Spectrum of severe skeletal dysplasias in North India
Ratna D Puri1, Seema Thakur, I C Verma
1Department of Genetic Medicine, Sir Ganga Ram Hospital, New Delhi, India. icverma@airtelbroadband.in
Insights
Severe skeletal dysplasias are lethal bone growth disorders. Accurate diagnosis through fetal autopsy and radiography is crucial for genetic counseling and understanding these conditions.
Area of Science:
- Medical Genetics
- Fetal Pathology
- Skeletal Biology
Background:
- Severe skeletal dysplasias encompass a group of lethal bone growth disorders.
- These conditions typically result in fetal or infant mortality.
- Understanding their spectrum is vital for clinical management.
Purpose of the Study:
- To report the experience with severe skeletal dysplasias diagnosed via fetal autopsies.
- To analyze cases over a five-year period at a tertiary care center.
- To highlight the importance of accurate diagnosis in lethal skeletal dysplasias.
Main Methods:
- Evaluation of 15 cases presenting with short-limbed dwarfism.
- Inclusion of 13 fetuses from terminated pregnancies.
- Inclusion of 2 fetuses evaluated postnatally.
Main Results:
- Diagnosed lethal skeletal dysplasias included short rib dysplasia syndromes (with/without polydactyly), osteogenesis imperfecta type II, thanatophoric dysplasia, campomelic dysplasia, chondrodysplasia punctata (rhizomelic type), and achondrogenesis.
- These represent a spectrum of severe, lethal skeletal malformations.
- The study identified specific types of severe skeletal dysplasias.
Conclusions:
- Precise identification of skeletal dysplasia type is paramount for genetic counseling.
- Detailed postnatal and radiographic examination of the fetus is essential.
- Examination of the pelvis, limbs, skull, and spine aids in diagnosis.
Objective:
Severe skeletal dysplasias are a group of bone growth disorders characterized by a lethal outcome in utero or infancy. We describe our experience of the severe skeletal dysplasias diagnosed amongst fetal autopsies done at a tertiary level centre over a five year period.
Methods:
We evaluated 15 cases with short limbed dwarfism, of which 13 fetuses were examined after termination of pregnancy and two were evaluated postnatally.
Results:
Short rib dysplasia syndromes with or without polydactyly, osteogenesis imperfecta type II, thanatophoric dysplasia, campomelic dysplasia, chondrodysplasia punctata, rhizomelic type and achondrogenesis were the lethal skeletal dysplasias diagnosed.
Conclusion:
Precise identification of the tye of skeletal dysplasia is paramount for proper genetic counseling. Postnatal examination and detailed radiographic examination of the fetus especially of the pelvis, limbs, skull and spine are essential to identify the type of skeletal dysplasia.
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