| A rare primary bone dysplasia characterized by the association of multiple epiphyseal dysplasia with macrocephaly and dysmorphic facial features (such as frontal bossing, hypertelorism, flat malar region, low-set ears, and short neck). Patients are of normal stature and present with joint swelling and genu valgum. Additional reported manifestations include clinodactyly, spindle-shaped fingers, and pectus excavatum. |