Gynaecology & Obstetrics A child is diagnosed with osteosarcoma based on sunray appearance on X-ray. This is because of: A Calcification along the periosteum B Calcification along the blood vessels C Periosteal reaction D Soft tissue invasion 💡 Explanation A child is diagnosed with osteosarcoma based on sunray appearance on X-ray. This is because of: ✓ Correct Answer: C. Periosteal reaction