Aggressive pituitary tumors and pituitary carcinomas : from pathology to treatment
Aggressive pituitary tumors (APT) and pituitary carcinomas (PC) are heterogeneous with regard to clinical presentation, proliferative markers, clinical course and response to therapy. Half of them show an aggressive course only many years after the first apparently benign presentation. APT and PC share several properties, but Ki67 index ≥10% and extensive p53 expression are more prevalent in PCs.