The benign osteoblastoma is an uncommon bone tumor. It is a benign but actively growing neoplasm that must be differentiated from more aggressive bony lesions. A review of the literature indicates that 14% of benign osteoblastomas are located in the head. The clinical, radiologic, and pathologic features and treatment of the benign osteoblastoma are discussed. In addition, the third case of a benign osteoblastoma of the paranasal sinuses, and the first of the maxillary sinus, is described.
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