Become isodense (isointense) on venous and delayed phases • Pseudolesions on nuclear medicine studies e.g., “hot” accumulation of Tc-sulfur colloid in left lobe of liver in patients with SVC obstruction “Hot”…
Often lobar, segmental, or wedge shaped Along hepatic vessels, ligaments, and fissures Presence of normal vessels coursing through “lesion” (fatty infiltration) • NECT: Liver attenuation < spleen • US: ↑ echogenicity, ↑…
Deformity of bulb (edema and spasm and scarring) Pseudodiverticula balloon-out between areas of fibrosis and spasm “Cloverleaf” deformity of bulb due to pseudodiverticula • CT with IV and oral contrast medium…
Diagnosis best made on portal venous phase images due to heterogeneous arterial phase enhancement Global infarction: Complete nonenhancement of spleen – ± cortical rim sign: Preserved enhancement of peripheral rim of…
Transthoracic esophagectomy: Usually performed through right intercostal approach (Ivor Lewis procedure) Other options include minimally invasive (laparoscopic) procedures • Stomach is ideal conduit, as it has reliable blood supply and can…
Diagnosis requires excluding other causes of biliary dilatation, including tumor, stone, or stricture Commonly associated with cholelithiasis, cystolithiasis, choledocholithiasis, and hepatolithiasis • Classified into 5 types based on Todani classification Type I:…
Head and uncinate process of pancreas drained by ventral pancreatic duct of Wirsung via major papilla Body and tail of pancreas drained by dorsal pancreatic duct of Santorini via minor…
Microcystic adenoma (i.e., classic serous cystadenoma) – Honeycomb or sponge pattern with innumerable internal tiny cysts, enhancing septations, and central scar with calcification Macrocystic serous cystadenoma (usually unilocular) – 10-25% of all…
CT: Homogeneous soft tissue mass in right abdomen with adjacent suture line at duodenal stump MR: Normal pancreatic parenchyma is isointense to renal cortex on T1WI and isointense to muscle…
Several different possible imaging appearances – Mass completely replacing gallbladder (GB) (2/3 of cases) – Irregular focal or diffuse GB wall thickening (20-30%) – Intraluminal polyploid GB mass (∼ 20% of cases) Typically…
