Dumbbell-shaped meningioma of Meckel's cave mimicking trigeminal schwannoma: A case report

Chun-Pi Chang; Cheng-Siu Chang; Meng-Yin Yang; Chiung-Chyi Shen

doi:10.1016/j.ijscr.2022.107369

Dumbbell-shaped meningioma of Meckel's cave mimicking trigeminal schwannoma: A case report

Int J Surg Case Rep. 2022 Aug:97:107369. doi: 10.1016/j.ijscr.2022.107369. Epub 2022 Jul 5.

Authors

Chun-Pi Chang¹, Cheng-Siu Chang², Meng-Yin Yang³, Chiung-Chyi Shen⁴

Affiliations

¹ Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, ROC; Institute of Biomedical Sciences, National Chung Hsing University, Taichung, Taiwan, ROC.
² Department of Neurosurgery, Chung-Shan Medical University Hospital School of Medicine, Taichung, Taiwan, ROC; Institute of Medicine, Chung-Shan Medical University, Taichung, Taiwan, ROC.
³ Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, ROC; Department of Neurosurgery, Tri-Service General Hospital, National Defense Medical Center, Taipei, Taiwan, ROC; Department of Neurosurgery, Jan-Ai General Hospital, Taichung 412, Taiwan, ROC; College of Nursing, Central Taiwan University of Science and Technology, Taichung 406, Taiwan, ROC.
⁴ Department of Neurosurgery, Neurological Institute, Taichung Veterans General Hospital, Taichung, Taiwan, ROC; Department of Physical Therapy, Hung kuang University, Taichung, Taiwan, ROC; Basic Medical Education, Central Taiwan University of Science and Technology, Taichung, Taiwan, ROC. Electronic address: ccshen@vghtc.gov.tw.

Abstract

Introduction and importance: Several meningioma cases arising through Meckel's cave (MC) at the middle and posterior fossa have been reported. However, few relevant meningiomas have been observed with a dumbbell shape.

Presentation of case: We report a rare case of a 36-year-old woman with a meningioma of MC with a typical dumbbell-shaped, schwannoma-like presentation on magnetic resonance imaging (MRI), resulting in a misleading differential diagnosis.

Clinical discussion: In this case report, we discuss the characteristics of meningioma of MC observed on MRI and our surgical approach to this condition.

Conclusion: This tumor was able to mimic a trigeminal schwannoma both clinically and radiographically. This case report has been reported in line with the SCARE 2020 criteria [1].

Keywords: Case report; Dumbbell-shaped meningioma; Endoscopy; Meckel's cave; Trigeminal schwannoma.