A 52-year-old woman presented with a lump in the upper outer quadrant of her right breast that had been growing over the past 2 months. On examination, a 3x3 cm hard, irregular lump was found fixed to the breast tissue but not to the skin or chest wall. A 1.5x1.5 cm mobile lymph node was palpated in the right axilla. The patient's history was notable for menopause at age 45, no family history of breast cancer, and no other health issues. The provisional diagnosis was carcinoma of the right breast, stage IIB.