[Conservative treatment with high anastomosis in duplications with lesions of the upper kidney pelvis].

High anastomoses (ureteropyelic or uretero-ureteral) were performed in 14 patients for either ectopic ureter (7 cases) or uterocele (7 cases). This simple operation (one benign complication) allows conservation of a still functioning upper segment. In cases of ureterocele, aspiration of the latter eradicates it but the high operation does not treat the possibly associated reflux. Certain secondary operations are therefore necessary (2 of the 7 cases). Means for assessing upper segment function (particularly renal scan) are discussed, the presence of function justifying the conservation of this segment even if it is dysgentic and sometimes the site of nodular renal blastema. The respective indications for high anastomosis and total bladder surgery are discussed.