Deahl S T, Ruprecht A
Department of Oral Pathology, Radiology and Medicine, University of Iowa.
Oral Surg Oral Med Oral Pathol. 1991 Sep;72(3):371-4. doi: 10.1016/0030-4220(91)90235-5.
Asymptomatic loose bodies were detected in the temporomandibular joint of a 62-year-old woman during an examination before comprehensive dental care. The radiologic interpretation was synovial chondrometaplasia (synovial osteochondromatosis). A histologic diagnosis was not obtained, because surgery was unwarranted in view of the lack of symptoms and the benign differential diagnosis. Review of the literature revealed 62 reported cases of temporomandibular joint chondrometaplasia, all of which included one or more of the following: swelling, pain, joint noise, and limited mandibular movement. These reports have described this entity as a rare lesion, but the rate of reports has increased, perhaps because of greater practitioner awareness and increased sensitivity of diagnostic tests.
在一位62岁女性接受全面口腔护理前的检查中，发现其颞下颌关节存在无症状的游离体。影像学诊断为滑膜软骨化生（滑膜骨软骨瘤病）。由于缺乏症状且鉴别诊断为良性，故未进行手术，因此未获得组织学诊断。文献回顾显示，已有62例颞下颌关节软骨化生的报道，所有病例均出现以下一种或多种症状：肿胀、疼痛、关节弹响和下颌运动受限。这些报道称该病症为罕见病变，但报道率有所上升，这可能是由于从业者的认知度提高以及诊断测试的敏感性增强。
