Endoscopic ultrasound. As an alternative to MRI that creates very similar photos, an endoscopic ultrasound goes within your anus by using a very small lighted camera plus a small ultrasound probe. Your surgeon might then eliminate all the fistula tract from this Area or scrape out the infected tissue within. https://sarthicare.com/top-benefits-of-choosing-laser-fissure-treatment-in-gurgaon/