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Recurrent temporal bone tenosynovial giant cell tumor with chondroid metaplasia: the use of imaging to assess recurrence

机译:复发性颞骨腱鞘巨细胞瘤伴软骨样化变:利用影像学评估复发

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摘要

Tenosynovial giant cell tumor (TGCT) is a benign proliferative lesion of unclear etiology. It is predominantly monoarticular and involves the synovium of the joint, tendon sheath, and bursa. TGCT of the temporomandibular joint (TMJ) is rare and aggressive resulting in destruction of surrounding structures. The diagnosis may be suggested by imaging, mainly by the MR features and PET/CT, and confirmed by histopathology. We describe the case of a 50-year-old man who presented with right-sided hearing loss, tinnitus and TMJ pain. Pathology revealed tenosynovial giant cell tumor with chondroid metaplasia. Six years later he developed a recurrence, which was documented to our knowledge for the first time with CT, MR and FDG PET/CT imaging.
机译:腱鞘巨细胞瘤(TGCT)是病因不清楚的良性增生性病变。它主要是单关节的,涉及关节,腱鞘和滑囊的滑膜。颞下颌关节(TMJ)的TGCT罕见且具有侵略性,会破坏周围结构。诊断可能通过影像学提示,主要是通过MR特征和PET / CT,并通过组织病理学证实。我们描述了一个患有右侧听力下降,耳鸣和TMJ疼痛的50岁男性的病例。病理显示腱鞘巨细胞瘤伴软骨样化生。六年后,他出现了复发,据我们所知,这是第一次通过CT,MR和FDG PET / CT成像进行记录。

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