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Late Recurrence of Estrogen Receptor-Positive Breast Cancer Presenting as a Golf-Ball-Sized Mass in the Left
Tomoyo Nishi1, Risa Hirata1, Masaki Tago1
1Department of General Medicine Saga University Hospital Saga Japan.
Clinical Case Reports
|October 13, 2025
Abstract:
A 71-year-old woman who, 27 years previously, had undergone left mastectomy and received postoperative hormone therapy for 1 year for breast cancer without recurrence, noticed a mass in her left supraclavicular fossa. The mass was approximately 5 cm in diameter. A biopsy confirmed the presence of metastatic breast cancer.

