MKI67 and clear cell adenocarcinoma: Labeling index was significantly lower for chromophobe tumors Ki-67=2.1±1.05% (median=1.83%); MCM-2=5.14±3.29% (median=4.35%) as compared to clear cell carcinomas Ki 67=21.43±16.39% (median=14.78%);MCM-2, 34.53±20.85% (median=27.55%), although no significant relationship was found between papillary Ki-67=15.06±14.25% (median=10.79%); MCM-2=25.36±19.00% (median=21.43%) and clear cell carcinomas (Table-2A).