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Axial CT image at lung window setting (A) shows a mass (arrow) in the apical segment of right upper lobe in a 73 years-old man, proved to be an invasive adenocarcinoma. Lung volume segmentation performed by using semi-automated software (Thoracic VCAR, GE Healthcare, Milwaukee, WI) allows to separate each lobe along the fissures (B, C) and to obtain the volume of emphysema (blue dots) within each lobe.
