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
In a young boy, x-ray of the upper end of the tibia shows a lytic lesion. The least likely diagnosis is-
assistant
The correct answer is  Giant cell tumour occurs between 20-40 years (not in a young child)
Telangiectatic type of osteosarcoma, solitary bone cyst and tuberculosis can cause an osteolytic lesion in a child.