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目的:研究发生于颞下颌关节(temporomandibular joint,TMJ)的弥漫型巨细胞瘤的CT影像特点。方法:回顾性分析8例经病理检查证实、发生于TMJ区的弥漫型巨细胞瘤的CT图像。结果:8例中,男女比例为1∶1,平均年龄45.1岁,所有8例病变都表现为膨胀性生长的软组织肿块,且增强后有不同程度的强化。其中,6例肿块密度增高,关节间隙增宽。髁突骨质改变7例,另外6例颞骨关节面骨质破坏并侵犯颅内。结论:发生于TMJ的弥漫型巨细胞瘤的CT影像学特征表现为较高密度的软组织肿块,伴强化,髁突及颅底骨质破坏并侵犯颅内。
Objective: To study CT features of diffuse giant cell tumor occurring in the temporomandibular joint (TMJ). Methods: CT images of 8 patients with diffuse giant cell tumor confirmed by pathology in TMJ were retrospectively analyzed. Results: Among the 8 cases, the ratio of male to female was 1: 1, the mean age was 45.1 years. All 8 cases showed swollen soft tissue mass with enhanced enhancement. Among them, 6 cases of lumps increased density, widened joint space. Condylar bone changes in 7 cases, while the other 6 cases of temporal bone surface destruction of bone and violated intracranial. CONCLUSIONS: CT imaging of diffuse giant cell tumor occurring in TMJ manifests as a higher density of soft tissue mass with enhanced condyle and skull bone destruction and invades the intracranial.