Caring for someone with this diagnosis? Eleplan keeps diagnoses, medications, documents and every specialist in one plan.
Start free with EleplanNon-progressive predominantly posterior cavitating leukoencephalopathy with peripheral neuropathy
ORPHA:436271Disease
What it is
A rare mitochondrial disease characterized by a distinctive MRI pattern of cavitating leukodystrophy, predominantly in the posterior region of the cerebral hemispheres. The clinical picture varies widely between acute neurometabolic decompensation in infancy with loss of developmental milestones, seizures, and pyramidal signs rapidly evolving into spastic tetraparesis, to subtle neurological symptoms presenting in adolescence. The disease course tends to stabilize over time in most patients, and marked recovery of milestones may be observed.
Key facts
- Age of onset
- Childhood
- Inheritance
- Autosomal recessive
- Classified as
- Disease
Signs and symptoms
Common30–79%
34- Abnormal pyramidal sign
- Aminoaciduria
- Anemia
- Ataxia
- Bilateral sensorineural hearing impairment
- Decreased liver function
- Delayed speech and language development
- Developmental regression
- Diffuse hepatic steatosis
- Excessive daytime somnolence
- Exertional dyspnea
- Failure to thrive
- Fatigable weakness of swallowing muscles
- Gait disturbance
- Generalized hypotonia
- Generalized muscle weakness
- Global developmental delay
- Glycosuria
- Hepatomegaly
- Hyperphosphaturia
- Hypertrophic cardiomyopathy
- Increased CSF lactate
- Intellectual disability
- Lactic acidosis
- Motor delay
- Optic atrophy
- Pigmentary retinopathy
- Proteinuria
- Ptosis
- Renal Fanconi syndrome
- Renal tubular dysfunction
- Respiratory insufficiency due to muscle weakness
- Seizure
- Skeletal muscle steatosis
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
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.
Powered by Eleplan
A rare diagnosis is just the start. Eleplan keeps the whole care plan in one place.
Diagnoses, medications, documents, appointments, and the whole care team — organized and always in sync, so you are not retelling the same story to every new specialist. With Ellie, your AI care assistant, on top of it. Free to start.