Study: Whole body bone scan Radiopharmaceutical: Tc-99m MDP 20mCi Clinical history: RUL lung cancer s/p OP The image shows: 1. Small hot spots in the right ribs, which could be due to trauma or fracture. 2. Mildly increased tracer uptake in the left knee, which could be due to degenerative change or arthritis. 3. There is no obvious osteoblastic bone metastases detected. Impressions: 1. No obvious osteoblastic bone metastases detected. 2. Trauma or fracture in the right ribs. 3. Degenerative change or arthritis in the left knee. Follow-up and clinical correlation are recommended.