ABSTRACT Superficial bladder carcinoma particularly grade 2 is a heterogeneous widespread group comprising both non- invasive (pTa) and invasive (pTI) tumors. Therefore, the study of its proliferative activity by immunohistochemical detection of Ki-67 antigen is necessary to highlight the biologic behavior of such lesion. This study was performed on sixty (60) retrospective cases of primary superficial bladder carcinomas (pTa and ... إقراء المزيد