涎腺少见局灶性病变的高频超声表现

目的探讨涎腺少见局灶性病变的超声表现。方法回顾性分析并总结经病理证实的20例涎腺少见局灶性病变的超声表现,包括病变部位、大小、形状、回声、边界、内部血流等情况。结果良性病变14例(包括良性淋巴上皮病变5例,基底细胞腺瘤4例,毛细血管瘤3例,肌上皮瘤1例,嗜酸细胞腺瘤1例),大多为圆形或椭圆形(11/14,78.6%)、低回声(10/14,74.1%)、边界清楚(11/14,78.6%)。14例CDFI分别为:1例无血流信号、4例血流稀少、9例血流丰富。恶性病变6例(包括黏液表皮样癌2例,腺样囊性癌1例,囊腺癌1例,腺癌1例,非霍奇金淋巴瘤1例),4例圆形或椭圆形(4/6,66.7%),2例形态不规则(2/6,33.3%)。大多为混合回声(5/6,83.8%)、边界不清(4/6,66.7%),其中3例(3/6,50.0%)病灶内见点状钙化。其中5例有CDFI资料,1例无血流信号、1例血流稀少、3例血流丰富。结论了解涎腺少见病变的超声表现有助于涎腺病变的诊断和鉴别诊断,但部分良恶性病变超声表现有重叠,可能误诊。

Findings of rare focal lesions in the salivary glands by high frequency ultrasound

Objective To investigate the findings for rare focal lesions of the salivary glands by ul- trasound. Methods The ultrasound images of 20 rare focal lesions in the parotid and submandibular glands included in 20 cases with pathological confirmation were retrospectively reviewed. Results Most of 14 benign lesions （ including 4 basal cell adenomas, 3 hemangiomas, 5 benign lymphoepithelial lesions, myoepthelioma and an oncocytoma） appeared round or oval （78.6% , 11/14 ） , hypoeehogenic （ 74.1% , 10/14 ） and well-circumscribed （78.6% ,11/14）. The CDFI of 14 lesions showed no- （n = 1 ） , rare- （n = 4）, or rich-blood flow （ n = 9）. The 6 malignant tumors （ including 2 mucoepidermoid carcinomas, 1 adenoid cystic carcinoma, 1 cystadenocarcinoma, 1 adenocarcinoma, and 1 non-Hodgkin＇ s lymphoma） were irregular （n = 2, 33.3% ） or oval （n =4, 66.7% ）. Most of them were heterogeneously echoic （83.8% ,5/6）, ill-circumscribed（66.7% ,4/6）, and 3 （50.0%） showed intralesional fine calcification. The CDFI of 5 lesions showed no- （ n = 1 ）, rare- （ n = 1 ）, or rich-blood flow （n = 3 ）. Conclusions The rare focal lesions in the salivary glands is helpful for diagnosis of salivary gland lesions by ultrasound, but ultrasonic appearances may be overlapped and misdiagnosed.