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Kurokawa R, Baba A, Kurokawa M, Ota Y, Hassan O, Capizzano A, Kim J, Johnson T, Srinivasan A, Moritani T. Neuroimaging of astroblastomas: A case series and systematic review. J Neuroimaging 2021; 32:201-212. [PMID: 34816541 DOI: 10.1111/jon.12948] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 10/25/2021] [Accepted: 10/25/2021] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND AND PURPOSE Astroblastoma is a rare type of glial tumor, histologically classified into two types with different prognoses: high and low grade. We aimed to investigate the CT and MRI findings of astroblastomas by collecting studies with analyzable neuroimaging data and extracting the imaging features useful for tumor grading. METHODS We searched for reports of pathologically proven astroblastomas with analyzable neuroimaging data using PubMed, Scopus, and Embase. Sixty-five studies with 71 patients with astroblastomas met the criteria for a systematic review. We added eight patients from our hospital, resulting in a final study cohort of 79 patients. The proportion of high-grade tumors was compared in groups based on the morphology (typical and atypical) using Fisher's exact test. RESULTS High- and low-grade tumors were 35/71 (49.3%) and 36/71 (50.7%), respectively. There was a significant difference in the proportion of high-grade tumors based on the tumor morphology (typical morphology: high-grade = 33/58 [56.9%] vs. atypical morphology, 2/13 [15.4%], p = .012). The reviews of neuroimaging findings were performed using the images included in each article. The articles had missing data due to the heterogeneity of the collected studies. CONCLUSIONS Detailed neuroimaging features were clarified, including tumor location, margin status, morphology, CT attenuation, MRI signal intensity, and contrast enhancement pattern. The classification of tumor morphology may help predict the tumor's histological grade, contributing to clinical care and future oncologic research.
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Affiliation(s)
- Ryo Kurokawa
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Akira Baba
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Mariko Kurokawa
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Yoshiaki Ota
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Omar Hassan
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Aristides Capizzano
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - John Kim
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Timothy Johnson
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, Michigan, USA
| | - Ashok Srinivasan
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
| | - Toshio Moritani
- Division of Neuroradiology, Department of Radiology, University of Michigan, Ann Arbor, Michigan, USA
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2
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Bernasconi R, Eccher A, Girolami I, Boldrini M, Masotto B, Barresi V. Extra-axial anaplastic astroblastoma in a 67-year-old woman. Neuropathology 2019; 39:307-312. [PMID: 31206872 DOI: 10.1111/neup.12565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Revised: 05/02/2019] [Accepted: 05/07/2019] [Indexed: 11/30/2022]
Abstract
Astroblastoma is a rare glial neoplasia of the central nervous system. It is histologically defined by the presence of neoplastic cells with non- or slightly tapering processes arranged around blood vessels (astroblastic rosettes) and conventionally subdivided into well-differentiated and anaplastic. It commonly affects children and young adults, although cases and due to its superficial location in the brain cortex, it can mimic an extra-axial mass on magnetic resonance imagining. Herein, we describe a unique case of pure extra-axial anaplastic astroblastoma in an elderly woman. Awareness that astroblastoma may be also extra-axial and affect older subjects, may be helpful for its identification and differential diagnosis toward more common entities at this site and age of onset, and for appropriate therapeutic management as well.
