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Start free with EleplanLethal recessive chondrodysplasia
ORPHA:1423Malformation syndrome
Also called Maroteaux-Stanescu-Cousin syndrome
What it is
Lethal recessive chondrodysplasia is an extremely rare lethal form of chondrodysplasia characterized by severe micromelic dwarfism, short and incurved limbs with normal hands and feet, facial dysmorphism (disproportionately large skull, frontal prominence, slightly flattened nasal bridge and short neck), muscular hypotonia, hyperlaxity of the extremities, and a narrow thorax. Most patients die of respiratory distress during the first hours or weeks of life. There have been no further descriptions in the literature since 1988.
Key facts
- Prevalence
- <1 / 1 000 000
- Age of onset
- Infancy, Neonatal
- Inheritance
- Autosomal recessive
- Classified as
- Malformation syndrome
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Always100%
6- Accelerated skeletal maturationDiagnostic criterion
- Flared metaphyses (elbow)Diagnostic criterion
- Generalized osteosclerosisDiagnostic criterion
- Limb undergrowthDiagnostic criterion
- Narrow chestDiagnostic criterion
- Short long boneDiagnostic criterion
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
ICD-10 codes
ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Cross-references
Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.
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