Segmental progressive overgrowth syndrome with fibroadipose hyperplasia

What it is

A rare PIK3CA-related overgrowth syndrome disease characterized by segmental and progressive overgrowth, predominantly involving the adipose tissue, or a mixture of adipose and fibrous tissue, with variable involvement of subcutaneous and muscular tissue, as well as skeletal overgrowth. Overgrowth severity and range is highly variable, although frequently it is asymmetric and disproportionate, it affects lower extremities more than the upper ones, and progresses in a distal to proximal pattern. Congenital overgrowth is typically associated.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Antenatal, Neonatal

Inheritance

Not applicable

Classified as

Disease

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

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.

Gene

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