Teutschländer Disease Mimicking Extraskeletal Osteochondroma- Dilemma In Diagnosis And Decision Making

Tumoral calcinosis (TC) or Teutschländer disease is a rare entity in which there is deposition of calcium salts in periarticular soft tissues. It is a benign metabolic condition of unknown aetiology. It is most commonly seen around large joints such as the hip, knee and elbow. It may be associated with calcium and phosphate metabolism disorders. Extraskeletal osteochondromas are benign lesions which are slow-growing. These can occur around the small joints of the hands and feet and cause displacement of digits. We report a case of a nine-year-old girl presenting with a recurrent swelling around the left little toe causing displacement of the toe. The clinical and radiological diagnosis suggested a possibility of extraskeletal osteochondroma, whereas the final histopathological examination (HPE) confirmed a diagnosis of Teutschländer disease or tumoral calcinosis.