Was you husbands tumor in a new location or was it a recurrence?
We'll never know! His primary tumor wasn't found when he was first diagnosed 4+ years ago, so this rectal one could either be a second primary (the onc's opinion), or it could be the original primary that finally became large enough to be detectable (the rectal surgeon's opinion). I read a research article that shows that primary tumors as small as a pencil head can metastasize...