摘要
目的评价MSCT对鉴别颈部不同区域囊性病变的价值。方法搜集2005年3月至2009年10月经手术病理证实的颈部囊性病变40例，排除标准：甲状腺源性囊性病变、胸腺及支气管源性囊性病变、颈部实性病变（转移性或感染性淋巴结、神经源性肿瘤）的囊变、腮腺内的囊实性肿物、腮裂瘘。40例患者均行CT平扫，其中10例行CT增强检查。CT检查参数如下：120kV，260mA，层厚5mm，螺距1．375；增强检查延迟时间：动脉期25S，静脉期60S。结果将颈部囊性病变分为4个区域：腮腺区、中线区、颈侧区及颈后区。腮腺区囊肿包括2例第一腮裂囊肿和2例表皮样囊肿，第一腮裂囊肿位于腮腺内；表皮样囊肿1例位于腮腺内，1例位于腮腺外。中线区病变21例，17例为甲状舌管囊肿，占81．0％，13例病变位于舌骨水平，12例病变跨舌骨内外生长，累及会厌前间隙或口底；3例为会厌囊肿，1例为表皮样囊肿。12例颈侧区病变为4种类型的第二腮裂囊肿，10例位于左侧，11型最常见，5例；I、Ⅲ型各3例；1V型1例。颈后区病变包括2例淋巴管瘤和1例第三腮裂囊肿，前者位置较低，通常位于锁骨上区，后者位置较高，位于中段颈部。结论根据不同的解剖部位及典型的影像学表现，MSCT可对颈部囊性病变进行鉴别诊断。
Objective To evaluate the value of MSCT in differentiate cystic lesions in different cervical region. Methods Forty cases with cyst lesions in the neck which was confirmed by pathology were collected in our study. The following diseases were excluded： cystic lesions from thyroid gland and thymus or bronchus, cystic changes of solid lesions （ necrotic lymph node） and cystic or solid lesions in the parotid gland. All patients underwent MSCT scan on GE Lightspeed 16. The parameters were following： 120 kV, 260 mA,thickness 5 ram,pitch 1. 375. The delay time for contrast enhanced CT was 25 seconds for arterial phase and 60 seconds for vein phase. Results Lesions were analyzed in 4 different cervical regions including parotid gland, midline, lateral cervix and posterior cervix. Among the lesions in parotid area, 2 were first brachial cyst and the other 2 were epidermoid cyst. First brachial cyst occurred intraparotid gland and epidermoid cyst occurred intraparotid or extraparotid gland. Among the lesions in midline area, 17 cases were thyroglossal cysts,81.0% were in the level hyoid bone, 12 cases of thyroglossal cysts protruded at the preepiglottic space or oral base. Another kind of lesions in midline included 3 cases of epiglottie cysts and 1 epidermoid cyst in the lower level of the neck which involved infrasternal level The 12 cases of second brachial cysts occurred in the lateral neck. Ten cases were in the left side. Type ]] was the most common type and account for 5 cases among all of second brachial cysts. Type [ and type II were running up, accounting 3 cases respectively. Type 1V account for 1 case. Two cases with lymphangioma and 1 case with third brachial cyst located at the posterior neck. Conclusion According to the location and typical imaging appearance, MSCT can do the differentiation of different cystic lesions in the different area of neck.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2011年第2期174-178,共5页
Chinese Journal of Radiology
