Balkenläsionen
Lesions of
the corpus callosum • Corpus callosum lymphoma - Ganzer Fall bei Radiopaedia
Glioblastoma,
IDH-wildtype • Glioblastoma NOS (butterfly morphology) - Ganzer Fall bei Radiopaedia
Glioblastoma,
IDH-wildtype • Glioblastoma NOS (splenium) - Ganzer Fall bei Radiopaedia
Lesions of
the corpus callosum • Marchiafava Bignami syndrome - Ganzer Fall bei Radiopaedia
Cerebral
cavernous venous malformation • Cavernous malformation of the corpus callosum - Ganzer Fall bei Radiopaedia
Lesions of
the corpus callosum • Splenium of corpus callosum acute infarction: posterior pericallosal artery territory - Ganzer Fall bei Radiopaedia
MRT bei "Mild
encephalitis / encephalopathy with reversible lesion in the splenium" bei einem 6-jährigen mit Norovirus. T2w, DWI, ADC.
Lesions of the corpus callosum are uncommon and arise from multiple different etiologies. The lesions can be classified according to underlying pathophysiology .
Congenital
- agenesis of the corpus callosum
- enlarged perivascular spaces
- tubonodular pericallosal lipoma: associated with dysgenesis of the corpus callosum
Demyelination
- acute disseminated encephalomyelitis
- Marchiafava-Bignami disease: demyelination and necrosis, can appear as cystic lesions
- multiple sclerosis
- neuromyelitis optica
- progressive multifocal leukoencephalopathy
- Susac syndrome
- wallerian degeneration
Infection
- aspergillosis: can involve corpus callosum
- transient lesions of the splenium: many underlying etiologies including infectious agents
- subacute sclerosing panencephalitis: can involve the corpus callosum in advanced stages
- tuberculosis: callosal tuberculomas have been reported, although rare
Leukodystrophy
Neoplasm
Typically, amongst neoplasms, only aggressive lesions can invade the corpus callosum as it is composed of very dense white matter tracts which act as a barrier to tumor spreading .
- anaplastic astrocytoma
- callosal oligodendroglioma
- glioblastoma (butterfly glioma)
- gliomatosis cerebri
- meningioma: secondary involvement from primary falx lesion
- metastasis: rare, mainly from contiguous extension of lesion adjacent to corpus callosum
- primary CNS lymphoma
Other
- corpus callosum impingement syndrome
- cytotoxic lesions of the corpus callosum (CLOCCs): many underlying etiologies
- posterior reversible encephalopathy syndrome (PRES): callosal involvement seen in up to 10% of patients, usually with associated parieto-occipital T2-hyperintensities
- post shunt decompression: after placement of ventriculostomy in patients with chronic hydrocephalus
Trauma
Vascular
- aneurysm: can occasionally rupture into the corpus callosum
- arteriovenous malformation: arising around the corpus callosum
- cavernous malformation (cavernoma)
- gliosis: secondary to small vessel chronic ischemia, subcortical arteriosclerotic encephalopathy, radiation therapy and normal aging ; histologically corresponds to subependymal gliosis
- the subependymal splenium is typically affected with normal aging and after radiation therapy
- hypoxic-ischemic encephalopathy: corpus callosum only involved in severe or advanced case
- infarction: rare because of extensive collateral vascular supply, most often seen with emboli, major ischemic stroke, subfalcine herniation with mass effect and vasculitides
Siehe auch:
- Balkenlipom
- Arteriovenöse Malformation
- Gliomatosis cerebri
- Corpus callosum
- Glioblastoma multiforme
- Cytotoxic lesions of the corpus callosum (CLOCCs)
- Diffuses axonales Schädelhirntrauma
- Encephalomyelitis disseminata
- butterfly glioma
- Diffusionsstörung im Balken
- Balkenatrophie
- primäres ZNS-Lymphom
- Sjögren-Larsson syndrome
- Bristowe-Syndrom
- callosal oligodendroglioma
- tubonodular pericallosal lipoma
- Dysgenesie des Corpus callosum
und weiter:
Assoziationen und Differentialdiagnosen zu Balkenläsionen:
