TY - JOUR AU - Santichatngam, Prinya AU - Chumnanua, Yotthapong PY - 2014/03/31 Y2 - 2024/03/29 TI - Types of Fistula in Ano and Postoperative Outcomes at Maharat Nakhon Ratchasima Hospital JF - The Thai Journal of Surgery JA - Thai J Surg VL - 35 IS - 1 SE - Original Articles DO - UR - https://he02.tci-thaijo.org/index.php/ThaiJSurg/article/view/226365 SP - AB - <div><strong>Background:</strong> A fistula in ano is an abnormal tract or cavity communicating with the rectum or anal canal by<br>identifiable internal opening. Recurrent rates after treatment may approach 25%.</div><div><br><strong>Objective:</strong> To assess the relative prevalence of each type of fistula in ano, describe intraoperative findings and<br>determine recurrence rate.</div><div><br><strong>Patients and methods:</strong> Fistula in ano patients who underwent operation from 1 January 2009 to 31 July 2010 at<br>Maharat Nakhon Ratchasima Hospital were prospectively studied.</div><div><br><strong>Results:</strong> There were 120 patients (101 men, 19 women), aged between 2 to 87 years (mean age 42.4 years). Fistulain-<br>ano was simple in 84 patients (70%) and complex in 36 patients (30%). Among the complex fistula in ano patients<br>were those with high transphincteric fistula in 9 cases (25%), extrasphincteric in 1 case (2.8%), anterior fistula in the<br>female in 7 cases (19.4%), coexistent with inflammatory bowel disease in 5 cases (13.9%), with multiple simultaneous<br>fistula in 10 cases (27.8%), and had prior sphincter surgeries or injuries in 4 cases (11.1%). Fistulotomy was done in<br>75 cases (62.5%), core out fistulectomy in 28 cases (23.3%), seton drainage in 16 cases (13.3%), advancement flap in<br>1 case (0.9%). Overall recurrence was 15% (18 cases). Recurrent rates were 41.7% (15 cases) in the complex fistula in<br>ano group and 3.6% (3 cases) in the simple fistula in ano group, which were significantly different (P &lt;0.05).</div><div><br><strong>Conclusion:</strong> Simple fistula in ano was found in 70% and complex fistula in 30% of patients. Overall recurrence<br>rate was 15%; for the complex fistula group the recurrence was 41.7%, which was significantly different from the simple<br>fistula group (3.6%).</div> ER -