This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Breast Cancer - Types and Staging, Subject name: Surgery
[{'content': 'As per AJCC breast cancer staging T4 is? \nSelect and explain. \nA. Distant metastasis, B. Satellite lesions, C. Spread to contralateral axillary lymph nodes, D. Sentinel lymph node involvement', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Ans. (b) Satellite lesionsRef: Schwartz 10th ed. / 532ToNo evidence of primary tomorTISCarcinoma in situT1Tumor <2 cmT1aTumor > 0.1 cm but < 0.5 cmT1bTumor > 0.5 but < 1 cmT1cTumor > 1 cm but <2 cmT2Tumor > 2 cm but <5 cmT3Tumor >5 cmT4Extension to chest wall, inflammation, satellite lesions, ulcerations', 'role': 'assistant'}]