气管、支气管黏液表皮样癌的^(18)F-FDGPET/CT表现  

Manifestations of ^(18)F-FDG PET/CT in Mucoepidermoid Carcinoma of Trachea and Bronchus

作　　者：彭辽河[1] 丁久荣[1] 胡晓燕[1] 邱大胜[1] 李杰[1] 朱佳[1] 周静[1] 

机构地区：[1]湖北省肿瘤医院PET/CT中心,湖北武汉430079

出　　处：《中国医学影像学杂志》2013年第1期27-30,共4页Chinese Journal of Medical Imaging

摘　　要：目的探讨气管、支气管黏液表皮样癌(MEC)的PET/CT影像表现及其诊断价值。资料与方法收集5例经病理证实的气管、支气管MEC患者的临床资料,患者均行18F-FDG PET/CT显像检查,并进行CT图像、PET图像和PET/CT融合图像帧对帧对比分析,结合最大密度投影、多平面重组等图像后处理技术进一步观察,分析MECPET/CT的影像表现。结果 5例MEC患者中,1例位于气管,2例位于右主支气管,1例位于右下叶支气管,1例位于左下叶支气管。1例伴纵隔、右上肺门淋巴结转移,1例伴右肺上叶转移。PET显像示气管、支气管内结节状、椭圆状或长条状放射性浓聚影,肺内转移灶、纵隔和肺门淋巴结转移呈结节状放射性浓聚影,边界清晰。CT于相应部位见气管、支气管腔内类圆形软组织密度结节或肿块影,密度较均匀,其中2例病灶内见斑点状钙化,2例伴阻塞性肺不张,1例伴阻塞性肺炎。结论气管、支气管MEC的PET/CT影像表现为气管内椭圆形、柱状等代谢或密度改变,PET/CT能够完整、清晰地显示肿瘤的功能代谢信息与解剖形态学影像特点,对临床诊疗有重要的提示意义。Purpose To investigate the features and diagnostic value of PET/CT imaging in mucoepidermoid carcinoma （MEC） of trachea and bronchus. Materials and Methods Five patients with pathology proven MEC were retrospectively studied.^18F-FDG PET image and CT scan were performed in all cases. CT images, PET images and PET/CT fusion images of the same patient were analyzed frame by frame. Maximum intensity projection （MIP） and multiplanar reconstruction （MPR） were processed for further investigation. Results In five cases of MEC, one case in trachea, two cases in right main bronchi, one case in right lower lobar bronchus, and one case in left lower lobar bronchus were found, including one case with lymph node metastasis in mediastinum and right upper hilum and one case with right upper lobe metastasis. PET imaging showed nodular, elliptoid or strip-like abnormal radioactive uptake in the trachea and bronchus. Well defined nodular radioactive uptake was observed in pulmonary and lymph node metastases. CT imaging showed punctate calcifications in two cases, obstructive atelectasis in two cases and obstructing pneumonitis in one case. Conclusion MEC of trachea and bronchus has special features on PET/CT imaging. The utilization of functional and morphological images by PET/CT for MEC of trachea and bronchus has great significance for clinical diagnosis and therapy.

关 键 词：气管肿瘤 支气管肿瘤 黏液表皮样瘤 正电子发射断层显像术 氟脱氧葡萄糖F18 体层摄影术 X线计算机 

分 类 号：R734.1[医药卫生—肿瘤] R730.42[医药卫生—临床医学]