Spontaneous isolated inferior mesenteric artery dissection

Diagnosis and Management of Isolated Superior Mesenteric Artery Dissection: A Systematic Review and Meta-Analysis

The objective of this study was to analyze the three different management modalities for isolated superior mesenteric artery (SMA) dissection. We did a comprehensive literature search and found 703 articles on the initial search, out of which 111 articles consisting of 145 patients were selected for analysis. The mean age was 55.7 years (standard deviation,9.7;33-85) and 80.6% were male. These patients were managed conservatively (41.3%), endovascularly (28.1%) or surgically (30%). The median follow-up was 10 months (interquartile range [IQR], 4-18 months), 12 months (IQR, 6-19 months) and 14 months (IQR, 6-20 months) respectively. Contrast-enhanced computed tomography (CT) was the most commonly used diagnostic tool in the conservative group (43.8%), while conventional CT scan was the most widely used in endovascular (58.1%) and surgical group (50%). 17% percent of the conservative group had SMA angiography for diagnosis, while this was less than 3% in the other groups. Of these patients, 96.7%, 97.4%, and 100.0% recovered successfully in the conservative, endovascular, and surgical groups respectively. There was no significant difference in the mortality between the three groups (Pearson χ²=0.482). This suggests a conservative and endovascular approach could be used in most patients, which can reduce costs and surgery-related morbidity and mortality. Surgical management should be reserved for cases having infarction or widespread bowel ischemia and in cases where other treatment modalities fail.

Spontaneous Isolated Inferior Mesenteric Artery Dissection With Chronic Mesenteric Ischemia: Case Report and Endovascular Management

We report the clinical details, imaging findings, and management for a 39-year-old female presenting with recurrent episodes of pain in abdomen due to systemic lupus erythematous vasculitis associated with spontaneous isolated inferior mesenteric dissection. Spontaneous mesenteric artery dissection is an uncommon cause of mesenteric ischemia. Symptomatic spontaneous isolated inferior mesenteric artery (IMA) dissection is a rare condition, and its association with systemic lupus erythematosus is not previously described in the English literature. The optimal treatment options are debatable and include medical management, surgical reconstruction, and endovascular therapy. We wish to highlight spontaneous isolated IMA dissection as a rare etiology for chronic mesenteric ischemia and its management by endovascular methods.

Ischemic colitis due to a dissecting aneurysm of the superior rectal artery

Ischemic injury to the bowel is a disease entity that has a wide spectrum of pathological and clinical findings. Patients with chronic ischemia present with colicky abdominal pain, obstructive symptoms and signs of ischemic colonic stricture. We reported the first case of ischemic colitis arising from a superior rectal artery (SRA) aneurysm. Colonoscopy showed non-resolving colitis complicated by sigmoid stricture. CT angiogram with 3D reconstruction showed a dissecting SRA aneurysm measuring 2 cm by 1.2 cm by 1.3 cm. The patient underwent laparoscopic-assisted low anterior resection, which was converted to open because of adhesions and made a full recovery.