[The role of venous drainage in uro-genital pathology].

Problems of venous hemodynamics underlie several uro-andrological conditions, such as idiopathic or acquired varicocele, erective impairment from venous leakage, intercaval collateral pathways induction from venous obstructive processes (thrombosis, embolism, external caval compression). Particularly, the renal venous thrombosis seems to be ascribed to a primary membranous glomerulo-nephritis rather than to a reverse mechanism. Moreover, the caval obstruction proximal to the hepatic confluence can induce a portal system's impairment, such as in the Budd-Chiari syndrome. Some diagnostics (US, RX-CT, RM-CT) afford to day a better evidence of the underlying venous imbalances in the aforesaid conditions.