PMC9472074_01
Posterior-anterior (A) and lateral chest X-ray (B) demonstrating a subtle left infrahilar nodular opacity with a region of atelectasis in the left lower lung, best seen on the frontal view.
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As part of the patient's evaluation the patient received labs, which were within normal limits, as well as a 2-view chest X-ray (Fig. 1) obtained at 3 a.m.
The radiology report for the initial chest X-ray, where the findings demonstrated in Fig. 1 are not described.
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The radiology report (Fig. 2) did not identify an abnormality within the patient's lungs.
Posterior-anterior (A) and lateral chest X-ray (B) demonstrating an enlarging left perihilar mass with post-obstructive atelectasis in the left lower lobe when compared to earlier chest X-ray taken 4 months prior.
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A subsequent 2-view chest X-ray (Fig. 3) revealed an enlarging left perihilar mass with post-obstructive atelectasis in the left lower lobe.
Two examples of the axial CT scan of the chest with differing window level and width to highlight soft tissue (A) and lungs (B) that reveal a left lower lobe mass with post-obstructive atelectasis.
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Posterior-Anterior (A) and lateral chest X-ray (B) demonstrating Chest-CAD output that identified suspicious ROIs in the lungs.
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Chest-CAD analysis identified suspicious ROIs in the lungs (Fig. 5), with one ROI encompassing early lung cancer in the left lung.
Posterior-Anterior (A) and lateral chest X-ray (B) demonstrating why Chest-CAD identified the lungs as having suspicious ROIs. The heatmaps are focused on the known left infrahilar malignancy and post-obstructive left lower lung atelectasis.
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A heatmap (Fig. 6), which is an intermediate processing output of Chest-CAD and not shown to the end user, clearly focused on the known left infrahilar malignancy and post-obstructive left lower lung atelectasis.