Case Report
Copyright ©The Author(s) 2021. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Clin Cases. Feb 16, 2021; 9(5): 1111-1118
Published online Feb 16, 2021. doi: 10.12998/wjcc.v9.i5.1111
Imaging characteristics of a rare case of monostotic fibrous dysplasia of the sacrum: A case report
Xin-Xin Liu, Xin Xin, Yu-Hong Yan, Xiao-Wen Ma
Xin-Xin Liu, Yu-Hong Yan, Xiao-Wen Ma, MRI Department, Honghui Hospital, Xi'an Jiaotong University, Xi'an 710054, Shaanxi Province, China
Xin Xin, Department of Orthopaedics, Ankang Center Hospital, Ankang 725000, Shaanxi Province, China
Author contributions: Xin X and Yan YH contributed to the literature search; Liu XX contributed to design of the research and writing of the manuscript; Ma XW supervised the study and revised the manuscript. All authors have read and approved the final manuscript.
Informed consent statement: Informed written consent was obtained from the patient for publication of this report and any accompanying images.
CARE Checklist (2016) statement: The authors have read the CARE Checklist (2016), and the manuscript was prepared and revised according to the CARE Checklist (2016).
Open-Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Xiao-Wen Ma, MSc, Professor, MRI Department, Honghui Hospital, Xi'an Jiaotong University, No. 555 Youyi East Road, Beilin District, Xi'an 710054, Shaanxi Province, China. yxmxw@126.com
Received: August 29, 2020
First decision: November 3, 2020
Revised: November 14, 2020
Accepted: December 6, 2020
Article in press: December 6, 2020
Published online: February 16, 2021
Core Tip

Core Tip: This report presents a rare case of monostotic fibrous dysplasia (MFD) involving the sacrum. The imaging manifestations of MFD include expansile lesions, ground glass opacity, and sclerotic rims. Most lesions show iso-low signal intensity on T1WI and iso-high signal intensity on T2WI. These features can provide a suggestive diagnosis to distinguish MFD from giant cell tumour, aneurysmal bone cyst, and vertebral haemangioma. Accurate diagnosis of MFD in the spine is of great value for clinicians to choose an appropriate treatment.