoms commonly reported include angina, heart failure, syncope, and even sudden cardiac death. Late complications from left ventricular aneurysms are infrequently reported. This case reports an elderly woman who presented with new-onset angina from an expanding 18-year-old true left ventricular aneurysm that was successfully treated with surgical repair.

Management of Patients With Aortocoronary Saphenous Vein Graft Aneurysms: JACC State-of-the-Art Review

Saphenous vein graft aneurysms (SVGAs) following coronary artery bypass grafting (CABG) surgery were first described in 1975. Although rare, in the absence of a prompt diagnosis, SVGAs can be responsible for serious complications and adverse outcomes. The clinical presentation of SVGAs described in the literature can vary from an asymptomatic patient with an incidental radiological finding to a profoundly shocked patient with life-threatening hemorrhage secondary to SVGA rupture. Improvements in diagnostic tools within the last decade, such as multislice computed tomographic scanning, has enabled early detection of SVGAs, and therefore, an expansion of the current management options. In this review, the current data and knowledge about clinical presentation, diagnosis, natural history, and treatment of SVGAs are updated, with a specific emphasis on the evolution of management strategies of this rare complication over the last 45 years. Finally, a clinical algorithm to guide decision-making and management is proposed.

Superficial Temporal Artery True Fusiform Aneurysm With Several Lateral Feeding Vessels

A 49-year-old man flight attendant with a past medical history of Roux-en-Y bypass and massive weight loss 18 months prior was referred for surgical management of a superficial temporal artery aneurysm. Imaging confirmed the diagnosis. Intraoperatively a 1 cm fusiform aneurysm was identified with numerous feeding side branch vessels. The aneurysm was suture ligated and excised in toto with pathologic analysis showing involvement of all vessel layers. This case highlights a rare true aneurysm of the superficial temporal artery and aberrant anatomy of multiple side branches feeding the aneurysm and complicating dissection and excision.

True Aneurysm of the Breast After Vacuum-assisted Removal of Benign Masses: A Case Report

Rationale

The most common complications of vacuum-assisted removal (VAR) for benign breast masses are hematoma, infection, and occasionally pseudoaneurysms. To the best of our knowledge, this is the first report of a true aneurysm following VAR for breast fibroadenomas.

Case Presentation

A 50-year-old woman underwent VAR of bilateral benign breast masses under ultrasonic guidance. Routine breast ultrasound examination was performed 3 months later, and no discomfort was observed during follow-up.

Diagnoses and Interventions

Physical examination revealed a slightly palpable, arterial-like pulsation in the lateral part of the right breast. The two-dimensional ultrasound showed that there was a well-defined anechoic nodule in the right breast at the 9 o’clock position 3 cm from the nipple, measuring 6 mm × 4 mm. Color Doppler sonography demonstrated that it was a localized dilated intramammary arteriole within the colorful flow. Spectral Doppler illustrated a high-velocity turbulent arterial flow component inside. Based on these findings, the patient was diagnosed with an iatrogenic true aneurysm of the breast. Given her overall good condition, conservative treatment with regular imaging surveillance was adopted.

Outcomes

Up to now, the patient remains asymptomatic, and the size of the aneurysm has not changed.

Lessons

With the increasing use of interventional diagnosis and treatment techniques, iatrogenic vascular complications are likely to occur more frequently. Careful duplex ultrasound examination prior to or following the procedure is strongly recommended. In the absence of risk factors, we recommend a conservative approach to small, stable aneurysms.

Aneurysmectomy and Revascularization of Anterior Tibial Artery Aneurysm: Case Report

An 86-year-old man presented with a pulsatile mass in the anterior compartment of the right lower leg. He had become aware of it two months earlier. Computed tomography angiography revealed a fusiform 3.2×5 cm aneurysm of the anterior tibial artery. Mural thrombosis in the aneurysm was absent. Peripheral pulse was normal. We performed aneurysmectomy and revascularization using a saphenous vein graft. Histological findings revealed that the mass was a true aneurysm. The clinical course was good, and the graft has remained patent for six months.

Repair of a true extracranial internal carotid artery aneurysm with transposition surgery in a pediatric patient: A rare case

Objectives

Atherosclerosis is the most common etiologic factor for extracranial carotid artery aneurysm in adults, while in childhood, connective tissue diseases, peritonsillar abscess and infections are the most common. Congenital carotid artery aneurysms are rarely reported in the literature.

Methods

We present a 10-year-old girl with congenital extracranial left internal carotid artery aneurysm and the treatment management.

Results

Computed tomography angiography at six months showed that internal carotid artery segments were normal. There was no obstruction or aneurysm recurrence.

Conclusions

Although extracranial carotid artery aneurysms are rare, they can cause complications such as rupture and thromboembolism with high mortality and morbidity. Therefore, the treatment of extracranial carotid artery aneurysms is recommended.

True Aneurysm of the Uterine Artery in a Young Nulliparous Female: An Extremely Rare Vascular Entity

We present the first case of a large true uterine artery aneurysm, with a 5-cm diameter, in a 35-year-old nulliparous woman who presented with lower abdominal pain and dyspareunia. She underwent successful ligation and excision of the aneurysm using the Pfannenstiel approach. The diagnostic modalities and treatment option for such a case is discussed herein.

