Tumoral calcinosis of the knee

Abstract

Tumoral calcinosis or Teutschlander syndrome is a rare and benign condition characterized by the presence of calcified masses around the hip, elbow, and less frequently feet, ankles and knees. It is believed that there is a genetic alteration in GALNT3 and FGF23 which regulate the renal absorption of phosphate. Usually it is an asymptomatic lesion and occasionally it produces symptoms of compression to peripheral tissues. Imaging permits the diagnosis. There is no successful medical treatment and surgical excision is recommended although recurrences are frequent