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Microphthalmia with single central incisor and hypopituitarism
1Department of Pediatrics, University of Nevada School of Medicine, Reno 89557.
Journal of Medical Genetics
|March 1, 1990
Abstract:
A patient is described with a new association of microphthalmia, single central incisor, and hypopituitarism believed to represent a holoprosencephaly malformation. In view of the genetic ramifications of this malformation and its variable manifestations, we would like to alert the clinician to consider holoprosencephaly whenever midline malformations are detected.
Insights
A patient presented with microphthalmia, a single central incisor, and hypopituitarism, suggesting holoprosencephaly. This highlights the need to consider holoprosencephaly in cases of midline malformations due to genetic factors.
Area of Science:
- Medical Genetics
- Developmental Biology
- Clinical Medicine
Background:
- Holoprosencephaly (HPE) is a spectrum of brain malformations resulting from incomplete forebrain division.
- Midline defects can manifest in various forms, impacting facial structures and endocrine function.
- Genetic factors play a significant role in the etiology and variable expressivity of HPE.
Observation:
- A case report details a patient with a unique combination of microphthalmia (abnormally small eyes).
- The patient also exhibited a single central incisor, a rare dental anomaly.
- Hypopituitarism, a deficiency in pituitary hormone production, was also noted.
Findings:
- The observed constellation of microphthalmia, single central incisor, and hypopituitarism is proposed as a novel association.
- This specific phenotype is believed to represent a manifestation of holoprosencephaly.
- The findings underscore the diverse clinical presentations of HPE.
Implications:
- Clinicians should maintain a high index of suspicion for holoprosencephaly when encountering midline malformations.
- Early recognition of HPE is crucial for genetic counseling and management of associated endocrine and developmental issues.
- This case expands the known phenotypic spectrum of holoprosencephaly, aiding future diagnostic efforts.