Osteoid osteoma is a benign primary bone tumor containing a small region of abnormal osteoid with osteoblasts and variable surrounding reactive bone. Osteoid osteoma accounts for approximately 11% of all benign tumors.1 The majority of osteoid osteomas are monofocal with a single nidus. The orthopedic and radiology literature is scattered with several case reports of multicentric osteoid osteom...

Background and Objectives: Osteomas are the most common benign tumors of nasal cavity paranasal sinuses (PNSs). In this study, clinical features imaging findings were analyzed in patients with osteoma confirmed by ostiomeatal unit (OMU) computed tomography (CT) PNS CT, surgical treatment performed at our hospital was introduced.Methods: The Severance Clinical Research Analysis Portal (SCRAP) se...

Osteoid osteoma is a benign bone tumor that when located on the base of the coracoids process of the scapula is very rare and diagnosis and treatment is often delayed because of its rarity. Almost any bone can be involved, but half of cases involve the femur or tibia. The radiologic features of osteoid osteoma are well known, but these tumors may present with unusual features and be easily misd...