King A D, Ahuja A T, King W, Metreweli C
Department of Diagnostic Radiology and Organ Imaging, Prince of Wales Hospital, Chinese University of Hong Kong, Shatin, New Territories, Hong Kong.
AJR Am J Roentgenol. 1997 Dec;169(6):1695-8. doi: 10.2214/ajr.169.6.9393192.
Peripheral nerve tumors (PNTs) of the neck are uncommon and are frequently mistaken for lymph nodes. The purpose of this study is to describe the sonographic appearance of PNTs in the neck and determine features useful in differentiating PNTs from lymph nodes.
PNTs of the neck have features that should alert the sonographer to the correct diagnosis. Features of value in differentiating PNTs from lymph nodes include a solitary, oval, hypoechoic mass with posterior enhancement and absence of an echogenic hilum. These features should lead to a careful search for the associated nerve to confirm the diagnosis. In addition, schwannomas have a vascular pattern indicating marked hypervascularity that can be obliterated with light pressure from the probe.
颈部周围神经肿瘤（PNTs）并不常见，常被误诊为淋巴结。本研究的目的是描述颈部PNTs的超声表现，并确定有助于将PNTs与淋巴结区分开来的特征。
颈部PNTs具有一些特征，应提醒超声检查者做出正确诊断。有助于将PNTs与淋巴结区分开来的特征包括孤立的、椭圆形的、低回声肿块，伴有后方增强，且无高回声的 hilum。这些特征应促使仔细寻找相关神经以确诊。此外，神经鞘瘤具有一种血管模式，显示明显的高血管性，在探头的轻微压迫下可消失。
