Presentation
Chronic perianal discharge.
Patient Data
Age: 50 years
Gender: Male
From the case:
Perianal fistula - inter-sphincteric type
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/127146/annotated_viewer_json?iframe=true\u0026lang=us"}
A 42 mm thick-walled tract starts at the left perianal region and courses upwards between internal and external anal sphincters to open into the anal canal at 6 o’clock orientation.
No evidence of the perianal abscess is depicted.
Case Discussion
Imaging findings are compatible with grade I low-type intersphincteric perianal fistula without evidence of the perianal abscess.