HRCT在不同级别肺黏液表皮样癌中的鉴别诊断价值  

Differential diagnostic value of HRCT in different grades of pulmonary mucoepidermoid carcinoma

作　　者：李红 沈洁[1] LI Hong;SHEN Jie(Department of Radiology,Nanjing Brain Hospital(Nanjing Chest Hospital)Affiliated to Nanjing Medical University,Nanjing,Jiangsu 210009,China)

机构地区：[1]南京医科大学附属脑科医院胸科院区放射科,江苏南京210009

出　　处：《影像研究与医学应用》2024年第8期28-32,36,共6页Journal of Imaging Research and Medical Applications

摘　　要：目的:探讨高分辨率CT(HRCT)在不同级别肺黏液表皮样癌(PMEC)中的鉴别诊断价值。方法:回顾性分析2010年1月—2022年12月南京市胸科医院收治的30例PMEC患者的资料。患者术前均行HRCT平扫和增强检查,基于术后病理分为低级别组(n=16)、高级别组(n=14),分析比较两组病灶位置、大小、是否钙化、强化程度及伴随征象等影像特征。结果:PMEC患者年龄多为50~60岁,其中女性患者多见,占67%,肿块最大径及左右肺分布在低级别组和高级别组中差异无统计学意义(P>0.05)。30例PMEC患者8例(8/30)为周围型,22例为中央型(22/30),且左右两肺的分布无差别;肿块边界清晰,无分叶共19例,其中低级别组PMEC共12例;PEMC中密度均匀者13例,多见于低级别PMEC;平扫CT值50~60 HU,增强扫描呈轻度强化15例,且中-重度强化多见于高级别PMEC;伴瘤内钙化者共11例,其中低级别组6例,高级别5例。淋巴结转移、胸腔积液、胸膜牵拉凹陷在两组间差异无统计学意义(P>0.05)。结论:PMEC可见于老年患者,常表现为管腔内或中央型肿块,伴钙化或阻塞性改变;相对于高级别PMEC,低级别PMEC多表现为边缘光滑、密度均匀、轻度强化的结节。Objective To explore the differential diagnostic value of high resolution CT(HRCT)in different grades of pulmonary mucoepidermoid carcinoma(PMEC).Methods The data of 30 PMEC patients admitted to Nanjing Chest Hospital from January 2010 to December 2022 were retrospectively analyzed.All patients underwent both HRCT plain scans and enhanced examinations before surgery.Based on postoperative pathology,they were categorized into a low-grade group(n=16)and a high-grade group(n=14).The study focused on analyzing and comparing the location,size,calcification,enhancement degree of the lesions,accompanying signs,and other imaging features.Results The majority of PMEC patients were in the age range of 50 to 60 years old,with females constituting 67%of the cases.There were no statistically significant differences in tumor length and distribution across the left and right lungs between the low-grade and high-grade groups(P>0.05).Among the 30 PMEC patients,8(8/30)had a peripheral tumor type,while 22 had a central tumor type(22/30).The tumor distribution showed no significant disparity between the left and right lungs.In 19 cases,the tumor exhibited clear borders and no lobulation,with 12 of these cases belonging to the low-grade group.Uniform density in 13 cases was predominantly observed in low-grade PMEC.The plain scan CT value ranged from 50-60 HU,with 15 cases showing mild enhancement on contrast-enhanced scans.Moderate to severe enhancement was primarily observed in highgrade PMEC cases.Calcification within the tumor was identified in 11 cases,with 6 cases in the low-grade group and 5 cases in the high-grade group.There were no statistically significant differences in lymph node metastasis,pleural effusion,and pleural traction depression between the two groups(P>0.05).Conclusion PMEC is commonly diagnosed in elderly patients and typically manifests as intraluminal or central masses that may exhibit calcification or obstructive changes.When comparing low-grade PMEC to their higher-grade counterparts,it's worth noting that

关 键 词：计算机断层扫描 肺黏液表皮样癌 影像特征 

分 类 号：R445.3[医药卫生—影像医学与核医学]