Conditions	Features	What Your Doctor May Recommend
Cysts	Fluid-filled lumps Usually not cancer Occur most often in women ages 35-50 Often in both breasts Some too small to be felt	Doctors often watch cysts over time or use fine-needle aspiration to remove the fluid from the cyst Ultrasound may be used to see whether a lump is solid or filled with fluid
Fibroadenoma	Hard, round, benign growth Feels like rubber; moves around easily Usually painless Often found by the woman herself Appears on mammogram as smooth, round lumps with clearly defined edges Can get bigger when a woman is pregnant or nursing	Sometimes diagnosed with fine-needle aspiration If the fibroadenoma does not appear normal, the doctor may suggest taking it out to make sure it is benign
Macrocalcifications	Appear on a mammogram as large calcium deposits Often caused by aging Usually not cancer If they are grouped together in a certain way, they may be a sign of cancer	Another mammogram to have a closer look at the area A biopsy may be used for diagnosis
Lump (or "mass")	May be round and smooth May be caused by normal hormone changes Irregular borders may be a sign of cancer	A mammogram and/or ultrasound may be used to see whether a lump is solid or filled with fluid A biopsy may be used for diagnosis
Microcalcifications	Appear on a mammogram as tiny specks of calcium that might be in an area of rapidly dividing cells If they are grouped together in a certain way, they may be a sign of cancer	Another mammogram to have a closer look at the area A biopsy may be used for diagnosis