familial tumoral calcinosis
Tumoral calcinosis is a phosphocalcic metabolism anomaly, particularly among younger age groups and characterized by the presence of calcified masses in the juxta-articular regions (hip, elbow, ankle and scapula) without joint involvement. Histologically, lesions dysplay collagen necrobiosis, followed by cyst formation and a foreign-body response with calcification Two forms of tumoral calcinosis have been described: normocalcemic tumoral calcinosis and familial tumoral calcinosis.