Frontofacionasal dysplasia

Frontofacionasal dysplasia (also known as frontofacionasal dysostosis) is an extremely rare congenital malformation syndrome primarily affecting the development of the face, skull, and nose. It was first described by Gollop in 1981. The condition is characterized by a distinctive combination of craniofacial anomalies including blepharophimosis (narrowing of the eye opening), S-shaped palpebral fissures, lagophthalmos (inability to fully close the eyelids), eyelid colobomas, midface hypoplasia, a broad nasal bridge with bifid nose or midline nasal cleft, and cranium bifidum occultum (a defect in the skull bones). Additional features may include hypertelorism (widely spaced eyes), lip pits, cleft lip and/or palate, and anterior cranium bifidum. The facial features are typically evident at birth. The condition primarily affects the craniofacial skeletal system, the eyes, and the nasal structures. Some patients may also present with lipomas or dermoid cysts in the frontonasal region. Intelligence is generally reported as normal in affected individuals, though the severity of structural anomalies can vary. Only a very small number of cases have been reported in the medical literature worldwide, making it one of the rarest craniofacial dysplasias known. There is no specific cure for frontofacionasal dysplasia. Management is supportive and symptomatic, typically involving a multidisciplinary team including craniofacial surgeons, ophthalmologists, and otolaryngologists. Surgical interventions may be required to correct cleft lip/palate, nasal deformities, eyelid abnormalities, and skull defects. Treatment is individualized based on the specific malformations present in each patient, and multiple staged surgeries may be necessary throughout childhood.

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