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Affiliation(s)
- Riccardo Bernasconi
- Department of Diagnostics and Public Health, Section of Anatomic Pathology, University and Hospital Trust of Verona, Polyclinic G.B. Rossi, Verona, Italy
| | - Albino Eccher
- Department of Diagnostics and Public Health, Section of Anatomic Pathology, University and Hospital Trust of Verona, Polyclinic G.B. Rossi, Verona, Italy
| | - Ilaria Girolami
- Department of Diagnostics and Public Health, Section of Anatomic Pathology, University and Hospital Trust of Verona, Polyclinic G.B. Rossi, Verona, Italy
| | - Marcello Boldrini
- Department of Neurosciences, Unit of Neurosurgery, Hospital Trust of Verona, Verona, Italy
| | - Barbara Masotto
- Department of Neurosciences, Unit of Neurosurgery, Hospital Trust of Verona, Verona, Italy
| | - Valeria Barresi
- Department of Diagnostics and Public Health, Section of Anatomic Pathology, University and Hospital Trust of Verona, Polyclinic G.B. Rossi, Verona, Italy
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3
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Wood MD, Tihan T, Perry A, Chacko G, Turner C, Pu C, Payne C, Yu A, Bannykh SI, Solomon DA. Multimodal molecular analysis of astroblastoma enables reclassification of most cases into more specific molecular entities. Brain Pathol 2017; 28:192-202. [PMID: 28960623 DOI: 10.1111/bpa.12561] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2017] [Accepted: 09/14/2017] [Indexed: 12/26/2022] Open
Abstract
Astroblastoma is a rare and controversial glioma with variable clinical behavior. The diagnosis currently rests on histologic findings of a circumscribed glioma with astroblastomatous pseudorosettes and vascular hyalinization. Immunohistochemical studies have suggested different oncogenic drivers, such as BRAF p.V600E, but very few cases have been studied using genome-wide methodologies. Recent genomic profiling identified a subset of CNS embryonal tumors with astroblastoma-like morphology that harbored MN1 gene fusions, termed "CNS high-grade neuroepithelial tumors with MN1 alteration" (CNS-HGNET-MN1). To further characterize the genetic alterations that drive astroblastomas, we performed targeted next-generation sequencing (NGS) of 500 cancer-associated genes in a series of eight cases. We correlated these findings with break-apart fluorescence in situ hybridization (FISH) analysis of the MN1 locus and genome-wide DNA methylation profiling. Four cases showed MN1 alteration by FISH, including two pediatric cases that lacked other pathogenic alterations, and two adult cases that harbored other cancer-associated gene mutations or copy number alterations (eg, CDKN2A/B homozygous deletion, TP53, ATM and TERT promoter mutations). Three of these cases grouped with the CNS-HGNET-MN1 entity by methylation profiling. Two of four MN1 intact cases by FISH showed genetic features of either anaplastic pleomorphic xanthoastrocytoma (BRAF p.V600E mutation, CDKN2A/B homozygous deletion and TERT promoter mutation) or IDH-wildtype glioblastoma (trisomy 7, monosomy 10, CDK4 amplification and TP53, NRAS and TERT promoter mutations) and these cases had an aggressive clinical course. Two clinically indolent cases remained unclassifiable despite multimodal molecular analysis. We conclude that astroblastoma histology is not specific for any entity including CNS-HGNET-MN1, and that additional genetic characterization should be considered for astroblastomas, as a number of these tumors likely contain a methylation profile or genetic alterations that suggest classification as other tumor entities. Our heterogeneous molecular findings help to explain the clinical unpredictability of astroblastoma.
