Along with cancers, many benign tumors and procedures also can have an affect on the breast to lead to a lump. Fibroadenoma can be an example of a standard benign tumor with the breast that occurs in younger Girls. ) In pregnancy the areola darkens more and spreads in measurement. https://grok.com/share/c2hhcmQtMw%3D%3D_5ad6450c-533d-442c-a09c-9f7bce1babfb