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目的 探索颌骨恶性肿瘤影像学的征象特点,常规X线、CT和三维CT三种检查方式对颌骨病变显示的优缺点及互补点。方法 对不同类型的颌骨恶性肿瘤的常规X线、CT和三维CT显示情况进行对比分析,同时与手术病理结果相对照。结果 颌骨大部分原发恶性肿瘤、转移瘤和周围组织恶性肿瘤颌骨侵犯均不具有特征性的影像学征象,三种影像学检查均较难确定其组织学性质,但三种影像学检查相互结合可以准确显示病变的部位和范围。三维CT通过减影和旋转对腭板和眶下壁的骨质改变显示得最为理想,CT对病变的软组织成分及病变翼腭窝及咽壁侵犯的情况显示得最为有利。结论 三种影像学检查相互结合可以提高对颌骨恶性肿瘤显示的准确性。
Objective To explore the imaging features of malignant tumors of the jaws, the advantages, disadvantages, and complements of conventional X-ray, CT, and three-dimensional CT examinations on jaw lesions. Methods Conventional X-ray, CT and three-dimensional CT findings of different types of jaw malignancies were compared and compared with the results of surgical pathology. Results Most of the primary malignancies, metastatic tumors, and malignant tumors of the surrounding jaws did not have characteristic imaging signs. The three histopathological examinations were difficult to determine their histological characteristics, but the three imaging examinations. Combined with each other can accurately show the location and extent of the lesion. Three-dimensional computed tomography (CT) is most ideal for bone changes of the jaw plate and infraorbital wall through subtraction and rotation. CT shows the most favorable conditions for the soft tissue components of lesions and the invasion of lesions of pterygopalatine fossa and pharyngeal wall. Conclusion The combination of three imaging tests can improve the accuracy of the display of malignant tumors of the jaw.