Three Cases of Resection of Late Recurrence of Breast Cancer that Required Differential Diagnosis of Primary Lung Cancer

OYAMA Rintaro, HANAGIRI Takeshi, NISHIZAWA Natsumasa, ASHIKARI Shuhei, NISHINAKA Hidekazu, YAMAZAKI Toru

doi:10.7888/juoeh.43.271

<p>We report 3 cases of surgical resection for lung metastasis more than 15 years after initial surgery for breast cancer. Case 1: A 77-year-old woman was referred to our hospital because of a lung nodule in the left lower lobe detected in a computed tomography (CT) scan. She had undergone breast preservation therapy for breast cancer 15 years before the first visit. Left lower lobectomy was performed via video-assisted thoracoscopic surgery (VATS). The pathological diagnosis was lung metastasis of breast cancer, based on positive immunohistochemical staining of estrogen receptor (ER) and gross cystic disease fluid protein 15 (GCDFP-15). Case 2: An 88-year-old woman had undergone a mastectomy for breast cancer 23 years previously. A CT scan revealed a nodule in the upper lobe of the left lung. A wedge resection of the left upper lobe was performed. Because immunostainings for progesterone receptor (PgR) and GCDFP-15 were positive, the pathological diagnosis was metastasis of breast cancer. Case 3: A 78-year-old woman had undergone right mastectomy for the breast cancer 29 years previously. The patient was referred to our hospital because of a nodule in the right lung in a CT scan. Thoracoscopic right upper lobectomy was performed. The pathological diagnosis was lung metastasis of the breast cancer, with immunohistochemical positivity to ER, PgR, and focally to GCDFP-15. A differential diagnosis between primary lung cancer and metastasis of breast cancer on the basis of the findings of a CT scan is often difficult. It is important to obtain the previous clinical information about the breast cancer before VATS, even in patients with a long disease-free interval of more than 15 years.</p>

Three Cases of Resection of Late Recurrence of Breast Cancer that Required Differential Diagnosis of Primary Lung Cancer

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