Radiology Notes

My notes during radiology residency, fellowship, and beyond…

Archive for the ‘small bowel’ Category

Disease and Bowel location

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  • Amebiasis = right colon
  • Lymphoma = ileum
  • Sprue = entire colon
  • Giardiasis = proximal small bowel
  • Yersinia = terminal ileum
  • Crohn’s disease = terminal ileum
  • Ulcerative colitis = rectum
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Written by lmwong

February 3, 2010 at 11:10 am

Featureless Small Bowel

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Toothpaste, tubular

  • graft-vs.-host disease (GvH)
  • Mycobacterium avium complex (MAC) (in AIDS)
  • ischemia
  • Crohn disease
  • radiation
  • Strongyloides
  • milk enteropathy
  • sprue
  • corrosive enteritis
  • lymphoma
  • amyloidosis
  • mastocytosis
  • FUDR toxicity

Written by lmwong

February 3, 2010 at 11:00 am

Multiple Small Bowel Lesions Differential

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  • lymphoma
  • polyposis syndrome
  • hemangiomas
  • neurofibromas
  • metastases

Written by lmwong

January 28, 2010 at 4:15 pm

Duodenal Narrowing Differential

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Benign

  • peptic ulcer disease
  • pancreatitis
  • crohn disease
  • hematoma
  • SMA syndrome
  • annular pancreas

Malignant

  • adenocarcinoma
  • lymphoma
  • malignant GIST
  • mets

Written by lmwong

January 18, 2010 at 9:51 am

Duodenal Filling Defects

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Malignant

  • adenocarcinoma
  • ampullary carcinoma
  • lymphoma
  • malignant GIST
  • metastasis

Benign

  • villous adenoma (FAP)
  • polyps (most are gastric polyps that prolapse into duodenum)
  • GIST
  • lipoma (submucosal, smooth surface, fat density)

Nonneoplastic

  • heterotopic gastric mucosa
  • Brunner gland hyperplasia
  • Enteric duplication cyst
  • flexural pseudopolyp
  • annular pancreas

Written by lmwong

January 18, 2010 at 5:18 am

Duodenal Ulcer

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  • 2-3 times more common than stomach ulcers
  • M>F
  • increased secretion of acid
  • high incidence of H pylori, stress, smoking, caffeine, corticosteroid use
  • fixed outpouching of barium that does not change shape
  • most along anterior surface of duodenal bulb
    • only 1 in 20 occur beyond bulb
    • think Zollinger-Ellison syndrome or malignant ulcer
  • narrowing of distal and proximal duodenum
  • complications: perforation, bleeding, obstruction, penetration
  • multiple = Zollinger-Ellison syndrome
  • clover-leaf barium collection = scar from old ulcer; should change in shape
  • two pyloric channels; fistula connects stomach to duodenum through peptic ulcer

Written by lmwong

January 17, 2010 at 9:32 am

Posted in abdomen, gi, small bowel

Postoperative Stomach Differential

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  • Marginal Ulcer
  • Afferent loop syndrome
  • Blown duodenal stump
  • Jejunogastric intussusception
  • Gastric remnant bezoar
  • Postgastrectomy carcinoma
  • Bile reflux gastritis

Written by lmwong

January 17, 2010 at 8:46 am