Source:http://linkedlifedata.com/resource/umls/id/C0162871
MSH: An abnormal balloon- or sac-like dilatation in the wall of the ABDOMINAL AORTA which gives rise to the visceral, the parietal, and the terminal (iliac) branches below the aortic hiatus at the diaphragm.,NCI: Enlargement and ballooning of the vessel that supplies arterial blood to the abdomen, pelvis and legs.