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[Attempt at defining a pyelocaliceal system. Application to partial nephrectomy].

A comparative study of the pyelo-caliceal segmentation of the kidney and the arterial intra-parenchymal segmentation has been realised from the analysis of 60 plastic molds of the pyelo-caliceal system from which 42 were also molds of the arterial and venous systems (Fig. 8). These molds were obtained through injection with Rhodopas, then corrosion by hydrochloric acid. Their analytical study concludes to the existence of a pyelo-caliceal systematization and particularly of an intra-parenchymal arterial segmentation that corresponds to the pyelo-caliceal arborization.