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Osteoma cutis is the formation of normal bone in the skin. Primary osteoma cutis occurs de novo, whereas the secondary type develops in association with the underlying inflammatory, tumorous or traumatic conditions. Primary osteoma cutis is also associated with Albright’ s hereditary osteodystrophy (AHO), which can include hypocalcae mic-type pseudohypoparathyroidism( also known as pseudo- hypoparathyroidism type Ia) or normocalcaemic-type pseudohypoparathyroidism (also known as pseudopseudohypoparathyroidism). We describe a case of osteoma cutis in a 7-year-old boy who had cutaneous, biochemical and phenotypic features of pseudohypoparathyroidism type Ia and AHO.
Osteoma cutis is the formation of normal bone in the skin. Primary osteoma cutis occurs in novo, but the secondary type develops in association with the underlying inflammatory, tumorous or traumatic conditions. Primary osteoma cutis is also associated with Albright’s hereditary osteodystrophy (AHO ), which can include hypocalcae mic-type pseudohypoparathyroidism (also known as pseudo- hypoparathyroidism type Ia) or normocalcaemic-type pseudohypoparathyroidism (also known as pseudopseudohypoparathyroidism). We describe a case of osteoma cutis in a 7-year-old boy who had cutaneous , biochemical and phenotypic features of pseudohypoparathyroidism type Ia and AHO.