Detection of Lung Cancer on Chest Radiographs: Analysis on the Basis of Size and Extent of Ground-Glass Opacity at Thin-Section CT

Abstract

The detection of small peripheral carcinomas on chest radiographs is influenced by tumor size and extent of GGO as seen at thin-section CT.

Clinical significance of a solitary ground-glass opacity (GGO) lesion of the lung detected by chest CT

“…Recent advances in CT screening have led to an increase in the detection of focal GGO in the lung that is undetectable by simple chest X-ray [1,2,12], and created considerable interest in the relation between GGO and lung cancer. Kakiruma et al analyzed the progressions of eight pGGO cases diagnosed as lung cancer, and classified these during follow-up into three types: those that increased in size (increasing type, n = 5), decreased in size with the appearance of a solid component (decreasing type, n = 2), and those that were stable in size but increased in density (density type, n = 1) [13].…”

Lung cancer patients showing pure ground-glass opacity on computed tomography are good candidates for wedge resection

“…Most such small cancers are not detectable in chest radiopraphs; by CT, they show ground-glass opacity (GGO) [7]. Most of them are diagnosed pathologically as localized bronchioloalveolar carcinoma or as atypical adenomatous hyperplasia (AAH) [8,9], a precancerous lesion.…”

Detection of lung cancer using single-exposure dual-energy subtraction chest radiography

“…As previously indicated, it is diffi cult to diagnose the tumor with a high TDR, which means the X-ray attenuation of the tumor is low, on standard chest radiography. 22 In the nonsolid group, observer performance was low and was not improved by adding ES images. However, in the partly solid group, observer performance was signifi cantly improved by adding the ES images.…”