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Query: UMLS:C0740577 (acute abdominal pain)
 1,982 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Ruptured abdominal aortic aneurysm is the major surgical emergency in the retroperitoneal compartment. Rupture of an abdominal aortic aneurysm is always fatal without urgent operative repair. Computed tomography is the reference standard for the diagnosis of ruptured abdominal aortic aneurysm in hemodynamically stable patients. At CT, the diagnosis is based on the combination of abdominal aortic aneurysm and extraluminal retroperitoneal blood. Retroperitoneal hemorrhage usually demonstrates both isodense and hyperdense areas. In most cases hemorrhage is located in psoas compartments and perirenal space. In the case of ruptured abdominal aortic aneurysm other findings may be demonstrated such as focal interruption of the aortic wall and active extravasation of contrast media in the retroperitoneal compartments. Inflammatory abdominal aortic aneurysm, that may present as acute abdominal pain, should be recognized and differentiated from ruptured abdominal aortic aneurysm. Inflammatory abdominal aortic aneurysm is characterized by a fibrotic process around the abdominal aorta that may entrap adjacent structures such as ureters, duodenum and inferior vena cava. Aortic dissection, mycotic aneurysm, and inferior vena cava thrombosis are less common. Complications occurring after emergency aneurysm replacement are also considered.
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PMID:[Retroperitoneal vascular emergencies]. 879 70

Aortic dissection is rare in the pediatric and young adult population. We hereby present a case of a 17-year- old male patient, without any predisposing factors, who developed an aortic dissection. The initial presentation was acute abdominal pain with massive retroperitoneal hematoma. His clinical condition deteriorated rapidly, did not respond to surgical hemostasis, and died within 36 hours of admission. The major autopsy finding was dissection of the descending aorta, extending from 2 cm distal from the origin of the left Subclavian artery. Microscopically, the aortic sections showed intimal thickening and tearing, medial smooth muscle loss, which was replaced by fibrous tissue, fragmentation of elastic lamellae with widening of interlamellar spaces, and cystic medial degeneration. The morphological features represented degenerative changes of the aorta, which were unusual in such a young patient. The pathophysiology, predisposing factors and relevant reports in the literature of aortic dissection in young patients are reviewed.
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PMID:Aortic dissection in a young patient without any predisposing factors. 1705 41