多原发性口腔癌系指同一病员在口腔两个以上部位同时或先后发生同样类型的癌肿而言。该病在1974年以后才引起重视。据统计已有3万余例,口腔多原发癌约占3.6～21%,约占全部癌瘤的0.2～13.1%。我科十年来诊治单纯口腔癌189例,发现多原发性癌2例,特报告如下:例1:患者,男性,63岁,农民,住院号A-0009542。主因左颊后部长一肿物5个多 Multi-primary oral cancer refers to the same type of cancer in which two or more parts of the oral cavity occur simultaneously or one after another in the same patient. The disease has only attracted attention since 1974. According to statistics, there are more than 30,000 cases, accounting for about 3.6 to 21% of primary oral cancer, accounting for about 0.2 to 13.1% of all cancers. In the past ten years, our department has diagnosed and treated 189 cases of oral cancer alone and found two cases of multiple primary cancer. The special report is as follows: Case 1: Patient, male, 63 years old, farmer, hospital number A-0009542. Mainly due to the left cheek after the Minister a mass more than 5