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Ocular manifestations of the fetal hydantoin syndrome
Clinical Pediatrics
|July 1, 1981
Insights
Exposure to hydantoins during pregnancy can cause birth defects. This case highlights serious ocular abnormalities, including microphthalmus and coloboma, in an infant exposed to diphenylhydantoin in utero.
Area of Science:
- Teratology
- Developmental Biology
- Ophthalmology
Background:
- Diphenylhydantoin (DPH) is an anticonvulsant medication with known teratogenic potential.
- Prenatal exposure to DPH can lead to a spectrum of congenital abnormalities, known as hydantoin syndrome.
- Understanding the specific manifestations and risks associated with DPH exposure is crucial for clinical management.
Observation:
- This report details a case of a female infant exposed to diphenylhydantoin throughout gestation.
- Ocular findings were a primary focus, noted at birth and an 8-month examination.
- The infant presented with microphthalmus, prominent iris vasculature, and an inferior iris and choroidal coloboma.
Findings:
- The observed ocular anomalies, including microphthalmus and coloboma, are consistent with the known teratogenic effects of diphenylhydantoin.
- These findings underscore the serious clinical consequences that can arise from in utero exposure to hydantoins.
- The specific pattern of abnormalities highlights the vulnerability of ocular development to DPH exposure.
Implications:
- This case emphasizes the importance of recognizing and managing the risks of diphenylhydantoin teratogenicity.
- Ophthalmologists and obstetricians should be aware of these potential ocular defects in infants exposed prenatally.
- Further research into the mechanisms of DPH-induced teratogenesis may inform preventative strategies and treatment options.
Abstract:
Eleven per cent of infants exposed to hydantoins in utero have a recognizable pattern of abnormalities with serious clinical consequences. This report of a child born to a mother taking diphenylhydantoin emphasized the ocular findings. At birth and subsequent 8-month exam, a girl was noted to have microphthalmus, prominent iris vessels, and an inferior iris and choroidal colobma. Relation of these anomalies to teratogenic properties of diphenylhydantoin is discussed.