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Affiliation(s)
- Matthew D Wood
- Department of Pathology, Division of Neuropathology, University of California, San Francisco, CA
| | - Tarik Tihan
- Department of Pathology, Division of Neuropathology, University of California, San Francisco, CA
| | - Arie Perry
- Department of Pathology, Division of Neuropathology, University of California, San Francisco, CA.,Department of Neurological Surgery, University of California, San Francisco, CA
| | - Geeta Chacko
- Department of Pathology, Division of Neuropathology, Christian Medical College, Vellore, Tamil Nadu, India
| | - Clinton Turner
- Anatomical Pathology, LabPLUS Auckland City Hospital, Auckland, New Zealand
| | - Cunfeng Pu
- Department of Pathology, Allegheny General Hospital, Pittsburgh, PA
| | - Christopher Payne
- Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, PA
| | - Alexander Yu
- Department of Neurosurgery, Allegheny General Hospital, Pittsburgh, PA
| | - Serguei I Bannykh
- Department of Pathology and Laboratory Medicine, Cedars-Sinai Medical Center, Los Angeles, CA
| | - David A Solomon
- Department of Pathology, Division of Neuropathology, University of California, San Francisco, CA
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4
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Mallick S, Benson R, Venkatesulu B, Melgandi W, Rath GK. Patterns of care and survival outcomes in patients with astroblastoma: an individual patient data analysis of 152 cases. Childs Nerv Syst 2017; 33:1295-1302. [PMID: 28477040 DOI: 10.1007/s00381-017-3410-5] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Accepted: 04/07/2017] [Indexed: 01/19/2023]
Abstract
BACKGROUND Astroblastoma (AB) is a rare tumor with significant dilemma regarding diagnostic criteria, behavior, and optimum treatment. MATERIALS AND METHODS We searched PubMed, Google Search, and Cochrane Library for eligible studies with the following search words: astroblastoma, high-grade astroblastoma, and anaplastic astroblastoma till July 1, 2016, published in English language and collected data regarding age, sex, site of disease, pathological grade, treatment received, and survival. RESULTS Data of 152 patients were retrieved from 63 publications. Median age was 16 years (range 0-71). Females were affected twice more frequently than male (70.3 vs. 29.7%). Tumors were most commonly located in the frontal (39%) followed by parietal lobe (26.7%). Fifty-two and 25% of the patients had headache and seizure at presentation, 76.3% of the patients underwent a gross total resection, 41 out of 89 had a high-grade tumor, and 56 patients received adjuvant radiation with a median dose of 54 Gy (range 20-72). Adjuvant chemotherapy was used in 23 patients. Temozolomide was the most common drug used in 30% of the patients. A combination of cisplatin, etoposide with vincristine, or ifosfamide was used in 17%. Median follow-up duration was 37 months (range 1-238). Median progression-free survival and OS were 36 and 184 months, respectively. Patients with a higher-grade tumor had significantly worse OS with HR 5.260 and p = 0.001. Forty patients experienced local progression. Sixty-five percent patients underwent surgery while 50% underwent radiation as salvage. CONCLUSION AB has two distinct grades with higher-grade tumors having significantly poor survival. Maximal safe surgery followed by adjuvant radiation and temozolomide should be advocated for these tumors.
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Affiliation(s)
- Supriya Mallick
- Department of Radiation Oncology, All India Institute of Medical Sciences, New Delhi, India.
| | - Rony Benson
- Department of Radiation Oncology, All India Institute of Medical Sciences, New Delhi, India
| | | | - Wineeta Melgandi
- Department of Radiation Oncology, All India Institute of Medical Sciences, New Delhi, India
| | - Goura K Rath
- Department of Radiation Oncology, All India Institute of Medical Sciences, New Delhi, India
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5
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Cunningham DA, Lowe LH, Shao L, Acosta NR. Neuroradiologic characteristics of astroblastoma and systematic review of the literature: 2 new cases and 125 cases reported in 59 publications. Pediatr Radiol 2016; 46:1301-8. [PMID: 27048363 DOI: 10.1007/s00247-016-3607-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 01/30/2016] [Accepted: 03/03/2016] [Indexed: 12/12/2022]
Abstract
