Thank you for your query.
This might be an infection in the breast that has formed an abscess
, that is erupting on the nipple.
Unfortunately the shape of a lump in the breast
will not exclude cancer of the breast. You need to see a doctor as soon as possible to reassess the situation. They need to exclude cancer by taking a fine needle aspiration or a biopsy
of tissue, if it is just an infection , it needs to be surgically drained and treated with antibiotics. I trust this information helps you.