NCIt synonyms : Familial Multilocular Cystic Disease of the Jaws; Familial Fibrous Dysplasia of the Jaws;
NCIt definition : A rare autosomal dominant inherited disorder usually caused by mutations in the SH3BP2
gene. It is characterized by a prominent lower part of the face due to bilateral replacement
of the mandibular or maxillary bones by lesions. The lesions contain osteoclast-like
cells admixed with spindle-shaped mononuclear stromal cells. With time, the lesions
become more fibrotic and less osteoclast-rich.;