Collagenous gastritis
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Synopsis
Pediatric-onset collagenous gastritis – Presents with abdominal pain and severe anemia with an inflamed and/or nodular stomach and normal-appearing colon. There is no known etiology.
Adult-onset collagenous gastritis – Associated with collagenous colitis and presents with voluminous nonbloody diarrhea. Etiology is possibly secondary to autoimmune, infectious, and medication-induced causes.
Esophagogastroduodenoscopy (EGD) is important for diagnosis and to rule out other causes of symptoms.
Codes
ICD10CM:K52.9 – Noninfective gastroenteritis and colitis, unspecified
SNOMEDCT:
711499009 – Collagenous gastritis
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Differential Diagnosis & Pitfalls
- Acute gastroenteritis
- Viral illness
- Inflammatory bowel disease (eg, ulcerative colitis)
- Crohn disease
- Peptic ulcer disease
- Food protein-induced enterocolitis syndrome
- Helicobacter pylori gastritis
- Cholangitis
- Hepatitis (eg, hepatitis A, B, C)
- Biliary obstruction
- Acute cholecystitis
- Cholelithiasis
- Acute pancreatitis
- Chronic pancreatitis
- Pancreatic cancer
- B-cell lymphoma
- Gastric cancer
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Last Reviewed:12/17/2017
Last Updated:12/17/2017
Last Updated:12/17/2017