PTEN在皮肤基底细胞瘤和鳞状细胞癌中的阳性表达率均低于正常皮肤，有统计学意义（p分别<0.05和0.001）；
The positive expression rate of PTEN was lower in basal cell carcinoma and squamous cell carcinoma than in normal skin, with a statistically significant difference (p<0.05 and p<0.001 respectively).
结果：基底细胞癌、鳞状细胞癌和恶性黑色素瘤仍是常见的皮肤恶性肿瘤，占本组198例患者的85.6%，共169例。
Results Basal cell caicinoma, squamous cell caicinoma and malignant melanoma were still common malignant tumor on skin, and they occupied 85.6%(169/198) in this group.
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