3cm以下周围型肺癌的CT表现

CT appearances of peripheral lung cancer with its diameter≤ 3 cm

目的分析3cm以下周围型肺癌的CT表现,提高周围型小肺癌的诊断准确率。方法对40例直径小于3cm的周围型肺癌进行了回顾性分析。结果40例小肺癌中,具有分叶征11例,毛刺征13例,空泡征7例,空气支气管征2例,小空洞3例,胸膜凹陷征5例,血管集束征5例,26例进行了增强扫描,增强幅度在40HU～100HU之间。结论在合理制定扫描计划的基础上,全面分析病灶的边缘特征、内部结构以及周围组织的变化可以提高对3cm以下周围型肺癌的诊断准确率。

Objective To analyse the appearance of peripheral lung cancer ( ≤3cm in diameter) and to improve its diagnostic rate by CT .Methods 40 cases of peripheral lung cancer ( ≤3 cm in diameter ) were retrospectively reviewed .Of 40 cases,CT fidings included the lobular sign in shape in 11;burr sign in 13 ;sign of small bubbles in 7;sign of air bronchus in 2;small cavity formation in 3;sign of hollowed pleura in 5;sign of blood vessel bundle in 3.of 26 cases with additional enhanced CT scanning, the increasing range in 40 HU～100 HU.Conclusion On the basis of making scanning plans properly,to analyse the appearance of peripheral lung cancer ( ≤3 cm in diameter) comprehens ively,such as edge signs,internal texture and tissue changes around it,can improve the diagnostic rate of it .