Zollinger-Ellison Syndrome

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Zollinger-Ellison Syndrome

 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…

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Congenital Hepatic Fibrosis

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Congenital Hepatic Fibrosis

 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…

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Omental Infarct

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Omental Infarct

 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…

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Biliary Cystadenocarcinoma

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Biliary Cystadenocarcinoma

 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…

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Desmoid

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Desmoid

 When involving abdominal wall, often involve rectus or oblique muscles, frequently at incision sites  When involving mesentery, may retract or compress adjacent bowel loops ± small bowel obstruction • Usually solid…

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Intramural Benign Gastric Tumors

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Intramural Benign Gastric Tumors

 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…

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Partial Gastrectomy: Bilroth Procedures

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Partial Gastrectomy: Bilroth Procedures

 Antrectomy with gastroduodenostomy • Billroth 2 (B2) procedure  Distal gastrectomy with gastrojejunostomy • Surgery for gastric cancer  May be some variant of B1 or B2, up to total gastrectomy • Complications include recurrent…

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Meckel Diverticulum

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Meckel Diverticulum

 50% contain ectopic gastric mucosa  90% present with GI bleeding in children IMAGING • Rule of 2s  Seen in ∼ 2% of population  Located within 2 feet of ileocecal valve  Length…

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Transmesenteric Postoperative Hernia

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Transmesenteric Postoperative Hernia

 Most commonly Roux-en-Y gastric bypass and liver transplantation  Much more common when Roux loop is placed in retrocolic position • Almost always congenital in children  May be secondary to prenatal intestinal…

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Viral Hepatitis

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Viral Hepatitis

 Hepatitis B and C are major variants  Only hepatitis B and hepatitis C cause chronic disease  Hepatitis C is leading cause of cirrhosis and hepatocellular carcinoma in USA • Role of…

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