侵及咽旁间隙的腮腺深叶肿瘤影像表现  

Imaging findings of deep-lobe parotid tumors involving the parapharyngeal space

作　　者：于小平[1] 

机构地区：[1]中南大学湘雅医学院附属肿瘤医院放射科湖南省肿瘤医院放射科,湖南长沙410013

出　　处：《实用放射学杂志》2015年第1期28-30,42,共4页Journal of Practical Radiology

摘　　要：目的：探讨侵及咽旁间隙（PPS）的腮腺深叶肿瘤的影像表现。方法回顾性分析23例累及 PPS 的腮腺深叶肿瘤的 CT和 MRI 表现，包括多形性腺瘤19例、基底细胞腺瘤2例、神经鞘瘤1例和恶性肌上皮瘤1例。结果17例肿块呈卵圆形，不规则形6例。23例肿块与腮腺之间均未见明显的脂肪间隙。9例可见脂肪帽征。8例见腮腺蒂征。4例可见茎突后移、4例见茎突被包绕。5例肿块位于二腹肌后腹的浅面。颈动脉鞘向内前方移位7例、向内后方移位11例。结论侵及 PPS 的腮腺深叶肿瘤具有一些影像学特征，有助于与 PPS 原发肿瘤鉴别。Objective To analyze the imaging appearances of the deep-lobe parotid tumors involving the parapharyngeal space （PPS）.Methods The CT and MRI data of 23 cases with deep-lobe parotid tumors involving PPS were analyzed retrospectively.The neoplasms included pleomorphic adenomas （n=1 9）,basal cell adenomas （n =2）,neurilemmomas（n = 1 ）and malignant myoepi-thelioma（n=1）.Results The lesions presented as oval（n=1 7）or irregular （n =6）masses.None of the 23 cases showed visible fat space between the tumors and deep-lobe of parotid glands.Fat Cap Sign was found in 9 cases.Parotid Pedicle Sign was demonstrated in 8 cases.The styloids were displaced posteriorly（n=4）or surrounded（n=4）by the tumors.Five masses were found to be situated at the superficial side to the posterior belly of the digastric muscle.Carotid sheaths were shifted anteromedially （n=7）or postero-medially（n= 1 1 ）by the tumors.Conclusion The deep-lobe parotid tumors involving PPS have some imaging features which are helpful in the differential diagnosis between the deep-lobe parotid tumors and PPS primary tumors.

关 键 词：咽旁间隙 腮腺 肿瘤 计算机体层成像 磁共振成像 

分 类 号：R739.91[医药卫生—肿瘤] R814.42[医药卫生—临床医学]