<unk>  is a cutaneous condition characterized by cutaneous or subcutaneous ossification. According to the<unk>  Association: It is associated with GNAS.
Progressive osseous heteroplasia
Microdamage in bone
Bizarre parosteal osteochondromatous proliferation
Congenital vertebral anomaly
Metastatic calcification
Intermittent hydrarthrosis
Arterial calcification due to CD73 deficiency
Heterotopic ossification