Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
Case Reports
, 26 (1), 72-81

Astroblastoma: Immunohistochemical and Ultrastructural Study of Distinctive Epithelial and Probable Tanycytic Differentiation

Affiliations
Case Reports

Astroblastoma: Immunohistochemical and Ultrastructural Study of Distinctive Epithelial and Probable Tanycytic Differentiation

Toshihiko Kubota et al. Neuropathology.

Abstract

We report the clinicopathological findings of astroblastoma found in an 8-year-old girl who was subsequently treated for 11 years. The primary superficially circumscribed tumor was located in the frontoparietal lobe, while the recurrent and the second recurrent tumor were restricted to the same region 11 years later. The tumors obtained on these three occasions showed fundamentally the same histological, immunohistochemical and fine structural features. They exhibited astrocytic as well as ependymal tanycytic features with apparent epithelial cell lineage. The tumor cells showed typical features of astroblastoma comprising prominent perivascular pseudorosettes with remarkable vascular sclerosis. The immunohistochemical study revealed intensive positivity of GFAP, vimentin, epithelial membrane antigen (EMA), cytokeratin, connexin 26 and 32, desmocollin 1 and neuronal cadherin. The fine structure revealed divergent types of junctional complexes, some of which were connected with tonofilament bundles. Numerous microvilli protruded and basal lamina abutted on the tumor cell surface. We report these unique histological features, and stress that astroblastoma should be categorized as a specific type of neuroepithelial tumor.

Similar articles

See all similar articles

Cited by 14 PubMed Central articles

See all "Cited by" articles

Publication types

Substances

Feedback