BACKGROUND Astroblastoma is a rare tumor of uncertain origin most commonly presenting in the cerebrum of children and young adults. The literature contains only case reports and small series regarding its radiologic features. This systematic review is the largest study of imaging findings of astroblastoma to date and serves to identify features that might differentiate it from other neoplasms. OBJECTIVE This study describes the imaging features of astroblastoma based on a systematic review of the literature and two new cases. MATERIALS AND METHODS We conducted a PubMed and Google Scholar database search that identified 59 publications containing 125 cases of pathology-confirmed astroblastoma, and we also added two new cases from our own institution. Data collected include patient age, gender, tumor location, morphology, calcifications and calvarial changes. We recorded findings on CT, MRI, diffusion-weighted imaging (DWI), MR spectroscopy, positron emission tomography (PET) and catheter angiography. RESULTS Age at diagnosis ranged 0-70 years (mean 18 years; median 14 years). Female-to-male ratio was 8:1. Of 127 cases, 66 reported CT, 78 reported MRI and 47 reported both findings. Not all authors reported all features, but the tumor features reported included supratentorial in 96% (122/127), superficial in 72% (48/67), well-demarcated in 96% (79/82), mixed cystic-solid in 93% (79/85), and enhancing in 99% (78/79). On CT, 84% (26/31) of astroblastomas were hyperattenuated, 73% (27/37) had calcifications and 7 cases reported adjacent calvarial erosion. Astroblastomas were hypointense on T1-W in 58% (26/45) and on T2-W in 50% (23/46) of MRI sequences. Peritumoral edema was present in 80% (40/50) of cases but was typically described as slight. Six cases included DWI findings, with 100% showing restricted diffusion. On MR spectroscopy, 100% (5/5) showed nonspecific tumor spectra with elevated choline and decreased N-acetylaspartate (NAA). PET revealed nonspecific reduced uptake of [F-18] 2-fluoro-2-deoxyglucose ((18)F-FDG) and increased uptake of [11C]-Methionine in 100% (3/3) of cases. Catheter angiography findings (n=12) were variable, including hypervascularity in 67%, arteriovenous shunting in 33% and avascular areas in 25%. CONCLUSION Astroblastomas occur most often in adolescent girls. Imaging often shows a supratentorial, superficial, well-defined, cystic-solid enhancing mass. On CT, most are hyperattenuated, have calcifications, and may remodel adjacent bone if superficial. MRI characteristically reveals a hypointense mass on T1-W and T2-W sequences with restricted diffusion. MR spectroscopy, PET and catheter angiography findings are nonspecific.
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Affiliation(s)
- Danielle A Cunningham
- University of Missouri-Kansas City School of Medicine, 2411 Holmes St., Kansas City, MO, 64108, USA.
| | - Lisa H Lowe
- University of Missouri-Kansas City School of Medicine, 2411 Holmes St., Kansas City, MO, 64108, USA
- Department of Radiology, Children's Mercy Hospital and Clinics, Kansas City, MO, USA
| | - Lei Shao
- University of Missouri-Kansas City School of Medicine, 2411 Holmes St., Kansas City, MO, 64108, USA
- Department of Pathology, Children's Mercy Hospital and Clinics, Kansas City, MO, USA
| | - Natasha R Acosta
- University of Missouri-Kansas City School of Medicine, 2411 Holmes St., Kansas City, MO, 64108, USA
- Department of Radiology, Truman Medical Center, Kansas City, MO, USA
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6
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Yuzawa S, Nishihara H, Tanino M, Kimura T, Moriya J, Kamoshima Y, Nagashima K, Tanaka S. A case of cerebral astroblastoma with rhabdoid features: a cytological, histological, and immunohistochemical study. Brain Tumor Pathol 2015; 33:63-70. [PMID: 26614252 DOI: 10.1007/s10014-015-0241-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Accepted: 11/17/2015] [Indexed: 01/03/2023]
Abstract
Astroblastoma is a rare neuroepithelial neoplasm of unknown origin, usually occurring in children and young adults. Here we report a case of astroblastoma with uncommon features in an 18-year-old female. The tumor was a well-circumscribed cystic and solid mass with marked gadolinium enhancement in the right frontal lobe. Cytological examination showed polarized monopolar cells with diminished cohesiveness. Tumor cells possessed eccentric round to oval nuclei with abundant eosinophilic cytoplasm, sometimes having cytoplasmic processes. Histopathologically, the tumor showed perivascular pseudorosettes with prominent vascular sclerosis. Foam cells were frequently infiltrated around blood vessels and among tumor cells. In some areas, a solid growth pattern of plump tumor cells with abundant inclusion-like eosinophilic cytoplasm showing rhabdoid appearance was observed. The immunohistochemical study revealed strong and diffuse positivity for vimentin and epithelial membrane antigen. Tumor cells were focally positive for glial fibrillary acidic protein and cytokeratin AE1/AE3. Nuclear immunoreactivity for INI1 protein was evident. The Ki-67 labeling index was 10.8%. This tumor was finally diagnosed as low-grade astroblastoma and the patient had no evidence of recurrence without postoperative radiotherapy or chemotherapy during the last 6 months of follow-up. This report describes novel cytological, histopathological, and immunohistochemical features of the rare tumor.
