Unilateral hydronephrosis and recurrent endometrial stromal sarcoma with review of the literature.

In this case we present a woman with arterial hypertension. Further examination showed an unilateral hydronephrosis caused by extrinsic compression. A tumoral mass, invading the caval inferior vein and the renal vein, is the very origin of the compression. This mass is a recidive of an endometrial stromal sarcoma for which she had a hysterectomy in 1984.