Hilar tuberculosis in a patient with osteosarcoma.

Introduction Pulmonary metastases are the commonest sites of distant metastases in osteosarcoma. Although cytotoxic chemotherapy after primary surgical treatment of limb osteosarcoma is used widely in an attempt to eradicate micro-metastases, hopes of cure once clinically evident metastases are present are limited. However, long survivals have been reported following resection of pulmonary metastases (Huang, Takita and Douglass, 1978). In cases when thoracotomies have been done for the removal of metastatic disease in patients with a variety of primary neoplasms, non-malignant conditions masquerading as pulmonary metastases have been found (Cahan, Shah and Castro, 1978).