3rd most common islet cell tumor. Generally malignant. Larger. Necrotic on imaging studies.
Causes of ischemic bowel?
"Low flow states (shock, major surgery, cardiac abnormality). Atherosclerosis (chronic). Embolism (acute). Venous occlusion (mesenteric venous occlusive disease)."
Major inflammatory processes that affect the terminal ileum?
Crohn's disease. Tuberculosis. Yersiniosis.
Distinguishing features between Crohn's disease and Yersiniosis?
"Yersiniosis: lacks lumen narrowing, lacks deep ulceration, short, self-limited course, heals without scarring. "
Benign splenic tumors and CT characteristics?
"Hemangioma and lymphangioma (hypodense to splenic tissue, may calcify). Hamartoma (isodense to splenic tissue)."
Syndrome of generalized angiomatosis?
"Define pseudopolyp, cobblestoning, and post-inflammatory polyp?"
Pseudopolyp: island of normal or edematous mucosa surrounded by ulcerated or denuded mocusa. Cobblestoning: normal mucosa surrounded by linear ulceration (Crohn's disease). Postinflammatory polyp: regenerating normal mucosa.
FAPS (Gardner's type) effect on the mesentery?
When mesenteric fibromatosis occurs in a round shape this is called?