Thanks for asking at Healthcare Magic. I read your question and I understand your concern. Pilonidal 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 cleft 4. lack of proper hygiene I Would like to advise you to have sitz 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 Healthcare Magic. Take your best care. Regards Dr Ejaz