Idiopathic true aneurysm of distal radial artery: case report

INTRODUCTION

The incidence rate of true non-traumatic radial artery aneurysms (RAAs) is low, and very few cases have been described. The majority are traumatic in origin and are iatrogenic pseudo-aneurysms following arterial cannulation. However, other rare causes such as vascular tumors, connective tissue diseases, and occupational injury have also been reported. Only eight cases were reported as idiopathic true RAA. Herein, I describe a case of true idiopathic distal RAA, which was managed by surgical repair.

CASE PRESENTATION

A 61-year-old-man with no significant medical history presented to vascular clinic with complaint of a nontraumatic mass on the volar aspect and radial side of his right wrist for 6 years. Duplex ultrasound and computed tomography angiogram revealed distal RAA. It was managed by open surgical resection with primary end-to-end anastomosis. Histopathological studies revealed true aneurysm of the distal radial artery.

CONCLUSION

True distal RAAs are an extremely rare entity. Unawareness of this condition might lead to inappropriate management with significant morbidity. Surgical management is generally indicated, but the best treatment remains controversial.

Reconstructive surgery of true aneurysm of the radial artery: A case report

True radial artery aneurysms are uncommon pathologies and have an organic cause, unlike trauma-induced false aneurysms. A 52-year-old man presented with a pulsatile mass at the anatomical snuff box area of his left hand. The aneurysm was repaired with reconstructive procedure. Although many posttraumatic and iatrogenic cases of false aneurysm of the radial artery have been reported; there are a few reported cases of a true idiopathic aneurysm. A case of reconstructive surgery for true idiopathic radial artery aneurysm is reported in this paper.

True aneurysm of superficial temporal artery accompanying multiple intracranial aneurysm

Superficial temporal artery (STA) aneurysms are very infrequent. Moreover, true aneurysms, which are not pseudoaneurysms associated with trauma or previous surgery are even rarer. With this manuscript, authors present a case of a 79-year-old woman suffering from subarachnoid hemorrhage whose radiological examinations revealed multiple intracranial aneurysms along with an STA aneurysm. This very rare case, to the best of our knowledge, the second case reported so far, might contribute to the literature and lead further investigations toward the rare association between intracranial aneurysms and STA aneurysms.

Pancreaticoduodenal artery aneurysm formation with superior mesenteric artery stenosis

Celiac stenosis or occlusion is attributed partly to increase blood flow at pancreatic arcade from the superior mesenteric artery (SMA) system and may play a causal role in true aneurysm of pancreaticoduodenal artery (PDAA) formation. However, despite possible increased blood flow in the pancreatic arcades like celiac stenosis, PDAAs with a stenotic SMA are extremely rare, with only three cases have been reported in the literature. We report a case of PDAA with SMA stenosis and review the literature.

Occupational true aneurysm of the ulnar artery: a case report of hypothenar hammer syndrome

A 32-year-old male patient was admitted to the hospital with a pulsing mass of the right palm. He was an electrical construction engineer who frequently used a screwdriver. Computed tomography (CT) examination revealed a 22- × 30-mm saccular aneurysm of the right ulnar artery. The ulnar artery aneurysm was resected, and we could perform direct anastomosis of the ulnar artery. The dilated true aneurysm was compatible with a traumatic origin. A postoperative enhanced CT examination showed smooth reconstruction of the palmar arch. An occupational true aneurysm of the ulnar artery could be treated by resection and direct anastomosis.

Ruptured peripheral aneurysms in a collateral pathway associated with stenosis of a major cerebral artery: Report of two cases

Background

While hemodynamic stress can result in aneurysm formation, it rarely contributes to the development of peripheral aneurysms in collateral pathways. We report two patients with ruptured distal aneurysms in a collateral pathway associated with stenosis of a major cerebral artery.

Case Description

A 67-year-old man presented with intracerebral hemorrhage in the right frontal lobe. Digital subtraction angiography (DSA) revealed severe stenosis of the right middle cerebral artery and two aneurysms in the collateral pathway of the right anterior cerebral artery. The ruptured aneurysm was trapped and resected; histologically, it was a true saccular aneurysm. The unruptured aneurysm was clipped and the patient was discharged without additional neurological deficits. The second patient was a 73-year-old woman with subarachnoid hemorrhage. DSA revealed three arterial dilations. On the 7^th day of hospitalization, one of the aneurysms in a posterior inferior cerebellar artery–anterior inferior cerebellar artery anastomosis that functioned as a collateral pathway in the presence of severe basilar artery stenosis was found to be enlarged. It was treated by selective aneurysmal coil embolization with parent artery preservation. Her postoperative course was uneventful and she was discharged without any neurological deficits.

Conclusion

We document the successful treatment of two patients with ruptured aneurysms in the peripheral portion of a collateral pathway. We discuss the histology of peripheral aneurysms and present a review of the literature.