<prompt> True statementss regarding osteoid osteoma isare -a Malignantb MC bone involvement-tibiac Local excision or curettage cured Bone pain relieved by aspirine X-ray shows : density surrounding radiolucent lesionbdeadeacebce  <response>: Osteoid osteoma is a benign tumor.Most common site involved is diaphysis of Tibia.Pain of osteoid osteoma is relieved by salycylates or other NSAIDs.X-ray shows small radiolucent area nidus surrounded by dens sclerosis.The only treatment is wide en block excision along with internal fixation with or without bone grafting. 