Summary of Fibroadenoma
Fibroadenomas of the breast are benign tumors characterized by an admixture of stromal and epithelial tissue. Since both fibroadenomas and breast cancer can appear as similar lumps, it is currently recommended to perform ultrasound analyses and possibly tissue sampling with subsequent histopathologic analysis in order to perform diagnosis. Unlike typical lumps from breast cancer, fibroadenomas are easy to move, with clearly defined edges. Fibroadenomas are sensitive to estrogen and therefore can enlarge in women on oral contraceptives and during pregnancy.