Primary pulmonary hypoplasia

What it is

Primary pulmonary hypoplasia is a rare, isolated, genetic developmental defect during embryogenesis characterized by congenital malformation of pulmonary parenchyma with absence of other anomalies. Neonatally patients present with decreased breath sounds, small lung volume and severe respiratory distress that is not responsive to aggressive treatment (including surfactant instillation/ mechanical respiratory support). It is usually not compatible with life.

Key facts

Prevalence

<1 / 1 000 000

Age of onset

Antenatal, Neonatal

Classified as

Morphological anomaly

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.

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.

Cross-references