What causes the lump?

Lump UNDER your left breast that causes a lot of pain Went for ultrasound and your dr is sending you to see a surgeon on Monday What would cause such a large solid lump?

• Answer:

  Many possible causes exist for pain or tenderness in one of your breasts or in both breasts. Most often the pain can be attributed to harmless causes such as puberty or pregnancy. It can also be a recurrent problem for women with cyclical pain associated with the menstrual cycle. Although cancer is a major concern for most women, it is rarely the cause of isolated breast pain. Some causes of breast pain are: Fibrocystic breast disease Premenstrual syndrome, cyclic mastalgia Normal hormonal fluctuations Onset of puberty or menopause Pregnancy Breastfeeding (nursing) Estrogen therapy Chest wall tenderness (costochondritis) Injury to the breast (trauma, after breast surgery)