Combined anomalies of the palate in Mohr syndrome: is preoperative electromyography of the palate useful?

The authors present a girl with typical characteristics of oral-facial-digital syndrome type II (Mohr syndrome) with a cleft soft palate and pendulous tongue nodules. Because of feeding difficulties, electromyography was performed of both morphologically identical halves of the soft palate. One half showed a normal muscle action potential and in the other half electrical silence was registered. Exploratory surgery during palatoplasty showed a fatty hamartoma in the half of the palate in which no electric potentials had been registered.