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[Thanatoforic dysplasia--case report]
Marek Pietryga1, Rafał Iciek, Maciej Brazert
1Klinika Połoznictwa i Chorób Kobiecych Uniwersytetu Medycznego im. Karola Marcinkowskiego w Poznaniu. kpichk@gpsk.am.poznan.pl
Ginekologia Polska
|March 18, 2010
Summary
This case report details prenatal diagnosis of thanatophoric dysplasia, a severe skeletal disorder. Early detection through ultrasound and genetic testing is crucial for understanding this condition.
Area of Science:
- Medical Genetics
- Prenatal Diagnosis
- Skeletal Dysplasias
Background:
- Thanatophoric dysplasia (TD) is a severe, lethal skeletal disorder.
- It is characterized by extreme micromelia, macrocephaly, and a narrow chest.
- TD typically arises from mutations in the fibroblast growth factor receptor 3 (FGFR3) gene.
Observation:
- This case report focuses on the prenatal diagnosis of a fetus with thanatophoric dysplasia.
- Characteristic ultrasound findings include extremely short, curved limbs, a narrow chest, enlarged abdomen, and macrocephaly.
- Dysmorphic facial features and polyhydramnion are also noted.
Findings:
- The genetic basis of TD involves mutations in the FGFR3 gene on chromosome 4.
- While considered autosomal dominant, most cases result from de novo mutations.
- The prognosis for infants with thanatophoric dysplasia is extremely poor.
Implications:
- Prenatal diagnosis of thanatophoric dysplasia is critical for genetic counseling and management.
- Ultrasound and advanced imaging play a key role in identifying characteristic features.
- Understanding the genetic underpinnings aids in differential diagnosis and future research.
