Upfront Targeted Axillary Dissection for Luminal Breast Cancer With Limited Axillary Involvement

This trial is studying whether a newer, more targeted approach to armpit (axillary) lymph node removal called Targeted Axillary Dissection (TAD) can safely replace full lymph node dissection in women with early-stage hormone receptor-positive breast cancer with limited lymph node involvement. **You may be eligible if...** - You are 18–90 years old - You have early-stage breast cancer (T0–T2, ER+/PR+, HER2-negative) - Only 1 or 2 lymph nodes under the arm look suspicious, and at least one has been confirmed positive by biopsy - You are not receiving neoadjuvant (pre-surgery) treatment - You are willing to follow the study procedures and attend follow-ups **You may NOT be eligible if...** - You have a history of invasive breast cancer - You have another invasive cancer diagnosed in the past 5 years - You have conditions that make radiation therapy unsafe - You have a psychiatric or other condition that would affect your ability to consent or participate Talk to your doctor to see if this trial is right for you.