Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign
Introduction: Meningiomas and schwannomas are common intradural-extramedullary spinal tumors. Because of their different origins, they necessitate different surgical procedures, which makes preoperative diagnosis important. Methods: In this study, clinical and imaging data for 62 patients diagnosed...
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| Language: | English |
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The Japanese Society for Spine Surgery and Related Research
2025-01-01
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| Series: | Spine Surgery and Related Research |
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| Online Access: | https://www.jstage.jst.go.jp/article/ssrr/9/1/9_2024-0059/_pdf/-char/en |
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| author | Yu Toda Masashi Miyazaki Takaomi Kobayashi Yoshiaki Egashira Deokcheol Lee Hideaki Hamanaka Shigeo Ueda Hiromu Yoshizato Masatsugu Tsukamoto Tomohito Yoshihara Hirohito Hirata Hiroaki Konishi Tatsuya Tanaka Koji Otani Masaaki Mawatari Tadatsugu Morimoto |
| author_facet | Yu Toda Masashi Miyazaki Takaomi Kobayashi Yoshiaki Egashira Deokcheol Lee Hideaki Hamanaka Shigeo Ueda Hiromu Yoshizato Masatsugu Tsukamoto Tomohito Yoshihara Hirohito Hirata Hiroaki Konishi Tatsuya Tanaka Koji Otani Masaaki Mawatari Tadatsugu Morimoto |
| author_sort | Yu Toda |
| collection | DOAJ |
| description | Introduction: Meningiomas and schwannomas are common intradural-extramedullary spinal tumors. Because of their different origins, they necessitate different surgical procedures, which makes preoperative diagnosis important.
Methods: In this study, clinical and imaging data for 62 patients diagnosed with either meningioma or schwannoma across multiple institutions were analyzed.
Results: The average age of patients was older (67.6 vs. 58.9 years), and the frequency of females was higher (72% vs. 46%) for meningioma than for schwannoma. Meningiomas were mostly found in the thoracic region (84%), whereas schwannomas were commonly located in the lumbar region (54%). For each tumor type, specific radiological findings were identified. For meningiomas, findings included the ginkgo leaf sign (GLS) (sensitivity 58%, specificity 100%), oval shape (sensitivity 84%, specificity 63%), dural tail sign (DTS) (sensitivity 75%, specificity 100%), and intertumoral calcification (sensitivity 39%, specificity 100%). Combining GLS and DTS greatly improved sensitivity to 89% (specificity 100%). For schwannomas, specific findings included a lobule shape (sensitivity 25%, specificity 95%), dumbbell shape (sensitivity 54%, specificity 100%), and cystic changes (sensitivity 54%, specificity 97%).
Conclusions: GLS may be a specific radiological feature for meningiomas and can aid in diagnosis when combined with DTS. Understanding these distinct radiological characteristics is valuable for preoperative differential diagnosis of intradural-extramedullary spinal tumors. |
| format | Article |
| id | doaj-art-72081c6ed2084c13b68fb50156d029d9 |
| institution | Kabale University |
| issn | 2432-261X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | The Japanese Society for Spine Surgery and Related Research |
| record_format | Article |
| series | Spine Surgery and Related Research |
| spelling | doaj-art-72081c6ed2084c13b68fb50156d029d92025-02-09T23:30:07ZengThe Japanese Society for Spine Surgery and Related ResearchSpine Surgery and Related Research2432-261X2025-01-0191455010.22603/ssrr.2024-00592024-0059Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf SignYu Toda0Masashi Miyazaki1Takaomi Kobayashi2Yoshiaki Egashira3Deokcheol Lee4Hideaki Hamanaka5Shigeo Ueda6Hiromu Yoshizato7Masatsugu Tsukamoto8Tomohito Yoshihara9Hirohito Hirata10Hiroaki Konishi11Tatsuya Tanaka12Koji Otani13Masaaki Mawatari14Tadatsugu Morimoto15Department of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Oita UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Radiology, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, University of MiyazakiDepartment of Orthopaedic Surgery, University of MiyazakiShin-Aikai Spine Center, Katano HospitalDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopedic Surgery, Nagasaki Rosai HospitalDepartment of Neurosurgery, International University of Health and Welfare Narita HospitalDepartment of Orthopedic Surgery, Fukushima Medical University School of MedicineDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityDepartment of Orthopaedic Surgery, Faculty of Medicine, Saga UniversityIntroduction: Meningiomas and schwannomas are common intradural-extramedullary spinal tumors. Because of their different origins, they necessitate different surgical procedures, which makes preoperative diagnosis important. Methods: In this study, clinical and imaging data for 62 patients diagnosed with either meningioma or schwannoma across multiple institutions were analyzed. Results: The average age of patients was older (67.6 vs. 58.9 years), and the frequency of females was higher (72% vs. 46%) for meningioma than for schwannoma. Meningiomas were mostly found in the thoracic region (84%), whereas schwannomas were commonly located in the lumbar region (54%). For each tumor type, specific radiological findings were identified. For meningiomas, findings included the ginkgo leaf sign (GLS) (sensitivity 58%, specificity 100%), oval shape (sensitivity 84%, specificity 63%), dural tail sign (DTS) (sensitivity 75%, specificity 100%), and intertumoral calcification (sensitivity 39%, specificity 100%). Combining GLS and DTS greatly improved sensitivity to 89% (specificity 100%). For schwannomas, specific findings included a lobule shape (sensitivity 25%, specificity 95%), dumbbell shape (sensitivity 54%, specificity 100%), and cystic changes (sensitivity 54%, specificity 97%). Conclusions: GLS may be a specific radiological feature for meningiomas and can aid in diagnosis when combined with DTS. Understanding these distinct radiological characteristics is valuable for preoperative differential diagnosis of intradural-extramedullary spinal tumors.https://www.jstage.jst.go.jp/article/ssrr/9/1/9_2024-0059/_pdf/-char/enmeningiomaschwannomaintradural-extramedullary spinal tumor |
| spellingShingle | Yu Toda Masashi Miyazaki Takaomi Kobayashi Yoshiaki Egashira Deokcheol Lee Hideaki Hamanaka Shigeo Ueda Hiromu Yoshizato Masatsugu Tsukamoto Tomohito Yoshihara Hirohito Hirata Hiroaki Konishi Tatsuya Tanaka Koji Otani Masaaki Mawatari Tadatsugu Morimoto Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign Spine Surgery and Related Research meningioma schwannoma intradural-extramedullary spinal tumor |
| title | Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign |
| title_full | Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign |
| title_fullStr | Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign |
| title_full_unstemmed | Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign |
| title_short | Radiographic Features of Spinal Meningioma and Schwannoma: A Novel Specific Feature―Ginkgo Leaf Sign |
| title_sort | radiographic features of spinal meningioma and schwannoma a novel specific feature ginkgo leaf sign |
| topic | meningioma schwannoma intradural-extramedullary spinal tumor |
| url | https://www.jstage.jst.go.jp/article/ssrr/9/1/9_2024-0059/_pdf/-char/en |
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