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- Cytologic Features of Giant Cell Ependymoma: A Case Report and Review of the Literature
- Myoung Ju Koh, Sun Och Yoon, Hyae Min Jeon, Hyeon Joo Jeong, Soon Won Hong, Se Hoon Kim
- Korean J Pathol. 2012;46(5):507-513. Published online October 25, 2012
- DOI: https://doi.org/10.4132/KoreanJPathol.2012.46.5.507
- 9,255 View
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Abstract
PDF Here, we present a case of anaplastic giant cell ependymoma (GCE) occurring in a 15-year-old woman. Squash smear slides for intraoperative frozen section diagnosis revealed oval to round cell clusters with a papillary structure in a fibrillary background. This was occasionally accompanied by the presence of bizarre pleomorphic giant cells with hyperchromatic nuclei and prominent intranuclear inclusions. These intranuclear inclusions were a key clue to diagnosis of ependymoma. Histologic analysis revealed features of a high-grade tumor with perivascular pseudorosettes and bizarre pleomorphic giant cells, which established the diagnosis of GCE. We performed a review of literatures about the cytologic features of GCE, including our case, thus proposing that intraoperative frozen diagnosis of GCE would be established by squash smear preparations featuring the mitosis and necrosis, as well as the high cellularity, and the presence of giant cells showing hyperchromatic nuclei with eosinophilic cytoplasm and intranuclear inclusions/pseudoinclusions.
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Citations
Citations to this article as recorded by
- A case of myxopapillary ependymoma with predominant giant cell morphology: A rare entity with comprehensive genomic profiling and review of literature
Bryan Morales‐Vargas, Hassan Saad, Daniel Refai, Matthew Schniederjan, Zied Abdullaev, Kenneth Aldape, Malak Abedalthagafi
Neuropathology.2025; 45(1): 13. CrossRef - Report of a case of giant cell ependymoma with unusual clinical and pathological presentation
Mónica B. Mezmezian, Victor Del Caño, Liliana G. Olvi
Neuropathology.2019; 39(4): 313. CrossRef - Giant Cell Ependymoma of Cervicomedullary Junction: A Case Report of a Long-Term Survivor and Literature Review
Martina Cappelletti, Andrea G. Ruggeri, Giorgia Iacopino, Roberto Delfini
World Neurosurgery.2018; 116: 121. CrossRef - Immunohistochemical features of giant cell ependymoma of the filum terminale with unusual clinical and radiological presentation
Fernando Candanedo-Gonzalez, Cindy Sharon Ortiz-Arce, Samuel Rosales-Perez, Ana Lilia Remirez-Castellanos, Candelaria Cordova-Uscanga, Armando Gamboa-Dominguez
Diagnostic Pathology.2017;[Epub] CrossRef - Giant Cell Ependymoma of Lateral Ventricle: Case Report, Literature Review, and Analysis of Prognostic Factors and Genetic Profile
Hirokazu Takami, Christopher S. Graffeo, Avital Perry, Aditya Raghunathan, Robert B. Jenkins, Caterina Giannini, Terry C. Burns
World Neurosurgery.2017; 108: 997.e9. CrossRef
- A case of myxopapillary ependymoma with predominant giant cell morphology: A rare entity with comprehensive genomic profiling and review of literature
- The Cytologic Features of Desmoplastic Small Round Cell Tumor with Intranuclear Inclusions : A Case Report .
- Ho Chang Lee, Hye Suk Han, Ok Jun Lee
- Korean J Pathol. 2009;43(3):279-284.
- DOI: https://doi.org/10.4132/KoreanJPathol.2009.43.3.279
- 2,685 View
- 28 Download
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Abstract
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- Desmoplastic small round cell tumor (DSRCT) is a rare neoplasm of young adults and it is characterized by polyphenotypic differentiation. We experienced a case of abdominal DSRCT that occurred in a 19-year-old female who presented with painful swelling of her right forearm. The tumor was cytokeratin-negative and it exhibited some tumor cells with intranuclear inclusions. Molecular demonstration of EWS-WT1 fusion transcripts is particularly useful to confirm the diagnosis of DSRCT without epithelial differentiation. We report here on a case of cytokeratin-negative DSRCT that showed an unusual feature of intranuclear inclusions.
- Juxtacortical Glomus Tumor of the Tibia with an Uncertain Malignant Potential.
- Dae Woon Eom, Gil Hyun Kang, Hee Jin Lee, Soo Jung Choi, Jae kwang Hwang
- Korean J Pathol. 2008;42(3):181-184.
- 2,191 View
- 36 Download
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Abstract
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- Glomus tumors are mesenchymal neoplasms that are composed of modified smooth muscle cells of the normal glomus body. Most glomus tumors are benign and they occur in the distal extremities, and particularly the subungual lesions that occur in the hand, the wrist and the foot. We report here on a case of a solid type glomus tumor that had an uncertain malignant potential with a juxtacortical location at the distal tibia, and there were no neoplastic erosion of the cortical surface and no periosteal reaction. The tumor cells showed mild nuclear atypia and moderate mitotic activity (3-5/10HPF). Prominent intranuclear cytoplasmic pseudoinclusions were also observed. This case is interesting due to the very unusual tumor location of the juxtacortical area of the long bone, the atypical histologic features and the unique cytological finding of cytoplasmic intranuclear inclusions throughout the tumor cells.
- Multiple Glomus Tumors of the Ankle with Prominent Intranuclear Pseudoinclusions.
- Jae Yeon Seok, Se Hoon Kim, Tae jung Kwon, Jieun Kwon, Yoon Hee Lee, Kyoo Ho Shin, Woo Ick Yang
- Korean J Pathol. 2007;41(5):337-342.
- 2,093 View
- 23 Download
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Abstract
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- Glomus tumors are neoplasms that are composed of modified smooth muscle cells of the glomus body. Here, we report a case of multiple glomus tumors of the ankle that showed various histologic types, including the solid type (glomus tumor proper) and angiomatous type (glomangioma). The tumor cells observed in this case also showed prominent intranuclear inclusions, which has not yet been reported in glomus tumors. Ultrastructural examination demonstrated that the nuclear inclusions were not true inclusion bodies but were intranuclear cytoplasmic pseudoinclusions formed by cytoplasmic invaginations that formed as a result of the deep and complex nuclear contours.
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