Behind the nipple on the right side there feels to be a hard lump, nipple still has function of cold or hot reactions, sometimes it feels small sometimes it feel bigger..

Doctor can examine: One's primary care doctor can evaluate. Lumps and bumps in the breast area are best examined by a doctor because of the possibility of breast cancer. Teen boys and men can have breast buds (about 1/2 to 1 inch wide) under one or both nipples. Men can have breast cancer, but it is quite rare. Women with any breast symptoms must rule out cancer.