Overgrowth syndrome

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Overgrowth syndrome with 2q37 translocation

ORPHA:498488Malformation syndrome

What it is

A rare overgrowth syndrome with skeletal involvement characterized by long and slim body habitus and multiple skeletal manifestations, such as scoliosis, macrodactyly of the big toes, arachnodactyly of fingers and toes, camptodactyly and clinodactyly, and progressive valgus deformities of the feet. Epimetaphyseal dysplasia, bowing of the tibiae, and dysmorphic facial features (hypertelorism, high palate, or micrognathia), as well as aortic root dilatation and umbilical hernia have also been reported.

Key facts

Prevalence
<1 / 1 000 000
Age of onset
Infancy, Neonatal
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.

ICD-10 codes

Q87.3filed under a broader ICD-10 category — shared with 40 other rare diseases

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

MONDO 0034676UMLS C5567236

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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