Cleft palate-lateral synechia syndrome

Cleft palate-lateral synechia syndrome, also known as cleft palate-lateral alveolar synechiae syndrome or Fuhrmann-Rieger-de Sousa syndrome, is an extremely rare congenital malformation syndrome characterized by the combination of cleft palate and lateral synechiae (fibrous bands or adhesions) connecting the upper and lower jaws. These synechiae typically extend from the maxillary alveolar ridge to the mandibular alveolar ridge in the lateral oral cavity, restricting mouth opening and potentially interfering with feeding and breathing in the neonatal period. The condition primarily affects the craniofacial structures, specifically the oral cavity. Key clinical features include cleft of the soft and/or hard palate, lateral intraoral fibrous bands (synechiae) between the upper and lower jaws, and limited oral opening. Some affected individuals may also present with additional findings such as oral anomalies. The synechiae can vary in thickness and extent, and their presence alongside cleft palate distinguishes this syndrome from isolated cleft palate or other synechia-associated conditions. Treatment is surgical and involves division of the synechiae to restore normal jaw mobility and oral function, followed by standard cleft palate repair. Early intervention is important to ensure adequate feeding and airway management in affected neonates. The prognosis after surgical correction is generally favorable, though long-term follow-up may be needed for speech development and dental care. Only a small number of cases have been reported in the medical literature, making this an exceptionally rare condition.

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