... origin of his righthepatic artery. His pain ceased spontaneously within a few hours and no signs of contrast extravasation wereobserved. No associated vascular anomalies, such asaneurysm and ... Dissecting aneurysm of the aorta: a presentation of 15 cases and a review of the recent literature. Ann Intern Med 1947,26:873-889.4. Iha K, Nakasone Y, Nakachi H, Horikawa Y, Gushiken M, Matsuda H: ... Takahashi K, Okawara H,Oga M, Suzuki K, Miyamoto S, Sato R, Murakami K, Fujioka T: Spontaneousdissection of the superior mesenteric artery in four cases treated with anticoagulation therapy....