No a squamous cell would not come and go but would be expected to behave in an abnormal and gradually progressive fashion..
The cryo treatment WOULD NOT cause that to spread if you had any such cells.
I think a small isolated lesion is fine to do cryo as your dermatologist did...
I understand your concern to not be neglectful and agree that you do want to watch that area but the treatment would also take out isolated and small nidus of squamous cell if that existed..
If squamous cell should be more suspect then an excision is prefered to examine the margin of the biopsy to ensure they are clear.
The procedure as you had is less disfiguring in its potential and that probably weighed on the choice as well.
I think the doctor that did your cryo procedure would have opted for biopsy if he had thought that a squamous cell was likley...
I think the decision to freeze was both the assesment that it fit more with actinic keratosis and the lower wound area to your face and better healing..
So I think that you will be fine her is the bot***** *****ne.
I hope that this is helpful for you. Let me know if you have further questions. I will be happy to get back with you! Best Regards,
Anthony Bray MD