18F-FDG PET-CT对周围型肺癌的诊断价值研究

The diagnostic value of PET-CT on peripheral lung cancer

目的 探讨PET-CT对周围型肺癌的诊断价值.方法 回顾性分析70例经病理证实的周围型肺癌患者的PET-CT影像资料,分析病灶的标准化摄取值（SUV）及其形态学表现.结果 70例周围型肺癌患者中,鳞癌患者32例、腺癌患者25例、小细胞肺癌患者8例、腺鳞癌患者3例、大细胞肺癌2例.平均SUV=4.94±1.53,其中,66例患者的PET影像结果可见18F-FDG高浓聚,SUV≥2.5;另外4例的SUV＜2.5.SUV与肿块大小呈显著相关性.结论 周围型肺癌大多具有较特殊的PET-CT影像学表现.PET-CT对周围型肺癌的诊断及鉴别诊断有较好的效能.SUV结合形态学分析有助于病灶的鉴别诊断.

Objective To evaluate the value of PET-CT in the diagnosis of peripheral lung cancer.Methods The morphologic characteristics and standardized uptake value （ SUV ） of 70 patients with lung cancer proved by pathology were analyzed retrospectively.Results Of the 70 cases,32 cases were squamous carcinoma,25 cases were adenocarcinoma,8 cases were small cell lung cancer,3 cases were adenosquamous carcinoma and 2 cases were megacell lung cancer.The average SUV of the lung cancer was 4.94±1.53.In the group of lung cancer,hypermetabolic lesions were found in 66 cases and the SUV was more than 2.5 while the SUV was less than 2.5 in 4 cases.Positive correlation was showed in the SUV and the size of tumors.Conclusions The peripheral lung cancer has its special imaging appearances of PET-CT.PET-CT is an excellent modality in the diagnosis and differential diagnosis of peripheral lung cancer.The SUV combining with morphological findings sometimes may be helpful for the differential diagnosis.