腮腺腺泡细胞癌的CT表现分析  

CT imaging findings of acinic cell carcinoma in parotid gland

作　　者：董文霞[1] 江明祥[2] 邵国良[2] 程国平[2] 

机构地区：[1]浙江省杭州市余杭区第一人民医院放射科,浙江杭州311100 [2]浙江省肿瘤医院放射科,浙江杭州310022

出　　处：《医学影像学杂志》2016年第4期596-600,共5页Journal of Medical Imaging

基　　金：浙江省卫生高层次人才培养基金(浙财社2013-189)

摘　　要：目的分析腮腺腺泡细胞癌（ACCP）的CT表现,以提高对该少见疾病的认识。方法回顾性分析经手术病理证实的20例ACCP的CT资料。20例中男7例,女13例,年龄15~72岁,中位年龄57岁。对肿瘤的部位、大小、形态、边缘、CT密度及强化形式进行分析。结果 20例患者均为单发肿瘤,17例位于腮腺浅叶,3例位于腮腺深叶。肿瘤最大径约0.8~3.5cm,病灶呈边缘清晰、光整的类圆形或椭圆形肿块18例;呈边缘不光整、边界不清的不规则分叶状肿块2例,其中1例病灶侵犯耳前皮肤,1例包绕下颌后静脉;密度均匀6例,不均匀14例（70%）。CT平扫病灶呈稍低密度15例,等密度5例;病灶内见沙粒样钙化者3例;增强后病灶呈明显强化15例（75%）、中度强化3例、轻度强化2例。16例病灶可见完整或不完整的包膜线状强化。结论 ACCP多表现为腮腺浅叶、单发、边缘光整、强化明显、易囊变的结节或肿块,类似良性肿瘤的影像表现,CT检查可以准确显示病灶累及的范围,为临床制定治疗策略提供客观依据。Objective To investigate the CT findings of acinic cell carcinoma in parotid gland in order to enhance the understanding of this rare disease. Methods CT findings of 20 cases（ 7 men and 13 women,median age 57） with pathologically proved ACCP were retrospectively reviewed. All CT images were evaluated in relation to the followings： location,size,morphology,margin,CT density and enhancement pattern. Results Each of the 20 patients had only 1 tumor. Seventeen lesions were located in the superficial lobe and 3 in the deep 1obe. The maximum diameter of lesions ranged from 0. 8 ~ 3. 5 cm. Eighteen cases demonstrated round or oval round masses with well defined margin,two cases demonstrated irregular masses with ill defined edge.Among them,the preauricular skin was invaded and the retromandibular vein was embedded in 1 case respectively. The densities were homogeneous in 6 cases and unhomogeneous in 14 cases. Compared to normal muscle,15 cases manifested as slight low-density and 5 cases manifested as isodensity on CT plain scan. Three lesions showed granular calcifications. On post contrast images,lesions demonstrated remarkable enhancement in 15 cases,moderate enhancement in 3 cases and slight enhancement in 2 cases.The uniform or partial thin and enhancing capsules could be seen in sixteen cases. Conclusion Most of ACCP manifeste as well defined single masses located in the superficial lobe with cystic degeneration and marked enhancement,like the feature of benign tumors. CT examinations can accurately demonstrate the extent of tumor involvement and provide more comprehensive imformation for the strategy of clinic therapy.

关 键 词：癌 腺泡细胞 体层摄影术 X线计算机 

分 类 号：R739.8[医药卫生—肿瘤] R814.42[医药卫生—临床医学]