Is it common?
Yes - a common alteration in the breast that occurs with aging
What causes it?
As women progress through the menopause the breast ducts shorten and dilate. The duct walls thicken and fill with fluid
How does the nipple appear?
Slit like retraction
Can discharge occur?
In some women it may cause a cheese like nipple discharge
Often thick and can be green
Is treatment required?
No