[Hydrothorax as a complication of subclavian vein catheterization. Pathogenetic mechanism and description of a clinical case].

We report a case of possible detouring and malfunctioning of the left subclavian catheter in the homolateral internal mammary vein or of perforation form its tip of the wall of the left innominate vein. The tip of the catheter was rigid and sharp, may be the contractions of the heart or turbulent flow impinged it against the vein wall and have enhanced the perforation. The result was a hydrothorax that allowed a severe cardiac simile tamponed syndrome. The pathophysiology was also discussed.