A 59-year-old male with nephritic syndrome admitted to our hospital due to intractable shortness of breath as a cause of recurrent massive hydrothorax. The chest X-ray examination showed marked pleural effusion over the fight lung field with leftward shift of the mediastinum. The left side of the chest was clear and ascites was noted. Chyloperitonum and chylothorax were verified through lipoprotein electrophoresis of fluids. A lung scan was performed using Tc-99m sulfur colloid injection to the peritoneal cavity and it revealed transdiaphragmatic communication of chylous ascites to the plural cavity. The patient was successfully managed by throacoscopic pleurodesis with tetracycline.