Dysplasia: mandibulo-acral
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Extremely rare. Transmission: autosomal recessive of a mutation of the LMNA gene or the gene ZMPSTE24. This last gene encodes for a protein involved in the synthesis of lamin A. Other mutations of lamin A/C can cause a lipodystrophy, the Emery-Dreifuss muscular dystrophy, non obstructive cardiomyopaties, Charcot-Marie-Tooth neuropathy or progeria.
Clinical findings:
- postnatal growth retardation: late closure of the fontanels
- craniofacial anomalies: mandibular hypoplasia
- skeletal abnormalities: hypoplasia of the clavicles (drooping shoulders); acroosteolysis; contractured joints
- a thin skin and lipoatrophy with premature aging similar to the progeria aspect
- dappled pigmentation of the skin
One distinguishes type A where lipoatrophy predominates at the extremities and type B where it is more widespread.
Anesthetic implications:
difficult intubation; risk of hypothermia (lipoatrophy)
References :
- Hoeffel J-C, Mainard L, Chastagner P, Hoeffel CC.
Mandibulo-acral dysplasia.
Skelethal Radiol 2000; 29: 668-71.
- Herd RS, Sprung J, Weingarten TN.
Primary osteolysis syndromes: beware of difficult airway.
Pediatr Anesth 2015; 25: 727-37.
Updated: July 2019