Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma

Giant cell ependymomas (GCE) are extremely rare tumors, with 24 cases described in the literature. Squash cytology is a rapid, reliable, simple technique for intraoperative consultation in neurosurgical practice. We describe a rare case of GCE arising at level of L4-L5 in a 66-year-old woman and dis...

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Main Authors: Ebru Cakir, Ulku Kucuk, Ayca Ersen, Emel E Pala, Mehmet Senoglu, Ali O Binatli, Zubeyde Yildirim
Format: Article
Language:English
Published: Wolters Kluwer Medknow Publications 2017-01-01
Series:Journal of Cytology
Subjects:
Online Access:http://www.jcytol.org/article.asp?issn=0970-9371;year=2017;volume=34;issue=1;spage=63;epage=65;aulast=Cakir
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author Ebru Cakir
Ulku Kucuk
Ayca Ersen
Emel E Pala
Mehmet Senoglu
Ali O Binatli
Zubeyde Yildirim
author_facet Ebru Cakir
Ulku Kucuk
Ayca Ersen
Emel E Pala
Mehmet Senoglu
Ali O Binatli
Zubeyde Yildirim
author_sort Ebru Cakir
collection DOAJ
description Giant cell ependymomas (GCE) are extremely rare tumors, with 24 cases described in the literature. Squash cytology is a rapid, reliable, simple technique for intraoperative consultation in neurosurgical practice. We describe a rare case of GCE arising at level of L4-L5 in a 66-year-old woman and discuss the cytologic/histologic features. Intraoperative smears were highly cellular with a prominent fibrillary background and exhibited papillary structures and sheets composed of highly atypical and bizarre cells. Some of the cells showed nuclear pseudoinclusions and rarely formed pseudorosette-like arrays. Intraoperative diagnosis was high grade glial tumor. On paraffin sections, besides extensive polymorphism, there were no microvascular proliferation, necrosis, and mitosis and the final diagnosis was WHO grade II GCE. GCE may be a diagnostic challenge on intraoperative smears, frozen, and paraffin sections. It must be kept in mind in the differential diagnosis of giant cell exhibiting benign and malignant tumors of brain.
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spelling doaj.art-1c58e06ff81145dcacb15a944abdc0002022-12-22T03:15:32ZengWolters Kluwer Medknow PublicationsJournal of Cytology0970-93712017-01-01341636510.4103/0970-9371.197625Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemmaEbru CakirUlku KucukAyca ErsenEmel E PalaMehmet SenogluAli O BinatliZubeyde YildirimGiant cell ependymomas (GCE) are extremely rare tumors, with 24 cases described in the literature. Squash cytology is a rapid, reliable, simple technique for intraoperative consultation in neurosurgical practice. We describe a rare case of GCE arising at level of L4-L5 in a 66-year-old woman and discuss the cytologic/histologic features. Intraoperative smears were highly cellular with a prominent fibrillary background and exhibited papillary structures and sheets composed of highly atypical and bizarre cells. Some of the cells showed nuclear pseudoinclusions and rarely formed pseudorosette-like arrays. Intraoperative diagnosis was high grade glial tumor. On paraffin sections, besides extensive polymorphism, there were no microvascular proliferation, necrosis, and mitosis and the final diagnosis was WHO grade II GCE. GCE may be a diagnostic challenge on intraoperative smears, frozen, and paraffin sections. It must be kept in mind in the differential diagnosis of giant cell exhibiting benign and malignant tumors of brain.http://www.jcytol.org/article.asp?issn=0970-9371;year=2017;volume=34;issue=1;spage=63;epage=65;aulast=CakirCytology; ependymoma; giant cells; squash smear
spellingShingle Ebru Cakir
Ulku Kucuk
Ayca Ersen
Emel E Pala
Mehmet Senoglu
Ali O Binatli
Zubeyde Yildirim
Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
Journal of Cytology
Cytology; ependymoma; giant cells; squash smear
title Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
title_full Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
title_fullStr Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
title_full_unstemmed Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
title_short Intraoperative squash cytology and histology of giant cell ependymoma: A diagnostic dilemma
title_sort intraoperative squash cytology and histology of giant cell ependymoma a diagnostic dilemma
topic Cytology; ependymoma; giant cells; squash smear
url http://www.jcytol.org/article.asp?issn=0970-9371;year=2017;volume=34;issue=1;spage=63;epage=65;aulast=Cakir
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