The bulge in the armpit during the breast period is likely to be a woman’s parametrium, parametrium can be eliminated by massage or surgery, massage or other physical therapy is less effective in the treatment of parametrium, the most thorough way is surgical removal. However, the structure of the parametrial breast is similar to the mammary gland, so surgical removal is not easy to separate, and you need to go to a regular hospital for surgery, otherwise it is easy to leave complications or leave a large scar after surgery. The traditional surgical method for parametrial breast involves making small surgical incisions close to the breast, such as under the armpit, and then slowly separating them in sequence, taking care to protect the surrounding nerves and blood vessels. After surgery, normal subcutaneous sutures are performed and the medication is changed regularly.