Fibrous dysplasia is categorized by how many bones it affects:
Because the mutation happens after fertilization, only some cells carry it. This results in a patchy, variable distribution of the disease across the body. Clinical Classification fibrous dysplasia of bone
Symptoms vary widely based on the location and extent of the lesions: Fibrous Dysplasia - StatPearls - NCBI Bookshelf Fibrous dysplasia is categorized by how many bones
The condition stems from a in the GNAS gene . This mutation is not inherited from parents but occurs spontaneously during early embryonic development. fibrous dysplasia of bone