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A case of cebocephaly-holoprosencephaly with an aberrant adenohypophysis
Insights
This study reports a rare case of cebocephaly-holoprosencephaly with a complex chromosomal abnormality. The autopsy revealed pituitary gland malformations, highlighting the need for further investigation into endocrine dysgenesis in such cases.
Area of Science:
- Developmental biology
- Medical genetics
- Endocrinology
Background:
- Holoprosencephaly is a severe congenital disorder characterized by incomplete forebrain division.
- Cebocephaly is a specific type of holoprosencephaly with facial anomalies.
- Pituitary gland development is crucial for fetal growth and endocrine function.
Observation:
- A 27-week gestation autopsy case of cebocephaly-holoprosencephaly was examined.
- Chromosome analysis identified a complex rearrangement: 46, XX,-7, +der(7), t(7;13) (q32;q34) pat.
- Pathological examination revealed a hypoplastic, aberrant adenohypophysis.
Findings:
- Immunohistochemistry demonstrated the presence of ACTH, GH, PRL, and TSH-beta within the aberrant pituitary.
- This indicates that hormone-producing cells were present but organized abnormally.
- The findings suggest pituitary dysgenesis as a component of this holoprosencephaly case.
Implications:
- Pituitary malformations in holoprosencephaly can range from dysgenesis to ectopic locations.
- Thorough examination for adenohypophysis is recommended in future holoprosencephaly cases.
- Understanding pituitary involvement is key to comprehending endocrine dysgenesis in these complex congenital anomalies.
Abstract:
An autopsy case of cebocephaly-holoprosencephaly at 27 weeks' gestation is reported. Chromosome analysis revealed a 46, XX,-7, +der(7), t(7;13) (q32;q34) pat karyotype. Pathological examination disclosed a hypoplastic aberrant adenohypophysis, in which immunohistochemical localization of four anterior pituitary hormones (ACTH, GH, PRL, TSH-beta) was demonstrated. Malformation of the pituitary gland in holoprosencephaly can include ectopic adenohypophysis as well as pituitary dysgenesis, so a careful search for adenohypophysis should be made in future cases for a better understanding of endocrine dysgenesis associated with holoprosencephaly.