颞下颌关节滑膜软骨瘤病的磁共振成像特征
Magnetic resonance imaging characteristics of synovial chondromatosis of the temporomandibular joint.
作者信息
Kim Hyung-Gon, Park Kwang-Ho, Huh Jong-Ki, Song Yeong-Bok, Choi Hee-Soo
机构信息
Department of Oral and Maxillofacial Surgery, Yongdong Severance Hospital, Yonsei University, Yongdong P.O. Box 1217, Seoul 135-720, Korea.
出版信息
J Orofac Pain. 2002 Spring;16(2):148-53.
AIMS
To determine the characteristic magnetic resonance imaging (MRI) findings of synovial chondromatosis of the temporomandibular joint (TMJ).
METHODS
MRI was carried out in 11 cases of synovial chondromatosis of the TMJ, which had been confirmed surgically and histologically.
RESULTS
Severe bony changes were not apparent. One or more hypointensive loose bodies were seen in 7 of the 11 cases. A considerable amount of synovial fluid, often with capsular expansion, was a common finding.
CONCLUSION
A diagnosis of synovial chondromatosis of the TMJ must be considered when the amount of synovial fluid is abnormally large and the disc position is fairly normal, as seen on closed- and open-mouth MRI of the TMJ, without any associated severe changes in disc shape or bony structure.
目的
确定颞下颌关节滑膜软骨瘤病的特征性磁共振成像（MRI）表现。
方法
对11例经手术及组织学证实的颞下颌关节滑膜软骨瘤病患者进行了MRI检查。
结果
未见明显严重骨质改变。11例中有7例可见一个或多个低信号游离体。大量关节液，常伴有关节囊扩张，是常见表现。
结论
当颞下颌关节闭口和开口MRI显示关节液量异常增多且盘位置基本正常，而盘形态或骨质结构无任何相关严重改变时，必须考虑颞下颌关节滑膜软骨瘤病的诊断。
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