Lower limb hypertrophy

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Lower limb hypertrophy

ORPHA:295051Morphological anomaly

What it is

A rare, genetic, non-syndromic developmental defect during embryogenesis disorder characterized by uni- or bilateral overgrowth of lower limbs involving bones and/or soft tissues and resulting in an abnormal increase in leg length and/or width. Hypertrophy presents either as a proportionate overgrowth of entire limb or involves only the proximal or distal parts of it. Phenotype ranges from mild hypertrophy without functional disability to massively hypertrophied limb with knee flexion and ankle equinus contractures and macrodystrophia lipomatosa. Patients may also present vascular abnormalities (e.g. cutaneous angiomas, varicose veins) and myalgia.

Key facts

Classified as
Morphological anomaly

ICD-10 codes

Q74.2filed under a broader ICD-10 category — shared with 9 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.

Cross-references

MONDO 0017477UMLS C0431928

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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