Which of the following organ is usually the first site of metastasis in a case of osteosarcoma of young female?: (A) Kidneys, (B) Lungs, (C) Liver, (D) CNS
Answer is B. Lung is the earliest site for metastasis in osteosarcoma. A chest X-ray should be done to detect the same. CT scan may be required in cases where the metastatic lesion is unclear on chest X-ray. Reference: Maheshwari; Essential Ohopaedics; Page no: 240