ASSESSING THE RESECTABILITY OF WILMS-TUMO RS IN CHILDREN

Over the last ten years 62 children were operated for renal tumours. T he therapeutic aim in Wilms' tumours is complete macroscopic resection of the primary tumour, assessing resectability as accurately as possi ble. Overestimating surgical possibilities may lead to intraoperative rupture of the tumour (three cases), while overestimating local tumour extent may result in too much preoperative chemotherapy, which result ed in the life-threatening complication of venous occlusive disease of the hepatic veins (VOD) in three infants. The assessment of resectabi lity may become particularly problematic in bilateral (six cases) or m ultifocal Wilms' tumours (two cases), and in nephroblastomatosis (two cases), i.e. the persistence of embronal renal tissue, a facultatively precancerous lesion, which requires quarterly sonographic controls an d which induced a second metachronous contralateral Wilms' tumour in o ne child.