Well, most people go through surgery anyway, in fact in a lot of tumors it's surgery first, chemo later.
Also Steel and for other people too:
Teratomas are basically fetal cell tumors, they form during gestation when cells fail to differentiate or migrate properly and when they go malignant they usually differentiate into all kinds of shit (I've seen pictures of removed teratomas containing skin, hair and teeth)
Well, if what you have is a teratoma... That would very probably and pretty much explain the whole "testicular cancer in lungs" thing.
Anyway, good luck and keep getting better... A big part of it is actually wanting to go through it.