2014 Volume 62 Issue 3 Pages 179-184
A 70-year-old man was referred to our hospital because of epigastralgia. Abdomal CT revealed an omental abscess. A polypoid lesion was recognized in the gastric body on upper gastrointestinal endoscopy, which was performed to investigate the cause of the abscess. Histopathology of the biopsy of the lesion showed granulation tissue. We decided that conservative treatment wouled be ineffective and performed resection of the omental abscess. Follicular lymphoma was suspected from the histopthological findings of the specimen of the abscess. After operation, biopsy of the gastric lesion was performed again. Histopathology showed infiltration of CD10 and Bcl-2 positive lymphocytes. FDG-PET revealed an abnormal accumulation in the stomach and regional lymph nodes. From the overall findings, gastric malignant lymphoma (follicular lymphoma) was diagnosed. We reported a case of gastric malignant lymphoma with omental abscess with a review of the literature.
