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Rigsby RK, Brahmbhatt P, Desai AB, Bathla G, Ebner BA, Gupta V, Vibhute P, Agarwal AK. Newly Recognized CNS Tumors in the 2021 World Health Organization Classification: Imaging Overview with Histopathologic and Genetic Correlation. AJNR Am J Neuroradiol 2023; 44:367-380. [PMID: 36997287 PMCID: PMC10084895 DOI: 10.3174/ajnr.a7827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/14/2022] [Indexed: 04/01/2023]
Abstract
In 2021, the World Health Organization released an updated classification of CNS tumors. This update reflects the growing understanding of the importance of genetic alterations related to tumor pathogenesis, prognosis, and potential targeted treatments and introduces 22 newly recognized tumor types. Herein, we review these 22 newly recognized entities and emphasize their imaging appearance with correlation to histologic and genetic features.
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Affiliation(s)
- R K Rigsby
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
| | - P Brahmbhatt
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
| | - A B Desai
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
| | - G Bathla
- Department of Radiology (G.B.), Mayo Clinic, Rochester, Minnesota
| | - B A Ebner
- Department of Laboratory Medicine and Pathology (B.A.E.), Mayo Clinic, Rochester, Minnesota
| | - V Gupta
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
| | - P Vibhute
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
| | - A K Agarwal
- From the Department of Radiology (R.K.R., P.B., A.B.D., V.G., P.V., A.K.A.), Mayo Clinic, Jacksonville, Florida
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Wolf T, Coca AH, Weingertner N, Chenard MP, Meurgey A, Reita D, Pencreach E, Varlet P, Entz-Werlé N, Lhermitte B. All pineal tumors expressing germ cell tumor markers are not necessarily germ cell tumors: histopathological and molecular study of a midline primary intracranial sarcoma DICER1-mutant. Virchows Arch 2023; 482:431-435. [PMID: 36307659 DOI: 10.1007/s00428-022-03440-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 10/18/2022] [Accepted: 10/21/2022] [Indexed: 11/29/2022]
Abstract
Primary intracranial sarcoma DICER1-mutant is a rare and newly recognized tumor type introduced in the 2021 WHO Classification of Central Nervous System Tumors. It is defined as a spindle cell sarcoma dysplaying eosinophilic intracytoplasmic globules, myogenic differentiation, and DICER1 gene mutation, either somatic or germline. Most reported cases were hemispheric except one, recently described in the pineal region. Here, we report the case of a 12 year-old boy with a pineally located tumor. Despite midline location, poorly differenciated morphology and germ cell marker expression, the association of DICER1 and NF1 hotspot mutations and a specific DNA methylation signature finally lead to the diagnosis of primary intracranial sarcoma DICER1-mutant instead of germ cell tumor. Furthermore, our molecular exploratory results involved a pathway, which was not previously evidenced in those DICER1 mutated cerebral sarcoma that is the canonical Wnt signaling driving likely a part of oncogenesis in this newly described pineal entity.
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Affiliation(s)
- Thibaut Wolf
- Department of Pathology, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France
| | - Andres Hugo Coca
- Neurosurgery Department, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France
| | - Noelle Weingertner
- Department of Pathology, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France
| | - Marie Pierre Chenard
- Department of Pathology, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France
| | | | - Damien Reita
- Department of Molecular Biology and Oncobiology, University Hospital of Strasbourg, 67098, Cedex, France
| | - Erwan Pencreach
- Department of Molecular Biology and Oncobiology, University Hospital of Strasbourg, 67098, Cedex, France
| | - Pascale Varlet
- Neuropathology department, Sainte-Anne University Hospital, 75674, Paris Cedex 14, France
| | - Natacha Entz-Werlé
- Department of Pediatric Onco-Hematology, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France
| | - Benoît Lhermitte
- Department of Pathology, University Hospital of Strasbourg, 67098, Strasbourg Cedex, France.
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