[Idiopathic Bilateral Chylothorax which Presented Difficulty in Treatment].

A 57-year-old woman was referred to our hospital because of bilateral chylothorax. She was previously treated with dietary restriction and pleurodesis resulting in failure. She did not have diseases causing chylothorax, and was diagnosed as having idiopathic chylothorax. To control chylothorax, 2 surgical operations to ligate bilateral thoracic ducts, right pleurodesis, and 2 times of left pleurodeses was necessary.