[Peripheral intrapulmonary lipoma: report of a case].

A 62-year-old woman who had undergone a left mastectomy for a breast cancer consulted us for an abnormal chest shadow. Chest computed tomography showed a well-defined nodule of 1 cm diameter periphery in lower lobe of the right lung. The differential diagnosis included benign lung tumors, such as intrapulmonary lymph nodes, granuloma etc. However, because of her past history we needed to consider metastasis. To make diagnosis, a wedge resection of the pulmonary nodule was performed. The tumor was diagnosed as a lipoma. No malignant cells were seen. Although peripheral intrapulmonary lipoma is very rare, it should be kept in mind in the differential diagnosis of an intrapulmonary nodule.