患者李某某 ,女 ,6 0岁 ,农民。发现口底无痛性包块 5个月 ,于 1998年 12月 2 0日来院诊治。体检 :全身各系统检查及实验室检查均未见异常。颜面部对称 ,张口不受限。6 +2对应的口底粘膜下可见一 3 0ｃｍ× 4 0ｃｍ隆起 ,表面光滑 ,质中等 ,无压痛 ,活动 ,粘膜表面色泽正常。舌 Patient Lee Moumou, female, 60 years old, farmer. Pain was found in the floor of the mouth for 5 months, on December 20, 1998 to hospital for treatment. Physical examination: The whole body system examination and laboratory tests were no exception. Facial symmetry, mouth is not limited. 6 +2 corresponding to the bottom of the mucosa visible a 3 0cm × 4 0cm uplift, smooth surface, medium quality, no tenderness, activity, normal mucosal surface color. tongue