Esophageal Inflammatory Polyp
Smooth, ovoid protuberance and “sentinel fold” on barium esophagram in patient with history of acid reflux disease – Uncommonly, may have irregular border or lobulation – Represents bulbous tip of prominent gastric…
Pulsion Diverticulum
Barium-filled outpouchings from esophagus Usually smooth, rounded contour and wide neck Diverticula tend to remain filled after most of barium is emptied due to lack of muscle in wall – …
Imaging Approach to the Small Intestine
SerosaLongitudinal muscleCircular muscleSubmucosaMucosa(Top) There are 5 layers of the bowel wall. The innermost is the mucosa, the absorptive surface of the gut. The other layers are the submucosa, circular muscle,…
Umbilical Hernia
Can cause patient symptoms but does not necessitate urgent surgery • Findings of bowel ischemia include evidence of bowel obstruction, bowel wall thickening, fat stranding, etc. TOP DIFFERENTIAL DIAGNOSES • Omphalocele Congenital…
Agenesis of Dorsal Pancreas
Complete agenesis: Complete absence of pancreatic neck, body, and tail, Santorini duct, and minor papilla – Ventral pancreas (head and uncinate) appears normal – MRCP: Visualization only of short ventral duct, with…
Appendiceal Tumors
Mucinous cystadenocarcinoma (90%) Colonic-type adenocarcinoma (10%) Lymphoma (< 1%) Carcinoid (common, usually incidental at appendectomy) IMAGING • Round or oval, cystic or solid, mass near tip of cecum • Mucocele RLQ soft…
Duodenal Diverticulum
Location: Medial (70%) descending duodenum in periampullary region, 3rd or 4th portion (26%), lateral (4%) descending duodenum Filling defects within diverticulum (food and gas) CT: Fluid-filled diverticulum may simulate cystic…
Peribiliary Cysts
“String of pearls” or “grapes on a stem” are common appearances • Usually multiple Discrete, linear, or confluent configuration • Size is variable, up to 2.5 cm • Smooth and thin walls; no…
Rectal Prolapse and Intussusception
Rectal mucosa protrudes no more than 1 inch below anus (shown on defecography) • External (complete) prolapse (procidentia) All layers of rectum protrude through anus Diagnosis made on physical exam or…
Radiation Esophagitis
Start with nonionic, low osmolar, water-soluble contrast medium (e.g., Omnipaque) – Concern for aspiration and fistula Follow with barium if no leak or fistula • Acute radiation esophagitis (RE) Superficial ulcers; shallow,…
