[Multilocular cystic nephroma in an adult: diagnostic and therapeutic strategy]

The authors report two clinical cases of cystic nephroma in adults observed in the department over the last 10 years. The nonspecific clinical findings and the poor contribution of imaging examinations make this rare disease difficult to diagnose. Only histological examination can confirm the diagnosis and eliminate multilocular cystic renal carcinoma or necrotic pseudocystic carcinoma. Based on a review of the literature, the authors emphasize recent pathophysiological and immunohistochemical data that could improve the management of this benign disease, in which malignant transformation is also possible.