Marinesco-Sjögren syndrome

Neurodegenerative diseases

General description

Marinesco-Sjögren syndrome is a rare autosomal recessive disorder characterized by a combination of clinical symptoms. Key features include cerebellar ataxia, leading to difficulties with balance and coordination, and early-onset cataracts, which typically develop in infancy or early childhood. Patients often experience progressive muscle weakness, particularly in the lower extremities, along with hypotonia. Intellectual disability, ranging from mild to moderate, is common, as are speech impairments such as dysarthria and involuntary eye movements (nystagmus). Skeletal abnormalities, including short stature and scoliosis, may also be present. Additionally, hypergonadotropic hypogonadism can result in delayed or absent puberty.

Cerebellar hypoplasia

  • Cerebellum
Bilateral
Morphology
Atrophy

MRI demonstrates bilateral cerebellar hypoplasia. This description must be refined later.

Cortical hyperintensity of cerebellum

  • Cerebellum
    Cerebellar cortex
Symmetric
Bilateral
T2WI
Hyperintensity
FLAIR
Hyperintensity

The salient neuroimaging features of this syndrome encompass T2WI/FLAIR hyperintensity within the cerebellar cortex. Similar imaging findings are also seen in PMM2-congenital disorder of glycosylation (PMM2-CDG).