Cystic nephroma in an adult - a rare cystic renal lesion. Case report

Muitilocular cystic nephroma represents an uncommon benign renal tumor, whi ch has its origin in metanephrogenouos blastema. We report on a 40-year-old female who was treated by tumor enucleation. Problems with differential di agnosis, classification and pathogenesis are discussed. Because its difficu lt to distinguish multilocular renal cyst from malignant lesion on the basi s of radiologic findings alone, surgical intervention is the only effective method to secure diagnosis. Regular monitoring by noninvasive techniques, e.g. periodic ultrasound, of the remaining renal unit is recommended.