What are some other diseases which can give aneurysms on abdominal visceral angiography?
• Segmental arterial mediolysis: nonatherosclerotic, noninflammatory arterial disease that affects mainly muscular arteries and can give an angiogram that mimics PAN. It characteristically involves splanchnic arteries in middle-aged and elderly patients; basilar cerebral arteries in adults; and coronary arteries in children and young adults. The aorta is not involved. Most patients present with life-threatening hemorrhages from aneurysmal rupture. Arterial dissection, stenoses, and thromboses can also occur. Pathologically, there is a lytic loss of medial muscle causing arterial dilation and aneurysms. The putative cause is from vasospasm or a variant of fibromuscular dysplasia. Diagnosis is made by clinical presentation, angiographic appearance, and biopsy. Therapy is surgical repair and blood pressure control, but recurrences are common and prognosis is poor.
• Ehlers–Danlos (vascular type, formerly type IV): aneurysms due to vessel wall weakening caused by defect in the production of type III collagen.
• Fibromuscular dysplasia .
• Others: pseudoxanthoma elasticum, neurofibromatosis, atrial myxoma, others.
