Superior mesenteric artery syndrome: diagnosis and treatment from the gastroenterologist's view.
BACKGROUND
Superior mesenteric artery syndrome (SMAS) is caused by compression of the third part of the duodenum between the superior mesenteric artery and the aorta. It occurs most frequently in patients with rapid weight loss.


METHODS
We report two young patients, who each presented with a longstanding history of postprandial abdominal pain, nausea, and voluminous vomiting. The diagnosis of SMAS was established by digital fluoroscopy and contrast-enhanced spiral computed tomography (CT) scan. The findings obtained by endoscopic ultrasound (EUS) at the site of duodenal compression, using a miniprobe, were of substantial diagnostic value and in good agreement with the radiological observations.


RESULTS
Both patients, once diagnosed, were treated conservatively by providing enteral or parenteral high caloric nutrition. Weight gain was accompanied by the complete relief of symptoms.


CONCLUSIONS
Pathogenesis, diagnostic procedures, and therapy are reviewed in order to draw attention to this rare entity.
Second Department of Internal Medicine, Technical University of Munich, Ismaningerstr. 22, 81675 Munich, Germany.
Florian
F
Lippl
Christian
C
Hannig
Wolfgang
W
Weiss
Hans-Dieter
HD
Allescher
Meinhard
M
Classen
Manfred
M
Kurjak
D000328:Adult; D015179:Colorectal Neoplasms / Q000150:complications; D019160:Endosonography; D004750:Enteral Nutrition; D006801:Humans; D008297:Male; D010288:Parenteral Nutrition; D013478:Superior Mesenteric Artery Syndrome / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000628:therapy*