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Polycystic lipomembranous osteodysplasia with sclerosing leukoencephaly

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Concept ID:
Disease or Syndrome
Synonyms: Brain-bone-fat disease; Dementia, prefrontal, with bone cysts; Dementia, progressive, with lipomembranous polycystic osteodysplasia; Nasu-Hakola disease; Polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy; Presenile dementia with bone cysts
SNOMED CT: Presenile dementia with bone cysts (702347001); PLOSL - polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (702347001); Nasu-Hakola disease (702347001); Polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (702347001)
Monarch Initiative: MONDO:0009092
OMIM® Phenotypic series: PS221770
Orphanet: ORPHA2770

Disease characteristics

Polycystic lipomembranous osteodysplasia with sclerosing leukoencephalopathy (PLOSL) is characterized by fractures (resulting from radiologically demonstrable polycystic osseous lesions), frontal lobe syndrome, and progressive presenile dementia beginning in the fourth decade. The clinical course of PLOSL can be divided into four stages: 1. The latent stage is characterized by normal early development. 2. The osseous stage (3rd decade of life) is characterized by pain and tenderness, mostly in ankles and feet, usually following strain or injury. Fractures are typically diagnosed several years later, most commonly in the bones of the extremities. 3. In the early neurologic stage (4th decade of life), a change of personality begins to develop insidiously. Affected individuals show a frontal lobe syndrome (loss of judgment, euphoria, loss of social inhibitions, disturbance of concentration, and lack of insight, libido, and motor persistence) leading to serious social problems. 4. The late neurologic stage is characterized by progressive dementia and loss of mobility. Death usually occurs before age 50 years. [from GeneReviews]
Juha Paloneva  |  Taina Autti  |  Panu Hakola, et. al.   view full author information

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