Sophie,
It can also spread through the blood (tumors send out thousands of cancer cells into the blood stream every day but most, if not all, are taken out by the immune system) and also can end up in places where the blood goes through transitions such as the lungs or liver. It can also migrate throught the respiratory system, esophagus, etc. Some of the HPV induced cancers can also appear in the anus and no one knows the etiology behind that.

You are early stage with unknown mestastesis or nodal involvement. Did they perfrom a PET or PET/CT prior to treatment? That can rule out a lot of things plus verify the tumor as well.

You should be getting option 2 regardless of whether or not you get a ND ("watchful waiting").

Typically stage 1 tumors are treated by surgical resection only.

A ND done after the fact is also called "salvage surgery".

Gary Allsebrook
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Dx 11/22/02, SCC, 6 x 3 cm Polypoid tumor, rt tonsil, Stage III/IVA, T3N0M0 G1/2
Tx 1/28/03 - 3/19/03, Cisplatin ct x2, IMRT, bilateral, with boost, x35(69.96Gy)
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"You are a mist that appears for a little while and then vanishes" (James 4:14 NIV)