Patent urachus

Patent urachus is a type of congenital urachal anomaly (see this term) characterized by a persistent communication between the bladder and the umbilicus, secondary to non occlusion of the urachal lumen, manifesting as clear drainage from the umbilicus.

Allantoic cyst

A swelling formed at the base of umbilicus associated with a patent urachus which results from an allantoic remnant. The urachus is a fibrous remnant of the allantois which communicates from the apex of the urinary bladder to the umbilicus. Failed obliteration of the urachus can lead to various abnormalities: urachal cyst, urachal diverticulum, sinus or patent urachus - the most common type. Allantoic cysts in infants with patent urachus can be formed due to the drainage of urine into the umbilical cord, or in uncommon situations, after leakage of hypo-osmotic urine into the Wharton's jelly.


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(per page)
PMID (PMCID)
26213613
(4505787)
 OTHER
Case Report: Pre- and postnatal management of an allantoic cyst with patent urachus and single umbilical artery.
Trong Thach T, Duy Quan V, Diem Nghi T, Hoang Anh N, Phi Hung L, Thien Luan N, Phuoc Long N.
F1000Res. 2015;4:124.
Since an allantoic cyst with patent urachus is a rare clinical entity, early discovery, close monitoring and accurate diagnosis through ultrasound in the prenatal period may consequently allow clinicians to have suitable attitudes towards management when the infant is born.
26213613
(4505787)
 OTHER
Case Report: Pre- and postnatal management of an allantoic cyst with patent urachus and single umbilical artery.
Trong Thach T, Duy Quan V, Diem Nghi T, Hoang Anh N, Phi Hung L, Thien Luan N, Phuoc Long N.
F1000Res. 2015;4:124.
Case Report: Pre- and postnatal management of an allantoic cyst with patent urachus and single umbilical artery.
21713991
 MIXED_SAMPLE Adult
Allantoic cysts and posterior urethral valves: a case report.
Bureau M, Bolduc S.
Ultrasound Obstet Gynecol. 2011;38(1):116-8.
We report on a case in which both allantoic cysts and a patent urachus were detected antenatally and turned out to be associated with posterior urethral valves (PUV).
20103802
 MIXED_SAMPLE
Megacystis associated with an umbilical cord cyst: a sonographic feature of a patent urachus in the first trimester.
Sepulveda W, Rompel SM, Cafici D, Carstens E, Dezerega V.
J Ultrasound Med. 2010;29(2):295-300.
Postmortem examination confirmed the diagnosis of a patent urachus, an allantoic cyst, and thrombosis of the umbilical vessels.
19057858
 MALE Infant, Newborn
Allantoic cyst and patent urachus.
Pal K, Ashri H, Al-Ghazal FA.
Indian J Pediatr. 2009;76(2):221-3.
We describe a case of allantoic cyst and patent urachus in a newborn associated with hypospadias and meatal obstruction.
19125263
 MIXED_SAMPLE Infant, Newborn
Prenatal management of an allantoic cyst with patent urachus.
Weichert J, Chiriac A, Kaiser M, Thorns C, Axt-Fliedner R.
Arch Gynecol Obstet. 2009;280(2):321-3.
We report a case of a patent urachus with an allantoic cyst diagnosed prenatally at 14 weeks of gestation and its spontaneous course throughout ongoing pregnancy.
19125263
 MIXED_SAMPLE Infant, Newborn
Prenatal management of an allantoic cyst with patent urachus.
Weichert J, Chiriac A, Kaiser M, Thorns C, Axt-Fliedner R.
Arch Gynecol Obstet. 2009;280(2):321-3.
Prenatal management of an allantoic cyst with patent urachus.
16847597
 MIXED_SAMPLE Infant, Newborn
Allantoic cyst: a prenatal clue to patent urachus.
Bunch PT, Kline-Fath BM, Imhoff SC, Calvo-Garcia MA, Crombleholme TM, Donnelly LF.
Pediatr Radiol. 2006;36(10):1090-5.
A patent urachus, which is typically diagnosed as leakage from the umbilicus postnatally, can present as an allantoic cyst in the umbilical cord antenatally.
16847597
 MIXED_SAMPLE Infant, Newborn
Allantoic cyst: a prenatal clue to patent urachus.
Bunch PT, Kline-Fath BM, Imhoff SC, Calvo-Garcia MA, Crombleholme TM, Donnelly LF.
Pediatr Radiol. 2006;36(10):1090-5.
We report a case of a patent urachus with an allantoic cyst diagnosed via fetal MR imaging at 24 weeks' gestation.
9444055
 MIXED_SAMPLE Adult
Persistent patent urachus with allantoic cyst: a case report.
Tolaymat LL, Maher JE, Kleinman GE, Stalnaker R, Kea K, Walker A.
Ultrasound Obstet Gynecol. 1997;10(5):366-8.
Persistent patent urachus with allantoic cyst: a case report.