Question: For the past few years, i have been suffering from some inconvenience (for a lack of better term) during passing of stool. It started with mild irritation while passing stool and later i started feeling a small tissue coming out of the anus and going back by itself after I am done passing the stool. Recently, that tissue stopped going back by itself and when i push it back it does go back in. I feel itchy sensation and burning sensation both during and after passing my stool.
I recently visited a general surgeon and after he inspected my anus, he informed me that I have a "Polyp" and fissures in my anus. He also informed that this was formed due to infection because of "thread worms" and he told me that he will perform a small operation to remove the polyp and clean the infection.

I want to understand if this is a safe option/risks involved with this. Should I be visiting a gastroenterologist surgeon and not a general surgeon. What are the alternatives to the surgery, for instance, is "Colonoscopy" advisable here.