[Pulmonary granuloma possibly caused by a fish bone material]

We herein describe an extremely rare case of pulmonary granuloma possibly caused by a fish bone material. A 60-year-old woman with hemosputum was found to have a right pulmonary nodule. Chest computed tomography showed a nodule with pleural retraction, vascular convergence and ground glass opacity, measuring 23 mm in diameter, located at the S2 Of right upper lobe. Based on these findings, this nodule was considered to be a primary lung cancer, and pulmonary resection was performed. Macroscopically, a foreign material was found in the lesion and the pathologic diagnosis of the nodule was foreign body granuloma possibly due to a fish bone material.