<s>[INST] I have pilonidal cyst, for the third time in a year and half! I just had the second surgery last August and they did and excision. I would like to know what there is to do to get rid of this for good. And I would like to know if it could become cancerous [/INST] Thanks for asking at Chat Doctor. I read your question and I understand your concern. Colonial cyst recurrence after surgery occurs due to four reasons. 1. lack of proper surgical procedure 2. Prolonged sitting 3 Not shaving the area near tail bone if in natal cleft4. Lack of proper hygiene I Would like to advise you to have site bath, use to shave the affected area if hairy, proper hygiene and if problem persist then ask your surgeon to have Marsupilzation procedure for its removal. There is minimal risk of squamous cell carcinoma. Hope it helps best. Don't forget to rate this answer and close the discussion at Chat Doctor. Take your best care. Regards Chat Doctor.  </s>