Altered Rb, p16, and p53 expression is specific for porocarcinoma relative to poroma

Abstract excerpt

BACKGROUND: Porocarcinomas are rare aggressive carcinomas that harbor tumor suppressor mutations and must be distinguished from benign entities such as poromas. METHODS: To determine whether altered expression of these genes was diagnostically informative, we examined p53, Rb, and p16 staining patterns in 15 poromas and 16 porocarcinomas. RESULTS: Poromas consistently displayed diffuse strong expression of Rb in...

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