P_(53) protein expression might be hopeful to become a parameter for distinguishing benign from ma- lignant nasal tumors, and the histopathologic grading of nasal squamous cancer is probably correlat- ed to the DNA ploidy of the cancer cells.

• 结论：P_（53）基因蛋白表达能区分鼻良恶性肿瘤及鼻恶性肿瘤病理组织学分级，同时还与DNA倍体相关。