Objective To investigate the value of ultrasonography in the diagnosis of perianal abscess and anal fistula.Methods 272 patients with perianal abscess and anal fistula were recruited from our hospital from February 2015 to February 2016.Ultrasonic scanning of anal tube and surrounding soft tissues was performed before the surgery.Findings from the surgery and pathology were regarded as the golden standard.The accuracy of ultrasound in diagnosis of perianal abscess and anal fistula were analyzed.The accuracy...