Radiation Esophagitis

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Radiation Esophagitis

 Start with nonionic, low osmolar, water-soluble contrast medium (e.g., Omnipaque) – Concern for aspiration and fistula  Follow with barium if no leak or fistula • Acute radiation esophagitis (RE)  Superficial ulcers; shallow,…

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Fecal Impaction and Stercoral Ulceration

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Fecal Impaction and Stercoral Ulceration

 Pressure necrosis of bowel lumen (rectum or sigmoid) by fecal mass IMAGING • CECT to evaluate for perirectal and intraperitoneal complications  Fecaloma: Entirely intraluminal mass  Calcification or high-density matter in or…

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Solitary Necrotic Nodule

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Solitary Necrotic Nodule

 No enhancement on CECT  Calcification may be seen • MR characteristics are secondary to low cellularity, vascularity, and water content of lesion  Low signal intensity on all sequences (T1WI and T2WI)…

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Whipple Disease

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Whipple Disease

 Distal duodenum and jejunum are most often involved, with distal small bowel/ileum involved in severe cases  Thickened, irregular folds with sand-like micronodules  Small bowel lumen may be normal or mildly…

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Lumbar Hernia

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

 Can occur in either superior lumbar triangle of Grynfeltt-Lesshaft or inferior lumbar triangle of Petit – Superior lumbar triangle of Grynfeltt-Lesshaft defined by 12th rib superiorly, superior border of internal oblique inferiorly,…

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Vicarious Excretion

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Vicarious Excretion

 High-density material within gallbladder (GB) – CT > 10x more sensitive than radiographs in detecting slight differences in density – Mild to moderate opacification of GB bile on day after CECT or…

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Eventration and Paralysis of the Diaphragm

Nov 16, 2016 by in GASTROINTESTINAL IMAGING Comments Off on Eventration and Paralysis of the Diaphragm

 Eventration: Diaphragmatic contour is eccentric, with upward bulging of affected portion of diaphragm  – Usually anteromedial aspect of right hemidiaphragm  Paralysis: Asymmetric elevation of involved hemidiaphragm with basal atelectasis • US  Sonography…

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