What is Fistula ?. A fistula is an abnormal connection between an organ and another structure. Fistulas develop when an organ becomes inflamed or injured. ... Fistulas can also form between the: rectum and vagina. intestine and skin. Dr Gowri Singh is very good at following surgeries breast surgeries:breast lumpectomy, mastectomy, breast conservative surgeries & all breast-related diseases general surgeries: hernia, piles, fissures, fistula, gallbladder surgeries, appendix, small bowel surgeries, thyroid surgeries, any abdomen surgeries, surgeries for swellings at any sight etc. Laparoscopic surgeries: a hernia, hiatus hernia, laparoscopic cholecystectomy, laparoscopic appendectomy & other diseases related to gastrointestinal tract. Laser surgeries: special laser surgery for piles, fissures & fistula.