口腔原发性恶性黑色素瘤是一种少见的肿瘤,恶性程度高,预后较皮肤恶性黑色素瘤差,易转移。由于组织形态结构的多样性,易造成病理诊断上困难,为此,本文总结了20例口腔原发性恶性黑色素瘤的临床与病理资料,分析如下。1材料与方法收集湖南省肿瘤医院1984～2000年之间收治的20例存 Oral primary malignant melanoma is a rare tumor with a high degree of malignancy and a worse prognosis than skin malignant melanoma. Due to the diversity of tissue morphology, easy to cause pathological diagnosis difficult, this paper summarizes the clinical and pathological data of 20 cases of primary oral malignant melanoma, the analysis is as follows. 1 Materials and Methods Tumor Hospital collected from 1984 to 2000 between 20 admitted to the deposit