RT Book, Section A1 Hay, Jr, William W. A1 Levin, Myron J. A1 Deterding, Robin R. A1 Abzug, Mark J. SR Print(0) ID 1145453675 T1 Anterior Displacement of the Anus T2 Quick Medical Diagnosis & Treatment Pediatrics YR 2017 FD 2017 PB McGraw-Hill Education PP New York, NY SN 9781264257614 LK accesspediatrics.mhmedical.com/content.aspx?aid=1145453675 RD 2024/04/16 AB Common anomaly in infant girlsIn girls, diagnosis is made if the distance from the vaginal fourchette to the center of the anal opening is < 34% of the total distance from fourchette to coccyxIn boys, the diagnosis is made if the distance from the base of the scrotum to the anal aperture is < 46% of the total distance from scrotum to coccyx