胃底腺領域のⅡc型胃癌類似早期胃悪性リンパ腫の1例

Early Malignant Lymphoma Resembling Type Ⅱc Early Cancer in the Fundic Gland Region, Report of a Case

要旨　9か所の病巣を有する早期胃悪性リンパ腫を経験したので報告する．組織型はdiffuse small cleaved cell typeで深達度はsm，リンパ節への転移はなかった．この症例は臨床的にはⅡc型早期胃癌との，組織診断ではRLHおよび慢性胃炎との鑑別が問題となった．

　It is not infrequently required that malignant lymphoma of the stomach be differentiated from stomach cancer. We report here a case of malignant lymphoma at an early stage in the fundic gland region.

　Since there was no clinical characteristics typical for malignant lymphoma, the differential diagnosis was difficult. Differentiation from RLH or chronic gastritis was not easy even with histological examination of biopsy specimen. Pathological findings of resected specimen are as follows:

　1) Multiple malignant lymphoma of the stomach;diffuse small cleaved cell type (diffuse medium cell type by LSG classification).

　2) Nine lesions present (sm depth invasion).

　3) No metastasis to lymph nodes.