**5.3 Stage 2**

Stage 2 is divided into two categories: 2A and 2B. The tumour is detected in axillary lymph nodes or sentinel lymph nodes in Stage 2A, but there is no tumour in the breast. The tumour may be 2 cm in diameter or 5 cm in diameter. Stage 2B, on the other hand, defines a tumour that is bigger than 5 cm in diameter but does not reach the axillary lymph nodes [18].
