硬化性肺细胞瘤MSCT特征

目的:探讨硬化性肺细胞瘤(SP)的影像学表现,旨在提高SP影像诊断的准确率。方法:回顾性分析2010年1月-2018年12月共83例SP患者的临床、影像学及病理资料,并进行分析总结。结果:①临床资料:男女比例为1∶9,平均年龄(52±12)岁;47例体检发现,30例患者有呼吸系统症状。②位置:37例同叶间裂和(或)纵隔胸膜关系密切。③形态学特征:82例为单发结节;79例边缘光滑;22例“分叶征”;最大径的四分位数分别为15.4mm、21.0mm、29.7mm。④密度:43例密度均匀;18例存在小结节状钙化,CT值为342±158HU;瘤体边缘钙化:瘤体内部钙化5∶1。⑤强化特征:中高度强化43例,轻度强化8例。⑥瘤周特征:53例“血管贴边征”;3例“空气新月征”;13例“空气潴留征”;24例“晕征”;10例“鸟蛋鸟巢征”;13例出现远侧支气管扩张。⑦动态变化:2例(2/9)“融蜡征”。结论:SP好发于中年女性患者,影像学常表现为边缘光滑的单发富血供结节,“融蜡征”、“空气新月征”、“晕征”有助于提高SP影像诊断的准确率。

The characteristics of MSCT in sclerosing pneumocytoma

Objective:The imaging findings of sclerosing pneumocytoma(SP)were explored in order to improve the accuracy of imaging diagnosis of SP.Methods:The clinical,imaging and pathological data of 83 patients with SP from January 2010 to December 2018 were retrospectively analyzed and summarized.Results:①Clinical data:The ratio of male to female was 1:9;the average age was 52±12 years old;47 cases were found by physical examination,30 patients had respiratory symptoms.②Location:37 cases were closely relating to the interlobular fissure and mediastinal pleura.③Morphological features:82 cases were single nodules;79 cases were smooth;22 cases were lobulated;The quartile of the largest diameter was 15.4mm,21.0mm,29.7mm,respectively.④Density:43 cases were uniform in density;18 cases had punctate calcification,the CT value of which was(342±158)HU;Tumor calcification of the margin:tumor calcification of the interior=5:1.⑤Enhanced features:43 cases of moderate-intensity enhancement and 8 cases of mild enhancement.⑥Peritumoral characteristics:53 cases of vascular adhering sign;3 cases of air crescent sign 13 cases of localized emphysema;24 cases of halo sign;10 cases of egg and bird nest sign;13 cases showed distal bronchiectasis.⑦Dynamic changes:2 cases(2/9)of waxing sign.Conclusions:SP is common in middle-aged women,and MSCT often shows a single smooth-edged and rich-blood-supply nodule.Waxing sign,air crescent sign,halo sign and other tumor signs can help improve the accuracy of SP imaging diagnosis.