Cecal Volvulus
Cecum is distended and lumen narrowed by medial folding and displacement, without a twist IMAGING • Radiography: Dilated, air-filled cecum in LUQ or abdominal midline Single, long air-fluid level within cecum…
Neutropenic Colitis (Typhlitis)
Massive mural thickening of cecal ± ascending colon wall – Other segments of colon and small bowel can be affected Mucosal hyperenhancement and submucosal edema (marked) Infiltration of pericolonic fat • Less…
Duodenitis
Upper GI, CECT • Best diagnostic clue Upper GI: Aphthous ulcers, fold thickening, luminal spasm of duodenal bulb (± gastric antrum) CECT: Mural thickening of duodenum ± adjacent inflammation TOP DIFFERENTIAL…
Schatzki Ring
Ring < 13 mm in diameter: Symptomatic Ring 13-20 mm: Occasionally symptomatic Ring > 20 mm in diameter: Asymptomatic • Single-contrast barium esophagram Thin (2-4 mm in height), web-like constriction at…
Boerhaave Syndrome
Usually from left side of distal thoracic esophagus • Chest film Left side pleural effusion or hydropneumothorax Radiolucent streaks of gas along aorta or in neck • Esophagography with nonionic, water-soluble contrast…
Imaging Approach to the Duodenum
(Left) The duodenum is retroperitoneal, except for the bulb (1st portion) . The 3rd portion of duodenum crosses in front of the aorta and behind the superior mesenteric vessels ….
Congenital Absence of Hepatic Segments
Right lobe: Segments 5 and 8 (anterior segments) Left lobe: Segment 4 TOP DIFFERENTIAL DIAGNOSES • Acquired atrophy with cirrhosis Atrophy of anterior and medial segments commonly follows development of focal…
Aortoenteric Fistula
(Left) Graphic shows a fistula between the transverse duodenum and aorta at the site of the graft-aortic suture line . (Right) Axial CECT in a 70-year-old man presenting with fever…
Barrett Esophagus
Due to more severe reflux disease Hiatal hernia in almost all patients Mid esophageal mucosal irregularity, stricture, deep ulceration Risk of cancer > short-segment type • Short segment: Columnar epithelium ≤…
Imaging Approach to Abdominal Manifestations of Systemic Conditions
(Left) Coronal volume-rendered CTA shows the entire common hepatic artery arising from the superior mesenteric artery. The left gastric artery also has a separate origin from the aorta, though difficult…
