Kazan medical journalKazan medical journal0368-48142587-9359Eco-Vector5906910.17816/kazmj59069EditorialTo the casuistry of complete non-closure of the urachusKyrbanaevaS. S.info@eco-vector.comAladuskinaT. I.info@eco-vector.com2803196748263642301202123012021Copyright © 2021, Kyrbanaeva S.S., Aladuskina T.I.2021<p>The urachus is the remainder of the duct between the embryonic bladder and the extraperitoneal part of the allantois. By 5-6 months of intrauterine life, the lumen is obliterated into the cord - the vesicoumbilical ligament. In some cases, duct obliteration does not occur.</p>Kazan Medical archiveКазанский медицинский архив