| Molun Shen,Ling Zhu,Hongbo Yu,Lei Zhang,Xudong Wang. Comparison of computed tomography and magnetic resonance imaging for the detection of mandibular condylar osteochondroma. Oncol Transl Med, 2018, 4: 108-115. |
| Comparison of computed tomography and magnetic resonance imaging for the detection of mandibular condylar osteochondroma |
| Received:April 14, 2018 Revised:June 24, 2018 |
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| KeyWord:mandibular condyle; osteochondroma; computed tomography (CT); magnetic resonance imaging (MRI) |
| Author Name | Affiliation | E-mail | | Molun Shen | Hefei Stomatological Hospital | 51932808@qq.com | | Ling Zhu | Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine | | | Hongbo Yu | Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine | | | Lei Zhang | Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine | | | Xudong Wang | Shanghai Ninth People’s Hospital, Shanghai Jiao Tong University School of Medicine | xudongwang70@hotmail.com |
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| Abstract: |
| Objective The purpose of this study was to compare computed tomography (CT) and magnetic
resonance imaging (MRI) for the detection of mandibular condylar osteochondroma.
Methods Preoperative CT and MRI of 33 patients with unilateral condylar osteochondroma were
reviewed. The morphology, location, continuity with the parent bone, cartilage cap, perichondrium of
tumors, and changes in soft and hard tissues adjacent to the lesions were investigated by two reviewers.
Data were analyzed using McNemar test. A P value < 0.05 was considered significant.
Results Among the 33 condylar osteochondromas, 11 were of the diffuse type, 10 were of the sessile
type, and 12 were of the pedunculated type. Continuity with the cortex and marrow of the host condyle was
observed on both CT and MRI. Both modalities had identical detection rates of surface reconstruction of the
temporal bone joint, condylar dislocation, and pseudarthrosis formation. However, MRI showed significantly
higher detection rates of the cartilage cap and perichondrium than CT (P < 0.05). Furthermore, MRI showed
ipsilateral and contralateral temporo-mandibular joint (TMJ) disc displacement in 4 cases and 6 cases,
respectively, and ipsilateral and contralateral TMJ effusion in 20 cases and 14 cases, respectively.
Conclusion CT can intuitively display the morphology and spatial location of condylar osteochondromas
through three-dimensional reconstruction. MRI may be superior to CT in the detection of cartilage cap,
perichondrium of the condylar osteochondroma, and changes in the TMJ and adjacent soft tissues. |
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