Related Experiment Video
Updated: Jun 17, 2026
Murine Fetal Echocardiography
Published on: February 15, 2013
Fetal MR imaging of Kniest dysplasia
Zeynep Yazici1, Beth M Kline-Fath, Tal Laor
1Faculty of Medicine, Department of Radiology, Uludag University, Gorukle, Turkey.
Abstract:
We present a case of Kniest dysplasia, a rare form of the type II collagenopathies, with prenatal MRI. Sonography revealed only short limbs in the fetus. Fetal MRI findings included enlarged hyaline cartilaginous structures with abnormally high T2 signal intensity, delayed ossification of the pubic and ischial bones, and platyspondyly. By delineating the cartilaginous abnormalities, fetal MRI can contribute to the prenatal diagnosis of chondrodysplasias.
Insights
Prenatal MRI identified Kniest dysplasia, a rare collagenopathy, by revealing enlarged cartilage and delayed bone ossification. This imaging technique aids in the early diagnosis of fetal chondrodysplasias.
Area of Science:
- Medical imaging
- Genetics
- Orthopedics
Background:
- Kniest dysplasia is a rare skeletal disorder affecting type II collagen.
- It is characterized by disproportionate short stature and skeletal abnormalities.
- Prenatal diagnosis can be challenging with conventional methods.
Observation:
- A fetus presented with short limbs on sonography.
- Fetal MRI revealed enlarged hyaline cartilaginous structures with high T2 signal intensity.
- Delayed ossification of pubic and ischial bones and platyspondyly were noted.
Findings:
- Fetal MRI effectively delineated cartilaginous abnormalities characteristic of Kniest dysplasia.
- Specific MRI features included enlarged cartilage and delayed ossification.
- The findings correlated with Kniest dysplasia, a type II collagenopathy.
Implications:
- Fetal MRI offers valuable insights for diagnosing skeletal dysplasias prenatally.
- This advanced imaging can improve the management and counseling of affected families.
- It highlights the role of MRI in identifying subtle cartilaginous defects.
