Anorectal procedures range from minimally invasive to extensive, depending on the patient's needs. Hemorrhoidectomy, anal fissure surgery, and lateral internal sphincterotomy are some common surgeries to treat haemorrhoids, anal fissures, and fistulas. Laser Surgery for Piles, Fissure And Fistula. Talk to our expert doctor at Yashashree Hospital to learn more about which anorectal surgery might be right for you.