PRIMARY PRIMITIVE NEUROECTODERMAL TUMOR OF THE KIDNEY - CASE-REPORT AND REVIEW OF THE LITERATURE

Small cell tumors are a heterogeneous group of neoplasms with similar morphologic features. They include lymphomas, carcinomas with variable degrees of neuroendocrine differentiation, rhabdomyosarcomas, and neu roblastomas. The authors describe a rare case of primitive neuroectode rmal tumor (PNET) located in the kidney that was thoroughly studied wi th modern diagnostic techniques, including expression of protein of a genetic translocation consistent with t(11;22). The literature on smal l cell tumors of the kidney, with special emphasis on PNET, is reviewe d.