Pure form: Affects only pancreaticoduodenal groove Segmental form: Affects pancreaticoduodenal groove and extends medially into pancreatic head • Pancreatic groove is a theoretical space defined by pancreatic head (medially), 2nd portion of duodenum…
High-density intramural hematoma, pneumoperitoneum, anterior pararenal space fluid/air • Upper GI findings Duodenal lumen narrowing by hematoma; contrast extravasation (peritoneal cavity, retroperitoneum) • Best imaging tool: CECT, upper GI TOP DIFFERENTIAL DIAGNOSES…
Only 50% of hepatic angiomyolipomas have substantial fat component • Arterial phase: Prominent enhancement of nonfatty portion of lesion Central vessels within lesion if mass is large • Fatty component of tumor…
Dysphagia, weight loss, hematemesis, or asymptomatic • Esophageal metastases Direct, lymphatic, or hematogenous spread Direct invasion most common route: Gastric and lung cancer most common primary tumors • Complications GI bleeding, perforation,…
Consider iatrogenic infarction of hepatic mass or liver parenchyma Consider retained absorbable oxidized cellulose (Surgicel) • Embolized, iodinated, poppyseed oil (Ethiodol, Lipiodol) May mimic calcified or hypervascular mass on plain radiography…
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…
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…
Multiple regenerating nodules (NECT or MR), same as other cirrhotic nodules • CT and MR for evaluation of cirrhosis and HCC Not for diagnosis of Wilson disease There are no specific…
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…
