Phlebosclerotic colitis.

Phlebosclerotic colitis (PC) is a rare form of ischemic colitis that usually affects the right hemicolon. It is due to ischemia induced by phlebosclerosis in the branches of the superior mesenteric vein that disturb venous return from the colon. The clinical course is different from that of the more common type of ischemic colitis caused by arterial disease. We encountered a 73-year-old woman with PC who had the characteristic computed tomographic finding of fine linear venous calcification that was mainly perpendicular to the long axis of the colon.

Omental torsion with right-sided inguinal hernia.

Omental torsion is a rare cause of acute abdomen. The diagnosis is usually not established before surgery, but recently some reports have described the usefulness of computed tomography (CT) for the detection of this condition. We encountered a 58-year-old man with torsion of the greater omentum secondary to right-sided inguinal hernia, and present the characteristic CT findings of a whirl-like mass with hyperattenuated fatty tissue.

Unexpected accumulation of thallium-201 in bilateral thalamic venous infarction induced by arteriovenous fistula in the posterior fossa: report of a case.

We encountered unexpected accumulation of thallium-201 in a patient with thalamic dementia resulting from bithalamic venous infarction induced by arteriovenous fistula in the posterior fossa The site and degree of abnormal accumulation varied between early and delayed thallium-201 SPECT images. This unexpected and complicated accumulation of thallium-201 appeared to depend on not only breakdown of the blood-brain barrier but also on the hemodynamics of this type of venous infarction.