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Affiliation(s)
- Sayaka Yuzawa
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Hiroshi Nishihara
- Department of Translational Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Translational Research Laboratory, Hokkaido University Hospital, Clinical Research and Medical Innovation Center, Sapporo, Japan
| | - Mishie Tanino
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Taichi Kimura
- Department of Translational Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.,Translational Research Laboratory, Hokkaido University Hospital, Clinical Research and Medical Innovation Center, Sapporo, Japan
| | - Jun Moriya
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo, 060-8638, Japan
| | - Yuuta Kamoshima
- Sapporo Azabu Neurosurgical Hospital, Sapporo, Japan.,Department of Neurosurgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | | | - Shinya Tanaka
- Department of Cancer Pathology, Hokkaido University Graduate School of Medicine, North 15, West 7, Kita-ku, Sapporo, 060-8638, Japan. .,Department of Translational Pathology, Hokkaido University Graduate School of Medicine, Sapporo, Japan.
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7
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Ahmed KA, Allen PK, Mahajan A, Brown PD, Ghia AJ. Astroblastomas: A Surveillance, Epidemiology, and End Results (SEER)-Based Patterns of Care Analysis. World Neurosurg 2014; 82:e291-7. [DOI: 10.1016/j.wneu.2013.10.035] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2013] [Revised: 09/18/2013] [Accepted: 10/12/2013] [Indexed: 10/26/2022]
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8
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Fu YJ, Taniguchi Y, Takeuchi S, Shiga A, Okamoto K, Hirato J, Nobusawa S, Nakazato Y, Kakita A, Takahashi H. Cerebral astroblastoma in an adult: An immunohistochemical, ultrastructural and genetic study. Neuropathology 2012; 33:312-9. [DOI: 10.1111/j.1440-1789.2012.01351.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2012] [Accepted: 08/23/2012] [Indexed: 12/27/2022]
Affiliation(s)
- Yong-Juan Fu
- Department of Pathology; University of Niigata; Niigata; Japan
| | | | - Shigekazu Takeuchi
- Department of Neurosurgery; Nagaoka Chuo General Hospital; Nagaoka; Japan
| | - Atsushi Shiga
- Department of Pathology; University of Niigata; Niigata; Japan
| | - Kouichirou Okamoto
- Department of Neurosurgery; Brain Research Institute; University of Niigata; Niigata; Japan
| | - Junko Hirato
- Department of Pathology; Gunma University Hospital; Japan
| | - Sumihito Nobusawa
- Department of Human Pathology; Gunma University Graduate School of Medicine; Maebashi; Japan
| | - Yoichi Nakazato
- Department of Human Pathology; Gunma University Graduate School of Medicine; Maebashi; Japan
| | - Akiyoshi Kakita
- Department of Pathology; University of Niigata; Niigata; Japan
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9
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Clinical features and post-surgical outcome of patients with astroblastoma. J Clin Neurosci 2011; 18:750-4. [DOI: 10.1016/j.jocn.2010.11.007] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2010] [Accepted: 11/02/2010] [Indexed: 11/20/2022]
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10
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Abstract
OBJECTIVE Astroblastoma is an unusual brain tumor in childhood. Tumor usually arises from cerebral hemispheres. This large tumor is well-demarcated, lobulated, solid or cystic, and therefore, may resemble glioblastoma. Histopathologically, there are two types of astroblastoma: well-differentiated (low-grade) or anaplastic (high-grade). In low-grade astroblastoma, treatment of choice is complete excision. This type of tumor usually does not recur. However, anaplastic tumors can recur despite surgery, radiation, and chemotherapy and may be problematic for clinician. CASE REPORT A 7-year-old female patient presented with an acute onset of vomiting and seizure. Magnetic resonance imaging study revealed a large mass in the left parieto-occipital region. She underwent total excision of the tumor. Histopathologically, the tumor was an anaplastic astroblastoma. Her adjuvant treatment was planned to consist of radiation therapy and cisplatin-based chemotherapy. However, the tumor recurred early in the course, and she died 18 months after diagnosis. CONCLUSION High-grade astroblastomas behave like glioblastoma, as emphasized in this case report. Local control of this type of tumor seems difficult despite surgery, radiation therapy, and cisplatin-based chemotherapy.
