HILOTORAX - accumulation of lymph in the pleural cavity. It occurs as a result of damage to the wall of the thoracic duct during thoracic operations, much less often with injuries of the chest, as well as due to malformations of the thoracic duct, inflammatory and neoplastic processes of various organs of the thoracic cavity. Clinical manifestations are caused by compression of the lung and displacement of the mediastinum with symptoms of respiratory failure and impaired hemodynamics. The treatment is carried out in the hospital. Showing pleural puncture or drainage of the pleural cavity with removal of lymph, parenteral nutrition. With a long process, it may be necessary to have surgery - intrathoracic ligation of the damaged duct.