Osteomesopyknosis is a nonmalignant sclerosing bone dysplasia of the axial skeleton. Osteosclerosis is limited to the axial skeleton, pelvis, and proximal long bones. The condition is often an incidental radiologic finding in a young adult complaining of back pain. Patients have normal height and laboratory examinations are within normal limits (summary by Yao and Camacho, 2014). [from
OMIM]