Mesenteric adenopathy is often much more evident on coronal-reformatted CT • Ileal ± cecal wall thickening, sometimes with regional ileus Mucosal hyperenhancement, submucosal edema • Normal-appearing appendix TOP DIFFERENTIAL DIAGNOSES • Appendicitis • Crohn…
Chronic pancreatitis, cholestasis, ileal resection • Malabsorption at mucosal level Celiac disease, Crohn, tropical sprue Short bowel, cystic fibrosis Eosinophilic gastroenteritis, Whipple disease Amyloidosis, hypogammaglobulinemia, mastocytosis • Malassimilation Primary and secondary lymphangiectasia…
Lacks muscle layer (unlike distal esophageal A and B rings) IMAGING • Full column barium esophagram with rapid-sequence filming or have patient swallow small marshmallow followed by barium • Appearance: 1-2 mm…
Multiple short-segment annular strictures ± partial SB obstruction Strictures may resemble normal plicae circulares on enteroclysis • CT findings Strictures: Short segmental narrowing of lumen with dilation of bowel upstream Mucosal…
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…
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 – …
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,…
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…
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…
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…
