After a mastectomy, the risk of developing breast cancer again is significantly reduced but not entirely eliminated. This is because it is nearly impossible to remove all breast tissue completely. Small remnants may remain in the chest wall, underarm area, or along the surgical scar. These remaining tissues can, under certain conditions, give rise to new tumors.
There is also a risk of metastatic cells spreading to other organs, such as bones, liver, or lungs. However, mastectomy remains a highly effective way to reduce breast cancer risk. The likelihood of recurrence is significantly lower compared to breast-conserving procedures, especially when follow-up care is strictly followed. If you notice symptoms like firmness, swelling, changes to the skin near the scar, or pain, it is essential to have them checked promptly.