That’s probably good info but best she finds out if it’s cancer or just a cyst probably not likely a infection without other symptoms but could be a cyst especially if round and will move if gently pushed first than jump to conclusions and worry her to death. She already has enough to worry about with her poor husband if it’s not cancer. Just saying, you are a caring person but put yourself in her place emotionally right now which is first defence in survival.
I read about better results using ivermectin with medicine for treating cancer so there’s something in it.