Adenomyomatosis: Mural GB wall thickening due to formation of intramural diverticula (Rokitansky-Aschoff sinuses) with smooth muscle and epithelial proliferation Cholesterolosis: Deposition of foamy, cholesterol-laden histiocytes in subepithelium of GB IMAGING…
Perisplenic hematoma: Located adjacent to spleen and implies disruption or rupture of splenic capsule Intraparenchymal hematoma: Typically round or irregular in shape Subcapsular hematoma: Constrained by splenic capsule and crescentic…
Micronodular pattern: Earliest findings may be subtle peritoneal thickening and hyperenhancement – Stranding and nodularity in mesentery may result in “pleated” or “stellate” appearance Nodular pattern: More discrete nodules may be present measuring…
Primary (hereditary): Autosomal recessive Secondary: Due to increased iron intake, transfusions, etc. • Hemosiderosis Increased iron deposition without organ damage IMAGING • Liver that is hyperdense on NECT and markedly hypointense on…
Hypervascular pancreatic mass with multiple peptic ulcers and thickened folds • Best imaging tool Helical CT or MR for pancreas and possible metastasis Endoscopic ultrasonography for additional primary sites; guides biopsy…
1 manifestation of fibropolycystic liver disease IMAGING • Biliary hamartomas, polycystic liver disease, choledochal cyst, and Caroli disease Often coexist in same patient • CT or MR: Enlarged dysmorphic liver, left lobe…
Heterogeneous, encapsulated mass located within omentum (usually in right lower quadrant) – Surrounding inflammatory change and fat stranding ± small free fluid Variable attenuation, but usually foci of fat attenuation Usually well…
Tumor is encapsulated Recurs after incomplete excision Variable MR signal intensity locules depending on content of cystic fluid • Malignant potential to develop into cystadenocarcinoma even after years of stability TOP…
Remainder are polyps Gastrointestinal stromal tumor (GIST) is most common Others include lipoma, carcinoid, leiomyoblastoma, lymphangioma, neural tumors IMAGING • Upper GI series: Intact mucosa, obtuse or right angles with wall…
