ARIA-H (amyloid-related imaging abnormalities with microhemorrhages and hemosiderin deposits)

E125385

ARIA-H (amyloid-related imaging abnormalities with microhemorrhages and hemosiderin deposits) is a brain MRI finding characterized by small cerebral microbleeds and hemosiderin accumulation, typically associated with anti-amyloid therapies for Alzheimer’s disease.

All labels observed (1)

How this entity was disambiguated

Statements (50)

Predicate Object
instanceOf amyloid-related imaging abnormality
radiologic finding
abbreviationFor amyloid-related imaging abnormalities with microhemorrhages and hemosiderin deposits
associatedWith Alzheimer's disease
Aduhelm
surface form: aducanumab

anti-amyloid therapy
cerebral amyloid angiopathy
Leqembi
surface form: donanemab

Leqembi
surface form: lecanemab

monoclonal antibodies targeting beta-amyloid
canBeAsymptomatic true
canCauseSymptom confusion
focal neurological deficits
headache
seizures
distinguishedFrom ARIA-E
firstDescribedInContextOf clinical trials of anti-amyloid therapies for Alzheimer's disease
fullName amyloid-related imaging abnormalities with microhemorrhages and hemosiderin deposits
hasCourse may stabilize or progress with continued exposure to anti-amyloid therapy
hasFeature cerebral microbleeds
hemosiderin deposits
lobar microhemorrhages
punctate hypointense lesions on susceptibility-sensitive sequences
superficial siderosis
hasImagingModality magnetic resonance imaging
hasLateralityPattern often multifocal and bilateral
hasPathophysiology microhemorrhage and hemosiderin deposition around amyloid-laden vessels
vascular fragility due to amyloid-laden vessels
hasTypicalSequence T2*-weighted MRI
gradient-echo MRI
susceptibility-weighted imaging
isPartOf amyloid-related imaging abnormalities
isSubtypeOf cerebral microhemorrhage
treatment-emergent imaging abnormality
managementIncludes dose reduction of anti-amyloid therapy
permanent discontinuation of anti-amyloid therapy in severe cases
temporary interruption of anti-amyloid therapy
monitoredBy serial brain MRI
occursIn cerebellum
cerebral cortex
leptomeninges
subcortical white matter
requiresDifferentialDiagnosisWith cerebral amyloid angiopathy without treatment
hypertensive microbleeds
other causes of cerebral microhemorrhages
riskFactor APOE ε4 allele
advanced age
higher doses of anti-amyloid antibodies
pre-existing cerebral microbleeds
temporalRelationToTreatment treatment-emergent during anti-amyloid therapy

How these facts were elicited

Referenced by (1)

Full triples — surface form annotated when it differs from this entity's canonical label.

Leqembi hasCommonAdverseEffect ARIA-H (amyloid-related imaging abnormalities with microhemorrhages and hemosiderin deposits)