 [ Symptoms ] i had a ct scan for my lung doctor and was told they seen a mass on the left side of my breast what could this be  i am a 58 year old women if this is any help to you [ Disease ] i do not know a medical professional would need to see this scan and correlate it with clinical findings a breast exam show the scan to your doctor and have him or her render an opinion not all masses are serious or cancer so do not be prematurely concerned