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Giampietro, P.F. et al.

Giampietro, Babu, Koehn, Jacobson, Mueller-Schrader, Moretti, Patten, Shaffer, Gorlin, Dobyns,

New syndrome: focal dermal hypoplasia, morning glory anomaly, and polymicrogyria.

Regional skin hypoplasia has been described in several genetic syndromes, including focal dermal hypoplasia (FDH), microphthalmia with linear skin defects ( MLS), oculocerebrocutaneous syndrome (OCCS), and terminal osseous dysplasia and pigmentary defects (TODP). All but OCCS have been reported to follow an X-linked inheritance pattern. We describe a 14-year-old girl with clinical features overlapping with these disorders. She had mild mental retardation, macrocephaly, microphthalmia, right-sided morning glory optic disc anomaly, palmar and lip pits, and polysyndactyly. A swirling pattern of skin hypopigmentation, papular hypopigmented and herniated skin lesions reminiscent of FDH most prominent over her face, head, hands, and feet was evident. Brain magnetic resonance imaging (MRI) showed polymicrogyria (most severely in the perisylvian and mesial frontal regions), enlarged left lateral ventricle, partial agenesis of the corpus callosum, and optic nerve tumor on the right. Dermatopathologic examination of the skin lesions was consistent with basaloid follicular hamartomas. The skin and digit anomalies observed overlap with FDH, but polymicrogyria, basaloid follicular hamartomas, optic nerve tumor, and morning glory anomaly have not previously been described in FDH. Skin defects in MLS are linear and the eyes typically have sclerocornea. Polymicrogyria has been described in OCCS, but not in any of the other three syndromes. The limb anomalies in TODP are reductions rather than polysyndactyly. Skin defects are localized to the face, and digital fibromas usually occur. While significant overlap exists between all four of the syndromes discussed, we believe that the constellation of anomalies observed in this girl most likely comprises a newly recognized syndrome.[1]

References

New syndrome: focal dermal hypoplasia, morning glory anomaly, and polymicrogyria. Giampietro, P.F., Babu, D., Koehn, M.A., Jacobson, D.M., Mueller-Schrader, K.A., Moretti, C., Patten, S.F., Shaffer, L.G., Gorlin, R.J., Dobyns, W.B. Am. J. Med. Genet. A (2004) [Pubmed]

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