CAJ | 학술논문

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 MEC PET/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.
목적탐토기관、지기관점액표피양암(MEC)적 PET/CT 영상표현급기진단개치.자료여방법수집5례경병리증실적기관、지기관 MEC 환자적림상자료,환자균행18F-FDG PET/CT 현상검사,병진행 CT 도상、PET 도상화 PET/CT 융합도상정대정대비분석,결합최대밀도투영、다평면중조등도상후처리기술진일보관찰,분석 MEC PET/CT 적영상표현.결과5례 MEC 환자중,1례위우기관,2례위우우주지기관,1례위우우하협지기관,1례위우좌하협지기관.1례반종격、우상폐문림파결전이,1례반우폐상협전이.PET 현상시기관、지기관내결절상、타원상혹장조상방사성농취영,폐내전이조、종격화폐문림파결전이정결절상방사성농취영,변계청석.CT 우상응부위견기관、지기관강내류원형연조직밀도결절혹종괴영,밀도교균균,기중2례병조내견반점상개화,2례반조새성폐불장,1례반조새성폐염.결론기관、지기관 MEC 적 PET/CT 영상표현위기관내타원형、주상등대사혹밀도개변,PET/CT 능구완정、청석지현시종류적공능대사신식여해부형태학영상특점,대림상진료유중요적제시의의.
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.