Abstract
We experienced a case of clear cell tumor of the lung which is a rare benign tumor. The case involved a 69-year-old man who was referred to the urology department in our hospital because of hematuria. Bladder cancer was diagnosed following transurethral resection of a bladder tumor (TUR-Bt). A solid nodule was observed in the right lower lobe on a chest computed tomographic scan performed as part of systemic examination. Brush cytology performed under bronchoscopy gave no definitive diagnosis and chemotherapy was started with a presumptive diagnosis of cT2N0M1. TUR-Bt performed following completion of the chemotherapy showed no remnant bladder cancer. Because the tumor diameter of the pulmonary nodule had not changed on a follow-up chest CT scan, the patient was referred to our department for diagnosis and treatment. Following thoracoscopic partial lung resection, the patient was finally diagnosed with clear cell tumor of pulmonary origin based on histopathological diagnosis.
