[sarah]

Hello Rebecca,
could be radiation.
I've been off all treatment for a year and a half (herceptin, Femara) and 6 years out from chemo and radiation but.....
I've had a slight breathing problem with hills for about 6 years
They discovered I had a fibroid in my lung from radiation then.....this winter in the cold mornings when I walked my dog, I had to stop because I had pain in my chest - stupidly I thought it was winter asthma (my mom had asthma) but....
go to my GP, she's says probably your heart but I'm sending you to a cardiologist and pneumologist. both found problems but....had a coronography (looks up the arteries) and voila, blocked artery, no plak to speak of ---- all due to radiation. so just had an angioplasty and stent put in.
I had 2 differeent cardiologists do echos on my heart and EKGs and both were great, no problems. but on a scintigraphy (hope the word's the same in English) the cardiologists saw heart muscle damage and informed me that I'd had a heart attack --- that was the chest pain and problem breathing!!! shock to me!!! and they said no way it was the herceptin and that the radiation caused it. Every single doctor (different hospitals, didn't talk to each other), all said it's the radiation and even checked my tattoo points.
So I think I may post something about the potential of radiation induced heart problems so people are awate of symptoms.
good luck with your problems.
health and happiness
sarah