Focal osteoporotic bone marrow defects usually appears as asymptomatic radiolucencies in the edentulous mandibles of middle aged women. Their etiology is unclear and due to the radiologic properties histopathologic examination is the only way to achieve a correct diagnosis. In this article a case of focal osteoporotic bone marrow defect in a 67 old female is discussed with its clinical, radiologic and histopathologic features
