The clinical value of lung imaging fluorescence endoscopy for detecting synchronous lung cancer.

Some patients with non-small cell lung cancer (NSCLC) will also have a synchronous malignant lesion. The lung imaging fluorescence endoscopy (LIFE) has proven better than conventional white light bronchoscopy (WLB) for visualizing premalignant lesions or early stages of lung cancer. In this study, the additional value of LIFE in diagnosing synchronous lung cancers as well as the impact of these findings on definite therapy was analyzed. Seventy-two patients with recently diagnosed NSCLC or pulmonary lesions highly suspect of lung cancer were studied. Patients underwent WLB, followed by LIFE. Apart from the primary lesions, additional abnormal and suspicious lesions seen at WLB and LIFE were scored separately and biopsied. Sixty-nine patients had NSCLC and three patients had small cell lung carcinoma. Apart from the primary lesion, one up to six additional endobronchial lesions were visualized in 48 patients by WLB and/or LIFE. High-grade dysplastic lesions were detected in ten patients, three of whom were eligible for surgery of the primary tumor after completion of the investigations. Three other patients (4.3%) had synchronous cancers (NSCLC). In one patient, the lesion was visualized by LIFE and by WLB. The other two malignant lesions were detected only by LIFE. In these three latter patients, diagnostic work-up and definite treatment was changed, as a result of detection of synchronous lesions. In conclusion, LIFE has additional value in detecting synchronous malignant lesions in patients with primary lung cancer. The detection of these lesions changed diagnostic work-up and definite treatment plan. Therefore, LIFE should be used in the work-up of patients with primary lung cancer.

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