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Online edition:ISSN 2434-3404

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Mucosa-Associated Lymphoid Tissue (MALT) Lymphoma of the Rectum: Report of Two Cases

We have treated two patients with low-grade B-cell lymphoma of mucosa-associated lymphoid tissue (MALT) arising in the rectum. A 70-year-old female with anal bleeding underwent local excision of a rectal polypoid mass (3.0 X 2.3 X 1.3 cm) transanally to preserve the sphincter muscle. Pathological findings showing partial invasion to the muscularis propria were indicative for prophylactic combinationchemotherapy (1 X CHOP). A 72-year-old male in whom positive occult blood was detected underwent a low anterior resection for three aphthoid ulcers (1.0-1.5 cm in diameter, submucosal invasion). Radically resected tumors in early stages should require no further treatment. However, cases with tumors in advanced stages should have elective postoperative therapy, such as chemotherapy and/or irradiation. Since recurrences (15%) of initially low-grade MALT lymphoma have been reported, these two cases should undergo periodic examination of the gastrointestinal tract at regular intervals over five years.

Author
Yamamoto Y, et al
Volume
22
Issue
1
Pages
41-46
DOI
10.11482/KMJ-E22(1)41-46.1996.pdf

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