system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
A 69-year-old man comes to the physician because of a 2-month history of severe right hip pain. The pain is worse at night. He has chronic headaches and back pain for which he takes vitamin D, calcium supplements, and ibuprofen. Examination shows hip tenderness and mild sensorineural hearing loss. X-ray of the hip shows a radiolucent lesion in the ilium with a moth-eaten appearance, wide transition zone, and an aggressive periosteal reaction. Wide excision of the lesion is performed. A photomicrograph of a section of the lesion is shown. Which of the following is the most likely diagnosis?
assistant
Osteosarcoma