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
Intraoperative sentinel lymph node detection in axilla is done by using - 
Select and explain. 
A. Mammography, B. Isosulfan blue dye, C. MRI *, D. CT
B: Isosulfan blue dye
Answer: B: Isosulfan blue dye 
Explanation: Ans. is 'b' i.e., Isosulfan blue dye o Lymphetic mapping is performed by using isosulfan blue dye, technetium-fabled sulfur colloid ablumin or a combination of both.