[Kidney involvement in trophoblastic disease (chorionepithelioma)].

Renal involvement in chorionepithelioma is attributed to tumor destruction and metastases to the kidneys. A rare case of secondary paraneoplastic nephropathy manifesting as nephrotic syndrome in the presence of renal metastases is described. Metastatic lesion of the lungs provoked spontaneous pneumothorax. It is not easy to detect chorionepithelioma and related paraneoplastic nephropathy. Therefore, special attention should be given to puerperants with unusual clinical presentation of nephrotic syndrome, with bloody expectorations. In the above cases chorionepithelioma must not be excluded.