HPV 16 positive - Base of tongue cancer

My husband has been recently diagnosed with base of tongue SCC which has metastasized to lymph nodes in neck.  (Treatment with chemo and radiation is to begin soon with some light at the end of the tunnel.  We've been told it's very treatable.) The biopsy indicated the cells were positive for HPV 16.  We have been married almost 25 years.  I checked with my doctor and have never had an abnormal pap, even up through 01/08, and had total hysterectomy in 02/08.  Any thoughts?  Where did it come from?  I've very confused, and so is he.  

[Naveed777]

Our immune systems gets rid of most of the hpv infections caused by whether low or high risk strain of the virus... It seems like you might have got infected with the same strain but your body might have covered from the infection... Your husband might be weaker with his immune system and couldn't fight off the infection... Best of luck with the treatments and he should be very fine soon...