Experiences of postoperative chylothorax in children

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Abstract
Eight cases of postoperative chylothorax in children are discussed. The age of the patients varied between 5 hours and 18 months. Chylothorax was diagnosed between 3 and 14 days after operation. In 6 cases chylothorax was certainly due to damage to the thoracic duct, or other big lymph vessels in the lungs or mediastinum. These patients had no typical pulmonary changes before chylothorax developed. In 2 cases there was probably no damage to the lymph vessels, but the venous pressure in the upper part of the body was elevated by constriction of the superior caval vein. The anatomical prerquuisites for chylothorax in these cases is discussed. In these patients, before chylothorax, pulmonary changes appeared in the radiograph interpreted as widened lymph vessels and caused al altered lymph flow at the periphery. If pulmonary changes of this kind appear in patients with elevation of pressure in the superior caval vein, this may be a sign that chylothorax may develop. The importance of early diagnosis is stressed. Drainage of the pleura with continuous suction has proved to be the therapy of choice. Direct operation has not been necessary in any of our cases.