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11
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Fan YS, Lui PCW, Tam FKY, Hung KN, Ng HK, Leung SY. A 33-year-old Chinese woman with a left frontal tumor. Brain Pathol 2009; 19:337-40. [PMID: 19291001 DOI: 10.1111/j.1750-3639.2009.00277.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Abstract
Rhabdoid tumor cells are typically observed in atypical teratoid/rhabdoid tumor (AT/RT) but may also be seen in meningioma,glioma, melanoma, rhabdomyosarcoma and metastatic carcinoma.We present an astroblastoma with unusual rhabdoid features which is rarely described in the English literature. Apart from the rhabdoid tumor cells, all the histopathological features typical for astroblastoma are present in this case. These features include pseudopapillary arrangement, astroblastic pseudorosettes, perivascular hyalinization and calcifications, absence of fibrillary background and a pushing tumor border. The tumor cells display a multilineage immunohistochemical profile. In addition, diffuse and strong membranous and cytoplasmic dot-like pattern is appreciated with epithelial membrane antigen (EMA). The diagnosis of astroblastoma is also well supported by the age of presentation, anatomical location and radiological features of the tumor.We believe that on top of the above-mentioned unusual tumors with rhabdoid cells, astroblastoma should also be considered in the list of differential diagnosis.
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Affiliation(s)
- Yuen Shan Fan
- Department of Pathology, Queen Mary Hospital, The University of Hong Kong, Hong Kong, China
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12
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Astroblastoma with rhabdoid features and favorable long-term outcome: Report of a case with a 12-year follow-up. Pathol Res Pract 2008; 204:345-51. [DOI: 10.1016/j.prp.2007.12.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2007] [Revised: 11/06/2007] [Accepted: 12/06/2007] [Indexed: 11/21/2022]
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13
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Hirano H, Yunoue S, Kaji M, Tsuchiya M, Arita K. Consecutive histological changes in an astroblastoma that disseminated to the spinal cord after repeated intracranial recurrences: a case report. Brain Tumor Pathol 2008; 25:25-31. [PMID: 18415663 DOI: 10.1007/s10014-007-0224-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2007] [Accepted: 10/09/2007] [Indexed: 10/22/2022]
Abstract
A 17-year-old male patient underwent surgery five times (four consecutive intracranial tumor removal surgeries and a final spinal tumor removal surgery). After the third surgery, this case was reported as a low-grade astroblastoma that is characterized by perivascular pseudorosettes consisting of elongated tumor cells arranged around the blood vessels. However, the fourth and fifth surgical specimens demonstrated very interesting histological changes in the astroblastoma. Through the course of relapses, the constituent cells of the astroblastic perivascular rosettes became smaller and rounder, and a multilayered cell arrangement was observed. The nucleus-to-cytoplasm ratio increased, and the compact intervascular cells ultimately lost glial fibrillary acidic protein (GFAP) expression. These undifferentiated cells showed high MIB-1 indices and an increased olig2 index. On the other hand, the cells in all the surgical specimens were positive for certain neuronal markers such as NSE, TUJ1, and nestin. Some astroblastomas may be more immature than the usual astrocytes; however, it is necessary to study more cases to confirm this.
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Affiliation(s)
- Hirofumi Hirano
- Department of Neurosurgery, Graduate School of Medical and Dental Sciences, Kagoshima University, 8-35-1 Sakuragaoka, Kagoshima, 890-8520, Japan.
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