Collagenous gastritis
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
K52.9 – Noninfective gastroenteritis and colitis, unspecified
SNOMEDCT:
711499009 – Collagenous gastritis
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Last Updated:03/03/2024