腮腺恶性淋巴瘤和恶性淋巴上皮瘤的超声诊断研究

目的：本文报道突起 见的腮腺恶性淋巴瘤和恶性淋巴上皮瘤，并从灰阶声像图和彩色多普勒血流显像（CDFI）方面进行探讨。方法；观察肿瘤的硬度、形态、境界、内部回声、后方回声和侧后声影等指标。观察同侧颈深上淋巴结是否有转移可能，并用CDFI观察肿瘤内部和周缘的血流分布情况和血流性质。结果：恶性淋巴瘤和恶性淋巴上皮瘤有异病同图的特点，超声诊断恶性淋巴瘤符合病理诊断1例（8.3%)，超声诊断恶性肿瘤簦现理诊断5例（41.7%)。结论：超声诊断主要以灰阶声像图的特点作综合分析。CDFI能在声像图上提供肿瘤的血管分布和血流的信息。

Ultrasonographic Study ofParotid Malignant Lymphoma and Malignant Lymphoepithelioma

Objective:To report rare parotid malignant lymphomas and malignant lymphoepitheliomas in 12 cases and discuss their features of B mode and CDFI.Methods:The hardness,morphology,boundary,internal echo,posterior echo and latero posterior shadowing of tumors were observed.At the same time,we examined the metastasis of ipsilateral lymphoglandulae cervicales profundae of superiores and surveyed the blood distributions and hemodynamics of the internal and boundary vasculature of the tumors.Results:Though being two different tissues,malignant lymphoma and malignant lymphoepithelioma had the same sonographic features.One case(8 3%)was ultrasonographic diagnosed as malignant lymphoma and five (41 7%)as malignant tumors in accordance with pathology.Conclusions:Ultrasound diagnosis of the two kinds of malignant tumors is mainly based on the synthetical analysis of gray scale characteristics and the blood vasculature distributions and their hemodynamics in the tumoral internal area and boundaries.