• Zhicheng Huang, Dongqin Dai, and Guangcai Tang.
• Department of Radiology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, China.
• Medicine (Baltimore). 2022 Oct 21; 101 (42): e31355e31355.

RationaleSolitary fibrous tumor (SFT) is a rare mesenchymal spindle cell tumor. SFT in the central nervous system (CNS) is rare. This case reports rare magnetic resonance imaging (MRI) findings of intracranial SFT (ISFT).Patient ConcernsWe report a 47-year-old female patient who was found to have weakness in her right limb with walking instability 2 months before the visit.DiagnosesBased on imaging, the provisional diagnosis was meningioma. Postsurgical histopathological diagnosis confirmed World Health Organization (WHO) grade I SFT/hemangiopericytoma (HPC).InterventionsThe lesion was totally excised. The patient improved remarkably after the operation, without any signs of associated limb movement disorder.OutcomesNo local recurrence or metastases were observed in the follow-up 3 months after the surgery.LessonsIntracranial SFT is a rare mesenchymal tumor. Due to different tumor components, imaging manifestations are diverse and lack of characteristics, so preoperative diagnosis is challenging. Our case provides a rare ISFT with significantly decreased signal intensity in T2 weighted images (T2WI), which is an important supplement to the rare imaging findings of intracranial SFT.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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