Fistulas can be caused by an infection that starts in the anal gland. The fistula can cause a lot of discomfort when you try to sit down. The infected fistula can secret smelly pus and if the infection is bacterial then the fistula needs to be treated promptly to avoid further complications. Dr Sarita Patil is a well-known lady specialist in Baner and Pimpri Chinchwad area. She provides correct diagnoses and effective treatments. To book your appointment, do visit our website http://www.ladypilesdoctorpune.com/.