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What is Ganga Ram a 19 years old male with a sho history of pain in the right groin that worsens at night time and has a small circumscribed sclerotic swelling over diaphysis of femur. Likely diagnosis is: and explain in detail?
Osteoid Osteoma - Night pain relieved on taking salicylates (NSAID) - Coical tumor "thickened coex" (CT) - In diaphysis shows Nidus- Lytic center with sclerotic margin Rx: Radio-frequency Ablation -Preferred X-ray CT scan