Diagnosis of right upper lobe lesion using the SUKEDACHI balloon with thin-bronchoscope to facilitate close-to-lesion transbronchial biopsy: Novel bronchoscopic technique

We report the first clinical use of a single-use bronchial dilatation catheter (SUKEDACHI) with a thin bronchoscope to diagnose a peripheral upper lobe lung lesion. In a man in his 70s, a part-solid nodule in the right upper lobe was difficult to reach using standard techniques. Balloon-assisted bronchial dilatation enabled advancement of the bronchoscope close to the lesion, allowing biopsy with standard forceps. Histopathology confirmed lung adenocarcinoma. This case highlights the potential of new technique to facilitate close-to-the-lesion access and improve diagnostic yield for peripheral pulmonary lesions.