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目的:研究颌骨骨软骨瘤的CBCT影像学表现,为该病的诊断提供参考依据。方法:对26例颌骨骨软骨瘤的临床及CBCT影像学资料进行分析。结果:颌骨骨软骨瘤发病部位以髁突多见(24例),其余2例分别位于喙突、颧骨。骨软骨瘤CBCT表现为颌骨不规则增生,形态多样,生长方向各异。增生物结构可分为3型:1增生物为类骨质样结构,骨皮质、骨松质分别与颌骨相连(17例);2增生物密度类似骨皮质,无骨小梁结构(6例);3增生物较正常骨质密度低,骨小梁结构疏松紊乱,边缘包绕骨白线(3例)。肿瘤周围骨质可受压移位或吸收,常见关节凹、关节结节骨质硬化。结论:CBCT能准确显示颌骨骨软骨瘤的特征性表现、形态、位置、范围及与周围组织的关系,为术前诊断及外科手术路径的选择提供参考。
Objective: To study the CBCT imaging features of jaw osteochondroma and provide reference for the diagnosis of this disease. Methods: The clinical and CBCT imaging data of 26 cases of osteochondroma of the jaw were analyzed. Results: The incidence of mandibular osteochondroma was more common in condyles (24 cases). The other two cases were located in coracoid and zygoma. Osteochondroma CBCT showed irregular proliferation of the jaw, morphological diversity, growth in different directions. The structures of proliferating organisms can be divided into three types: one is osteoid-like structure, the other is cortical bone and cancellous bone are connected with the jaw (17 cases) Cases); 3 accreted lower bone density than normal bone trabecular structure loose disorder edge wrapped around the white line (3 cases). Tumor around the bone can be pressure shift or absorption, common joint concave, joint nodular bone sclerosis. Conclusion: CBCT can accurately show the characteristic manifestations, morphology, location, scope and the relationship with the surrounding tissue of the jaw osteochondroma, and provide a reference for the preoperative diagnosis and surgical path selection.