Pneumocytoma is a rare benign tumor of the lung that usually manifests as a solitary pulmonary nodule. A 69-year lady, who had history of tuberculosis treatment 20 years ago, admitted to the hospital. A round mass was seen on chest radiography. Thorax computed tomography was reported as a round lesion in the left lung. Fiberoptic broncoscopy, computed tomography-guided fine-needle aspiration cytology and intraoperative frozen section analyses were undiagnostic. We performed wedge resection with minithoracotomy. Pathologic examination was reported as pneumocytoma. The patient did not receive any chemotherapy or radiotherapy after the operation. After 41 months' follow-up, no recurrent lesion was seen.