TY - CHAP M1 - Book, Section TI - Patent Urachal Duct A1 - Barlotta, Kevin S. A1 - Stack, Lawrence B. A1 - Knoop, Kevin J. A2 - Knoop, Kevin J. A2 - Stack, Lawrence B. A2 - Storrow, Alan B. A2 - Thurman, R. Jason Y1 - 2021 N1 - T2 - The Atlas of Emergency Medicine, 5e AB - When the vestigial urachal duct is not obliterated during development, drainage can occur from the bladder to the umbilicus. Urachal cysts may also be present, detectable as a painful mass between the umbilicus and pubis when they become infected or by ultrasound. Rarely, adenocarcinoma may form in these remnants. SN - PB - McGraw-Hill CY - New York, NY Y2 - 2024/03/29 UR - accessemergencymedicine.mhmedical.com/content.aspx?aid=1181041045 ER -