Osteomesopyknosis: a case report and review of sclerosing bone disorders

We present a case of osteomesopyknosis, a nonmalignant sclerosing bone dysplasia of the axial skeleton, with unknown etiology and unknown prevalence. We studied a 49-year-old female who suffered from back and pelvic pain. Her history was obtained, a physical examination performed, and the laboratory results and imaging diagnostics were studied to describe her disease. A 49-year-old, perimenopausal female suffered excruciating, intermittent, dull back and pelvic pain for 1.5 years. Nonmalignant blastic bone lesions along her spine and pelvis were discovered on computed tomography (CT) and confirmed by magnetic resonance imaging (MRI) and bone scans. Other metabolic/endocrine conditions were ruled out. Her son also has similar symptoms, and corresponding changes were observed on his vertebrae MRI. Both were diagnosed with osteomesopyknosis. Osteomesopyknosis is a rare, autosomal dominant condition characterized by nonmalignant osteosclerosis restricted to the axial skeleton. The disease may produce chronic low-grade back pain in the thoracic and lumbar regions.