Pulmonary blastomas are a group of rare malignant neoplasms and account for only 0.25-0.5% of primary malignant lung tumors. Histologically, they contain a mixture of immature or primitive epithelial and mesenchymal components, resembling embryonal lungs. They behave like non-small cell lung carcinomas (NSCLC), and the age distribution of patients with these tumors ranges from newborn to 80 years. The prognosis is rather poor and the 5-year survival is around 15%. Herein, we report a case of pulmonary blastoma presenting with productive cough, exertional dyspnea, and evident body weight loss. The chest radiograph taken 6 months earlier revealed no remarkable finding, but 1 taken prior to admission showed a huge mass in the right lower lung field. A right lower lobe (RLL) lobectomy was performed, and the pathology report showed a classic biphasic pulmonary blastoma without lymph node metastasis. The literature is reviewed, and we concluded that complete resection can be achieved despite the tumor's rapid growth rate.