Abstract
Abstract: Described is a 59 year old Japanese man With malignant lymphoma involving the stomach, duodenum, terminal ileum, colon and rectum, who developed early gastric carcinoma. Repeated gastroduodenoscopy revealed various appearances of the gastrointestinal involvement in malignant lymphoma, such as giant folds, polypoid lesions, and ulcerations, in addition to a depressed lesion of early gastric carcinoma. Colonoscopy also showed multiple polypoid lesions throughout the large bowel. Though the gastrointestinal involvement in malignant lymphoma is not rare, diffuse multiple polypoid lesions in the entire large bowel as seen in our case have rarely been endoscopically described.The coexistance of malignant lymphoma and gastric carcinoma in our case might be only a coincidence, though some reports of an increasing incidence of second tumors in patients with malignant lymphoma have been published. Further consideration will be needed as to the relationship between malignant lymphoma and the occurence of a second malignancy.
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