Brief Answer: visit your gynaecologist Detailed Answer: Hi, Thanks for writing to us. There could be many causes for nipple discharge. I agree that any benign brain growth or a pitutary tumor can cause nipple discharge. As you had three brain surgeries previously, so probably any benign growth in brain is not the cause of your discharge presently. Other causes could be ductal ectasia, ductal pappiloma, breast cancer etc. As there is a nipple growth along with discharge, in my opinion a mammography and if required a biopsy of growth is required. Ductal ectasia and pappiloma( both benign) as well as carcinoma are quite common in your age group, so its better that you meet a gynaecologist as soon as possible. Hope this helped. Take care

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