male nipple discharge, local physician perscribed antibiotics. did not work.  niple is also sore and can feel a lump behind nipple.  what could this be.  this started 3 years ago when i was at the gym taking hormones. then stopped/ havent been taking any supplements n over 3 years.
Please get a biopsy or FNAC of the lesion done. Male breast mass with nipple discharge may be a carcinoma. Full evaluation is a must. Meet your surgeon.