Case presentation A 55-year-old woman reported a palpable lump in the upper outer quadrant of her left breast, first detected incidentally during self-examination 11 years prior. She denied any associated symptoms such as pain, nipple discharge, or systemic complaints.
Her menstrual and obstetric history was unremarkable, and she had no identifiable risk factors for breast cancer. Physical examination Firm, mobile nodule approximately 1 cm in the left upper outer quadrant No overlying skin changes Palpable axillary lymphadenopathy Radiological findings Mammography and breast ultrasound confirmed a suspicious mass No distance metastases identified Staged as T1N1M0 (stage II) Initial management Total mastectomy with axillary lymph node dissection 19 lymph nodes excised, 8 positive for malignancy Histopathology Residual tumor measuring 1 cm, located 3 cm from the deep resection margin and…
