Clinicopathological Study of Gastric Malignant Lymphoma

Eiji Sakamoto, Toshifusa Nakajima, Keiichiro Ota, Syo Ishihara, Shinichi Mizuno, Yosuke Yamaguchi, Mikinori Sato, Mitsumasa Nishi, Hiroshi Kato*, Akio Yanagisawa*

Department of Surgery and Pathology*, Cancer Institute Hospital

Ninety-five cases of gastric malignant lymphoma were studied clinicopathologically. Malignant lymphoma which was confined to the stomach and regional lymph nodes was designated primary gastric malignant lymphoma. Among the 95 cases, 77 were found to be of primary gastric lymphoma, and 18 cases were systemic. The accuracy of preoperative diagnosis was 93.9% for the last 10 years. Macroscopically, the excavated type was the most frequent in both primary and systemic form. The superficial type was not found in systemic malignant lymphoma. The frequency of lymph node metastasis when the depth of invasion was sm (27.3%) was higher than that of gastric cancer (21.1%), but when the depth of invasion was pm or deeper, the frequency was lower than that of gastric cancer. The estimated 5-year survival rates were 87.4%, 50.0%, 21.4%, and 0%, respectively, for Ann Arbor Stages IE, IIE, III and IV. We believe complete resection of the primary lesion with dissection of the regional lymph nodes followed by adjuvant chemotherapy is important in the management of gastric malignant lymphoma.

Key words
gastric malignat lymphoma, gastric lesion of systemic malignant lymphoma

Reprint requests
Eiji Sakamoto Department of Surgery, Cancer Institute Hospital
1-37-1 Kami-Ikebukuro, Toshima-ku, Tokyo, 170 JAPAN

Accepted
December 10, 1991

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