The Initial Appearance of Lung Adenocarcinoma on Computed Tomography.

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概要

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• <I><B>Objective</B></I>. To determine the initial appearance of lung adenocarcinoma on computed tomography and the appropriate follow-up duration. <I><B>Study Design</B></I>. Retrospective review of 17 cases in which computed tomography (CT) of the chest was performed about 2 years prior to the diagnosis of lung cancer. The diagnosis was confirmed by surgical resection in all cases. <I><B>Result</B></I>. The lung cancers were divided into four types based on their appearance on the initial CT: 1. Ground-glass opacity (GGO)-like images in which the lesion appeared as a faint opacity, 2. BLA (bubblelike appearance) image, in which the lesion resembled a focal collection of air, 3. A small solitary nodule, and 4. A scarlike image. Vascular involvement, air-bronchogram, and pleural indentation were all more prominent during a serial scan obtained just prior to surgery than on the initial scan. An increase in vascular involvement occurred prior to the other changes. High attenuation areas appeared in the GGO-like lesions prior to an increase in the size of the lesion. The growth pattern was classified as slow growing, rapidly growing, and initially slow growing with accelerated growth. The doubling time was similar in lesions with the same appearance. This information can be used to guide follow-up of images suspected of lung cancer. The appropriate follow-up duration is estimated from 6 to 12 months for GGO and BLAlike images, and from 2 to 3 months for small solitary nodules. <I><B>Conclusion</B></I>. The biological behavior of lung cancer is reflected in their initial appearance on CT.

• 特定非営利活動法人 日本肺癌学会の論文

特定非営利活動法人 日本肺癌学会 | 論文

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