Catel-Manzke syndrome

Catel-Manzke syndrome (also known as index finger anomaly with Pierre Robin syndrome, or palatodigital syndrome) is a rare congenital disorder characterized by the combination of Pierre Robin sequence (micrognathia, glossoptosis, and cleft palate) with a distinctive bilateral hyperphalangy of the index fingers. The extra bone (accessory ossicle) is located at the base of the index finger on the radial side, causing the finger to deviate toward the thumb side (radial clinodactyly). This unique hand anomaly is considered the hallmark feature of the syndrome and helps distinguish it from isolated Pierre Robin sequence. The condition primarily affects the craniofacial structures and the skeletal system, particularly the hands. Affected infants often present at birth with significant breathing and feeding difficulties due to the small jaw and tongue displacement. Congenital heart defects, including atrial and ventricular septal defects, have been reported in some patients and represent an important associated feature. Joint hypermobility and short stature may also occur. Intelligence is typically normal, though developmental delays have been described in some cases. Treatment is symptomatic and supportive. Management of the Pierre Robin sequence may include prone positioning, nasopharyngeal airways, or in severe cases, mandibular distraction osteogenesis or tracheostomy to secure the airway. Cleft palate repair is performed surgically, usually in the first year of life. The index finger anomaly generally improves with age and often does not require surgical intervention, as the accessory bone may fuse spontaneously. Cardiac defects, when present, are managed according to standard cardiological protocols. Long-term prognosis is generally favorable with appropriate early management.

Common questions about Catel-Manzke syndrome