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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2023; 33(02): 150-156
DOI: 10.1055/s-0042-1760363
Original Article

Comparison of MRI Findings among Osteofibrous Dysplasia, Fibrous Dysplasia, and NonOssifying Fibroma of the Long Bone

Hiroki Kato
1   Department of Radiology, Gifu University, Gifu, Japan
,
Masaya Kawaguchi
1   Department of Radiology, Gifu University, Gifu, Japan
,
Rena Miyase
1   Department of Radiology, Gifu University, Gifu, Japan
,
Ken Iwashima 
1   Department of Radiology, Gifu University, Gifu, Japan
,
Akihito Nagano 
2   Department of Orthopedic Surgery, Gifu University, Gifu, Japan
,
Masayuki Matsuo
1   Department of Radiology, Gifu University, Gifu, Japan
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Abstract

Background The characteristics of magnetic resonance imaging (MRI) findings among osteofibrous dysplasia (OFD), fibrous dysplasia (FD), and nonossifying fibroma (NOF) have yet to be determined.

Aims This study determines the differences of MRI features among OFD, FD, and NOF of the long bone.

Patients and Methods This study included 39 patients including 10 OFD, 13 with FD, and 16 with NOF of the long bone. All patients underwent preoperative MRI and histological examination. We retrospectively reviewed the MRIs and compared the imaging findings among the three pathologies.

Results The maximum diameter was significantly different among OFD (47.0 ± 18.6 mm), FD (59.0 ± 35.0 mm), and NOF (33.3 ± 15.0 mm) (p < 0.05). Multiplicity (60%, p < 0.01), eccentric distribution (100%, p < 0.05), septation (70%, p < 0.01), homogeneous intensity on T2-weighted images (70%, p < 0.01), homogeneous contrast enhancement (63%, p < 0.05), and intense contrast enhancement (88%, p < 0.01) were significantly more frequent in OFD. Centric distribution (69%, p < 0.01), cyst formation (54%, p < 0.01), and fluid-fluid level formation (31%, p < 0.01) were significantly more frequent in FD. Eccentric distribution (100%, p < 0.01), heterogeneous on T2-weighted images (100%, p < 0.01), predominant hypointensity on T2-weighted images (44%, p < 0.01), and the presence of intralesional hypointensity on T2-weighted images (88%, p < 0.01) were significantly more frequent in NOF.

Conclusion MRI features could differentiate OFD, FD, and NOF of the long bone.

Keywords

MRI - osteofibrous dysplasia - fibrous dysplasia - nonossifying fibroma


Publikationsverlauf

Artikel online veröffentlicht:
13. Januar 2023

© 2023. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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