We report a case of thoracic wall myositis ossificans (MO) located anterior to the ninth rib, causing right lower thoracic-upper abdominal pain. The diagnosis was based on the findings of ultrasonography (US) and computed tomography (CT). Numerous disorders can be included in the differential
Introduction: Fibrodysplasia ossificans progressiva (FOP) is a disorder causing progressive heterotopic ossification of muscles, tendons, and ligaments. Invasive procedures such as surgery should be avoided, because physical stimulation