13例涎腺导管癌的影像学表现分析  

Imaging findings of 13 cases of salivary duct carcinoma

作　　者：陈晓丽 桂振朝 高杨 邢梦瑶 修建军[1] CHEN Xiaoli;GUI Zhenchao;GAo Yang;XING Mengyao;XIU Jianjun(Department of Radiology,Shandong Provincial Hospital,Cheeloo College of Medicine,Shandong University,Jinan 250021,Shangdong,China;Department of CT and MRI,People's Hospital of Shen County,Shen County 252400,Shandong,China)

机构地区：[1]山东大学附属省立医院影像科,山东济南250021 [2]莘县人民医院CT、MRI室,山东莘县252400

出　　处：《山东大学学报（医学版）》2021年第1期78-82,共5页Journal of Shandong University:Health Sciences

基　　金：山东省自然科学基金(ZR2017HM018)。

摘　　要：目的探讨涎腺导管癌(SDC)的影像学表现,以提高对该病的认识。方法回顾性分析经手术病理证实的13例SDC患者的CT及MR资料,观察病变的影像学特征。结果 13例患者中男性12例,女性1例,中位年龄64岁;12例行CT平扫及增强扫描,1例行MR平扫;病变均表现为单发肿块,其中位于腮腺9例,颌下腺2例,舌下腺1例,小涎腺1例;肿瘤大小不一,长径平均约3.3 cm;13例病灶边界均不清晰,呈浸润性生长,对周围组织不同程度侵犯,其中5例就诊时已有远处转移;平扫病变密度/信号不均匀11例,较均匀2例;CT增强扫描明显强化8例,中度强化3例,轻度强化1例;10例CT病灶中心见凝固性坏死区,坏死不彻底时可见轻度强化,1例MR病灶中心内见凝固性坏死,周围包绕低信号纤维环;伴颈部淋巴结转移者9例。结论 SDC的影像学表现具有一定特征性,肿瘤内出现凝固性坏死区有利于该病的诊断与鉴别。Objective To explore the imaging manifestations of salivary duct carcinoma(SDC). Methods The CT and MRI data of 13 confirmed cases of SDC were retrospectively analyzed. Results There were 12 male and 1 female, with a median age of 64 years. CT plain scan and enhanced scan were performed in 12 patients, and MR plain scan was performed in 1 patient. All lesions were single mass, located in the parotid glands(9 cases), submandibular glands(2 cases), sublingual glands(1 case), and minor salivary gland(1 case). Tumors varied in size, with an average long diameter of 3.3 cm. Thirteen tumors had unclear boundary, invading the surrounding tissues to varying degrees, among which 5 had distant metastasis at the time of admission. Inhomogeneous density/signal of lesions in plain scan was found in 11 cases and homogeneous in 2 cases. CT scan showed significant enhancement in 8 cases, moderate enhancement in 3 cases and mild enhancement in 1 case. Coagulative necrosis was observed in 10 CT images, and slight enhancement was seen when the necrosis was incomplete. Coagulative necrosis was observed in 1 MR image, which was surrounded by a low signal fiber ring. Cervical lymph node metastasis was observed in 9 cases. Conclusion The imaging manifestations of SDC has certain characteristics, and the presence of coagulative necrosis can help the diagnosis and differentiation of this disease.

关 键 词：涎腺肿瘤 涎腺导管癌 X线体层摄影术 磁共振成像 

分 类 号：R455.5[医药卫生—运动医学]