[Advanced-Stage Breast Cancer Discovered by Cervical Lymphadenopathy in an Elderly Patient-Report of a Case].

Breast cancer spreading beyond the regional lymph nodes from the primary lesion is considered to be difficult to cure. Although systemic therapy is common for the treatment of metastatic breast cancer, standard therapy is difficult in some cases. We encountered a case of advanced-stage breast cancer detected by cervical lymphadenopathy in an elderly patient. An 82-year-old woman consulted an otolaryngologist for left cervical lymphadenopathy. On receiving the biopsy result, she was referred for a suspected metastatic lymph node from breast cancer. The tumor was 40mm in diameter and was palpable in the CD area of her left breast, accompanied by pain. Ultrasonography showed an irregular-shaped mass. Core needle biopsy was performed, and the pathological diagnosis was invasive lobular carcinoma. Her body check-up revealed multiple enlarged lymph nodes from the left axilla to the supraclavicular and cervical areas. We diagnosed her clinical stage with T2N3cM1, stage Ⅳ(LYM). We proceeded with surgery to alleviate the symptom. Breast reduction surgery was performed for the left breast. The pathological findings from the surgically resected specimens indicated invasive lobular carcinoma. After the surgery, 5-fluorouracil(5-FU)drug was orally administered. Cervical lymphadenopathy decreased, and visceral metastasis has not appeared.