[Imposing "calcium milk" lithiasis in giant hydronephrosis].

The authors report a quite unusual case of "milk of calcium renal Stone" in unilateral giant Hydronephrosis. Radiographic, sonographic, intravenous urographic and TC aspects are described and prominence il given to morphostructural information obtained through digital image techniques of pyeloureteral zone junction and of "milk of calcium renal Stone". The authors discuss the pathogenesis of the renal Stone type and emphasize the convenience of investigative acts to clear up the ethio-pathogenetic role of pyeloureteral infections.