Is webbing (pterygia) a constant feature in patients with Escobar syndrome?

Orthop Surg. 2013 Nov;5(4):297-301. doi: 10.1111/os.12064.

Abstract

We describe two unrelated patients aged 9 and 12 years. The first patient presented with multiple congenital contractures not associated with webbing (pterygia). Interestingly, his genetic testing showed the typical genotypic criteria of Escobar syndrome (CHRNG heterozygous mutation). The characteristics of the second child were compatible with the phenotypic and genotypic criteria for Escobar syndrome. Both patients manifested the typical facial features suggestive of Escobar syndrome. The aim of this paper is twofold: first, to illustrate that the absence of popliteal webbing is not a sufficient reason to exclude Escobar syndrome in patients with multiple contractures and second, dysmorphic facial features and the presence of certain radiological abnormalities might be considered baseline diagnostic tools in favor of this syndromic entity.

Keywords: CHRNG heterozygous mutation; Congenital multiple contractures; Escobar syndrome.

Publication types

  • Case Reports

MeSH terms

  • Abnormalities, Multiple / diagnosis*
  • Abnormalities, Multiple / genetics
  • Abnormalities, Multiple / surgery
  • Child
  • Facies
  • Genotype
  • Humans
  • Knee / abnormalities
  • Male
  • Malignant Hyperthermia / diagnosis*
  • Malignant Hyperthermia / genetics
  • Malignant Hyperthermia / surgery
  • Mutation
  • Phenotype
  • Receptors, Nicotinic / genetics
  • Skin Abnormalities / diagnosis*
  • Skin Abnormalities / genetics
  • Skin Abnormalities / surgery

Substances

  • CHRNG protein, human
  • Receptors, Nicotinic

Supplementary concepts

  • Multiple pterygium syndrome