The investigators will retrospectively collect 30 cases of adrenal carcinoma, 30 cases of adrenal adenoma and 10 cases of normal adrenals. All specimens are preserved with formalin. The investigators will re-review the WIESS criteria and all samples will be analyzed for the index labeling of the following proliferation biomarkers: MCM3, MCM2, KI-67, P53, NEUROPILIN -1, METALLOTHIONEIN, SEMAPHORIN-3A. The investigators will examine if there is any correlation between the labeling index of each biomarker, WIESS criteria and prognosis of the tumor.