Klin Onkol 2026; 39(2): 117-121. DOI: 10.48095/ccko2026117.
Background: Breast cancer is a one of the most common causes of cancer death in the world. Late recurrence is a notable characteristic of this disease. Case: We experienced an extremely rare case of breast cancer that developed a second recurrence 36 years after the initial surgery and 18 years after the first recurrence, manifesting as bilateral pleural effusion and multiple bone metastases. Conclusion: This report highlights that it is important for both patients and doctors to be aware that such patients exist.