Chylothorax in a dog with pulmonary lymphangiosarcoma

Lymphangiosarcoma of the pulmonary pleura was found to be the cause of pers istent chylothorax in an eight-year-old, intact male golden retriever. Afte r a two-month course of medical management, a lymphangiogram and thoracic d uct ligation were performed with the objective of decreasing further effusi on. At surgery, gross lung pathology was biopsied and yielded a histopathol ogical diagnosis of pulmonary pleural lymphangiosarcoma. A relatively rare tumor, lymphangiosarcoma of the pulmonary pleura has not previously been do cumented as a source of chylothorax in the dog.