GASTROINTESTINAL

• ENTERITIS

  RA: thickening of the mucosal folds and poor
• CROHN’S DISEASE

  R.A: “cobblestone” and “string sign” (smallbowel series)
• GIARDIASIS

  RA: Dilation of intestine, with thickening of circular folds.
• MECKEL’S DIVERTICULUM

  RA: large diverticulum of ileum, proximal to ileocecal valve
• NEOPLASM

  R.A: “apple-core” or napkin-ring” sign (BE)
• SPRUE

  R.A: “feathery” appearance