ABSTRACT
Hydrothorax is a rare or late complication of peritoneal dialysis (PD). As often patients are asymptomatic or with mild shortness of breath, hydrothorax is overlooked in many cases. The patient is 72-years old female who was hospitalized in 2005 with clinical and laboratory signs of end stage renal disease (ESRD). Peritoneal catheter was implanted by laparoscopic technique. First postimplantation washouts didn't provoke any symptoms. Shortness of breath appeared on the second day of CAPD and worsened next five days accompanied with right-sided chest pain. Chest X-ray showed massive right-sided pleural effusion which was complitely evacuated by thoracentesis. The laboratory findings showed simmilar glucose levels in dialysate and pleural fluid and normal glucose in serum. The treatment with CAPD was discontinued and later haemodialysis (HD) was commenced.