title: The perianal "horseshoe".
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, 90, Yishun Central Singapore, Yishun, 768828, Singapore. ashchawla@gmail.com.
authors.forename: Ashish
authors.initials: A
authors.lastname: Chawla
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, 90, Yishun Central Singapore, Yishun, 768828, Singapore. minon.tan@mohh.com.sg.
authors.forename: Min-On
authors.initials: MO
authors.lastname: Tan
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, 90, Yishun Central Singapore, Yishun, 768828, Singapore. spmanickam@yahoo.com.
authors.forename: Manickam
authors.initials: M
authors.lastname: Subramanian
authors.affiliation: Department of Diagnostic Radiology, Khoo Teck Puat Hospital, 90, Yishun Central Singapore, Yishun, 768828, Singapore. jeromeanvidhya@gmail.com.
authors.forename: Jerome Irai Ezhil
authors.initials: JI
authors.lastname: Bosco
mesh_terms: D000038:Abscess / Q000175:diagnosis*; D001004:Anus Diseases / Q000175:diagnosis*; D003937:Diagnosis, Differential; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D012003:Rectal Fistula / Q000175:diagnosis*