Cortical tuber

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Cortical tubers are malformative lesions in the CNS observed in tuberous sclerosis complex (abbreviated TSC), an autosomal dominant syndrome.

Micrograph showing a cortical tuber. H&E stain. (WC/jensflorian


General

  • Cortical tubers are malformative, epilepsy-associated.[1]
    • Seen in 80-90% of the TSC cases.
    • Gyrus is usu. thickened, raised, and occasionally dimpled.
    • Giant cells, dysmorphic neurons, disrupted cortical lamination, gliosis, calcifications.
    • Ballon cells are Vim+ve, MAP2+ve, Nestin+ve, GFAP+/-ve, NeuN+/-ve.
    • TSC2 has larger and more numerous tubers.[2]


DDx

  • Focal cortical dysplasia ILAE type IIB (Tubers are usu. multifocal).

See also

Tuberous sclerosis

References

  1. Cotter, JA. (Apr 2019). "An update on the central nervous system manifestations of tuberous sclerosis complex.". Acta Neuropathol. doi:10.1007/s00401-019-02003-1. PMID 30976976.
  2. Overwater, IE.; Swenker, R.; van der Ende, EL.; Hanemaayer, KB.; Hoogeveen-Westerveld, M.; van Eeghen, AM.; Lequin, MH.; van den Ouweland, AM. et al. (12 2016). "Genotype and brain pathology phenotype in children with tuberous sclerosis complex.". Eur J Hum Genet 24 (12): 1688-1695. doi:10.1038/ejhg.2016.85. PMID 27406250.