[Metastases in the Lung and Mediastinal Lymph Nodes from Breast Cancer 28 Years after the First Operation:Report of a Case].

A 76-year-old woman was pointed out a small nodule in the right lower lung lobe on a chest computed tomography( CT) for follow-up examinations of malignant thyroid lymphoma. Although she had undergone a radical mastectomy for right breast cancer 28 years previously, the nodule was suspected to be either metastatic lymphoma or primary lung cancer and thoracoscopic surgery was planned to perform. Since the intraoperative frozen section diagnosis was adenocarcinoma, right lower lobectomy and systemic lymph node dissection were performed. However, the final pathology revealed that the lesion was breast cancer metastasis and subcarinal lymph nodes were also positive for metastases.