Diagnostic and Therapeutic Norms
Copyright ©The Author(s) 2022.
World J Gastrointest Surg. Apr 27, 2022; 14(4): 271-275
Published online Apr 27, 2022. doi: 10.4240/wjgs.v14.i4.271
Figure 1
Figure 1 Height of penetration of external sphincter parameter. Demonstration of height of penetration of external anal sphincter by the fistula tract in the patient included in accompanying video (Video 1). Approximately 2/3 of the external sphincter is involved by the fistula tract. The yellow arrow demonstrates the point of penetration of external anal sphincter by the fistula tract.