A case of pulmonary benign clear cell tumor

Abstract

Pulmonary benign clear cell tumors are very rare. A 57-year-old woman with a round and well marginated nodule in the right middle lobe of the lung underwent thoracoscopic partial lung resection. Histopathological specimens of the resected tumor revealed cells with an abundant, clear cytoplasm containing glycogen. Immunohistochemical staining was positive for PAS and HMB-45. The tumor was diagnosed as a primary pulmonary clear cell tumor.