Osteoid Osteoma eMedicine Radiology

Description: Synonyms and related keywords: sclerotic bone island, benign bone neoplasm, benign skeletal neoplasm, bone lesion, bone neoplasm, skeletal lesion, skeletal neoplasm, cortical bone sclerosis, endosteal bone sclerosis, bone sclerosis, osteoblastic rimming, osteoblastoma, giant osteoid osteoma
Author: Ali Nawaz Khan, MBBS, LRCP, FRCS, FRCP, FRCR, Chairman of Medical Imaging, Professor of Radiology, NGHA, King Fahad Hospital, King Abdulaziz Medical City, Riyadh, Saudi Arabia
Coauthor(s): Muthusamy Chandramohan, MBBS, DMRD, FRCR, Special Registrar, Department of Radiology, Manchester Radiology;
Ian Turnbull, MD, Lecturer, Department of Radiology, University of Manchester; Consulting Neuroradiologist, Hope Hospital, Salford, Manchester and North Manchester Hospital;
Sumaira Macdonald, MBChB, MRCP, FRCR, PhD, Lecturer, Sheffield University Medical School; Endovascular Fellow, Sheffield Vascular Institute
Osteoid osteoma is a benign skeletal neoplasm of unknown etiology that is composed of osteoid and woven bone. The tumor is usually smaller than 1.5 cm in diameter. Osteoid osteoma can occur in any bone, but in approximately two thirds of patients, the appendicular skeleton is involved. The skull and facial bones are involved exceptionally.