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目的探讨颌下区原发性肿瘤的CT特征。方法回顾性分析经手术病理证实的38例颌下区原发性肿瘤的CT表现。结果颌下腺混合瘤18例,其中7例为稍低密度,3例为稍高密度,1例为等密度,7例密度不均匀。颌下腺恶性肿瘤10例,4例密度均匀,6例密度不均匀;肿瘤与颌下腺分界不清或颌下腺显示不清。蔓状血管瘤3例,表现为密度不均匀,可见钙化,2例与颌下腺分界清楚。淋巴瘤7例,3例为双侧,4例为单侧,1例与颌下腺分界清楚,4例与颌下腺分界不清。良恶性肿瘤在患者年龄、病灶边界是否清晰、是否均匀强化、有无肿大淋巴结及有无坏死囊变差异具有统计学意义,而性别及病灶内有无钙化差异无统计学意义。结论 CT对颌下区原发性肿瘤的定位及定性诊断具有重要意义。相关CT征象对颌下区肿瘤的良恶性鉴别有重要意义,但对于来源于颌下腺的恶性肿瘤难以确定其组织学类型。
Objective To investigate the CT features of submandibular primary tumors. Methods The CT findings of 38 cases of submandibular primary tumors confirmed by surgery and pathology were retrospectively analyzed. Results 18 cases of mixed submandibular gland tumor, of which 7 cases were slightly lower density, 3 cases of slightly higher density, 1 case of equal density, 7 cases of uneven density. Submandibular gland malignant tumors in 10 cases, 4 cases of uniform density, 6 cases of uneven density; tumor and submandibular gland or unclear boundary between the unclear submarine gland. 3 cases of hemangiomas, showing uneven density, visible calcification, 2 cases and submandibular gland clear boundaries. Lymphoma in 7 cases, 3 cases of bilateral, 4 cases of unilateral, submandibular gland in 1 case clear boundaries, 4 cases and the submandibular gland unclear boundaries. Benign and malignant tumors in the patient’s age, lesion border is clear, whether the uniform enhancement, with or without lymph node enlargement and necrosis of cystic differences was statistically significant, but no difference in sex and lesions within the calcification was not statistically significant. Conclusion CT is of great importance for the localization and qualitative diagnosis of primary tumors in the submandibular region. Related CT signs of submandibular tumor benign and malignant differentiation of great significance, but for malignant tumors derived from the submandibular gland its histological type.