目的：探讨小涎腺肿瘤的CT与MRI的影像学特征，提高诊断准确性。方法：回顾性分析31例经手术病理证实的小涎腺肿瘤的临床及CT、MRI资料。结果：31例小涎腺肿瘤中良性14例，多形性腺瘤多见，多发于腭部，最大径平均值2.3 cm，CT多呈软组织密度，T1WI呈等或稍低信号，T2WI多呈稍高信号，13例边界清，4例伴有周围骨质压迫吸收，增强呈轻中度强化；恶性肿瘤17例，腺样囊性癌较多，腭部发病率最高，CT多呈混杂中低密度影，T2WI多呈混杂等或稍低信号，少数呈稍高信号，14例边界不清，周围见骨质破坏，增强呈轻至显著不均匀强化。结论：小涎腺肿瘤有一定的影像学特征，CT与MRI对小涎腺肿瘤的诊断及鉴别诊断具有重要意义。
Abstract
Objective: To study features of minor salivary gland tumors on the CT and MR image. Methods: The CT, MR image and clinical information of 31 patients with surgery and pathology confirmed tumors of minor salivary glands were retrospective analyzed. Result: Fourteen cases of minor salivary gland tumors among 31 cases were benign tumors, and most of them were adenoma. The average diameter of tumors was 2.3 cm, most tumors located in the palatine. Tumors were shown soft tissue density on CT, low or equal signal on T1WI and slightly higher signal on T2WI. Thirteen cases were well-defined and 4 cases had bone oppression. Tumors were moderate enhancement in the post-enhanced scan. Malignant tumors were seen in 17 cases, most of them were adenoid cystic carcinoma. They often appeared in the palatine. Most of them were shown mixed low density on CT, mixed slightly low signal on T2WI, few of them were shown slightly high signal. Fourteen cases were with unclear boundary and bone destruction. Tumors were mild to obvious heterogeneous enhancement in the post-enhance scan. Conclusion: CT and MRI are of considerable value in diagnosis and differential diagnosis of minor salivary gland tumor.
关键词
涎腺肿瘤 /
体层摄影术 /
螺旋计算机 /
磁共振成像
Key words
Salivary gland neoplasms /
Tomography, spiral computed /
Magnetic resonance imaging
中图分类号：
Ｒ739.8
Ｒ814.42
Ｒ445.2
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