[en] We prospectively evaluated CT images of the lower lung on lung window setting in the abdominal CT. In 1.151 abdominal CT examinations CT image on lung window setting detected pulmonary lesions on 120 examinations (10.4%). Pulmonary lesions included nodules, inflammatory changes, bullae, emphysema, bronchiectasia and others. CT images on abdominal window setting and chest radiography showed those lesions only in 40.9% and 53.4% respectively. To display lung images on lung window setting in the abdominal CT scan provides more useful informations without additional cost or irradiation. Especially in the patients with malignancy, pulmonary metastasis can be found earlier. (author)