周围型肺癌MDCT影像特征分析

目的：探讨周围型肺癌MDCT表现。方法：对34例经病理证实的小肺癌（首次检查≤3．0cm）行脚追踪扫描并回顾性分析CT表现。男19例，女15例，年龄38～82岁。结果：腺癌25例，肺泡癌5例，鳞癌4例；混合磨玻璃密度11例，实性23例。结节分叶征25例，毛刺征27例，胸膜凹陷征20例，血管集束征20例，空泡征7例，支气管气相征4例。7例出现淋巴结转移，8例出现骨或脑转移。13例复查1次以上，2例出现病灶密度或大小的改变，其中1例实性病灶7年内由0．7cm增大至2．8cm。结论：脚在周围型小肺癌的诊断中有较大应用价值。

MDCT findings of peripheral lung cancer

Objective：To study the CT findings of small lung cancer.Methods：34 eases of small lung cancers （ ≤3.0cm on first CT scan） proved by pathology underwent MDCT and the CT findings were retrospectively analysed. There were 19 males and 15 females, ranged from 38 to 82 in age. Results： The histological type included： adenocarcinoma in 25, brochioloalveolar carcinoma in 5 and squmocellular carcinoma in 4. The density of lesions appeared as mixed ground glass opacity （GGO） in 11, solid density in 23. There were lobulafion in 25 cases, speculation in 27 eases, pleural tag in 20, vessel convergence in 20, vacuole sign in 7, air broehogram in 4. There were inetastasis of the lymph nodes at the pulmonary hilus and the mediastina in 7, and the metastasis of the bone or the brain in 8. 13 cases underwent repeated CT scan one more times within 2 week to 7 years, the lesions in 2 eases were changed in density or size, the lesion of one ease grew from 0.7 em to 2.8 em in maximum diameter in 7 years. Conclusion： Adenoeareinoma is the most common type of small lung cancer. The part of small lung cancer might grow very slowly. MDCT can improve the CT signs of small lung cancer.