Document Detail

Persistent patent urachus with allantoic cyst: a case report.
MedLine Citation:
PMID:  9444055     Owner:  NLM     Status:  MEDLINE    
Patent urachus results when there is a persistence of an allantois remnant which normally undergoes atresia during embryological development. It can lead to an abdominal wall defect similar in appearance on ultrasound to an omphalocele. A 34-year-old primigravida presented at 19 weeks' gestation for evaluation of a cystic mass arising at the umbilical cord insertion. The initial impression of the referring physician was an omphalocele. The mass arose from the abdominal wall and the umbilical cord inserted into the membranous covering of the mass, which appeared to be fluid-filled and separate from but contiguous with the urinary bladder. Serial sonography followed the progression of the abdominal wall mass. At term, the patient underwent primary Cesarean section with delivery of a 4494-g male infant. The infant underwent repair and closure of the patent urachus and plastic reconstruction of the abdominal wall. When the urachus remains patent, it can lead to a urinary fistula which mimics the ultrasound appearance of an omphalocele. However, patent urachus is associated with a much lower rate of abnormalities than omphalocele, yielding a better fetal prognosis.
L L Tolaymat; J E Maher; G E Kleinman; R Stalnaker; K Kea; A Walker
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology     Volume:  10     ISSN:  0960-7692     ISO Abbreviation:  Ultrasound Obstet Gynecol     Publication Date:  1997 Nov 
Date Detail:
Created Date:  1998-02-24     Completed Date:  1998-02-24     Revised Date:  2004-11-17    
Medline Journal Info:
Nlm Unique ID:  9108340     Medline TA:  Ultrasound Obstet Gynecol     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  366-8     Citation Subset:  IM    
Department of Obstetrics and Gynecology, University of Florida, Pensacola 32503, USA.
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MeSH Terms
Fetal Diseases / ultrasonography*
Ultrasonography, Doppler, Color
Ultrasonography, Prenatal*
Urachal Cyst / complications*,  ultrasonography*
Urachus / abnormalities*,  ultrasonography*

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