Granular cell tumor of the neurohypophysis presenting as a third ventricle mass

Granular cell tumors of the neurohypophysis (GCT) are rare benign neoplasms belonging, along with pituicytoma and spindle cell oncocytoma, to the family of TTF1‐positive low‐grade neoplasms of the posterior pituitary gland. GCT usually present as a solid sellar mass, slowly growing and causing compr...

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Veröffentlicht in:Neuropathology 2023-12, Vol.43 (6), p.472-478
Hauptverfasser: Lopez, Gianluca, Pescia, Carlo, Galli, Carlo, Bramerio, Manuela, Tosoni, Antonella, Nebuloni, Manuela, Ferrara, Mariarosa, Bertani, Giulio, Caschera, Luca, Triulzi, Fabio Maria, Locatelli, Marco, Tabano, Silvia, Croci, Giorgio Alberto
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container_end_page 478
container_issue 6
container_start_page 472
container_title Neuropathology
container_volume 43
creator Lopez, Gianluca
Pescia, Carlo
Galli, Carlo
Bramerio, Manuela
Tosoni, Antonella
Nebuloni, Manuela
Ferrara, Mariarosa
Bertani, Giulio
Caschera, Luca
Triulzi, Fabio Maria
Locatelli, Marco
Tabano, Silvia
Croci, Giorgio Alberto
description Granular cell tumors of the neurohypophysis (GCT) are rare benign neoplasms belonging, along with pituicytoma and spindle cell oncocytoma, to the family of TTF1‐positive low‐grade neoplasms of the posterior pituitary gland. GCT usually present as a solid sellar mass, slowly growing and causing compressive symptoms over time, occasionally with suprasellar extension. They comprise polygonal monomorphous cells with abundant granular cytoplasm, which is ultrastructurally filled with lysosomes. Here we report the case of a GCT presenting as a third ventricle mass, radiologically mimicking chordoid glioma, with aberrant expression of GFAP and Annexin‐A, which lends itself as an example of an integrated diagnostic approach to sellar/suprasellar and third ventricle masses.
doi_str_mv 10.1111/neup.12907
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subjects Brain tumors
Cytoplasm
Glial fibrillary acidic protein
granular cell tumor
Lysosomes
pituicytoma
Pituitary (posterior)
posterior pituitary
third ventricle
Ventricle
Ventricles (cerebral)
title Granular cell tumor of the neurohypophysis presenting as a third ventricle mass
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