http://www.ncbi.nlm.nih.gov/entrez/q...=pubmed_docsum
There is a growing body of medical literature suggesting that herceptin is actually a "radiosensitizer"--that it is that it makes radiation treatments more effective!
My partner Rachel had radiation and herceptin at the same time (and on on the left side) a few years back and it seemed to go fine...
All the best,
Jeff