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Urachal cyst

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A urachal cyst occurs when a pocket of air or fluid develops in the urachus.  Before birth, the urachus is a primitive structure that connects the umbilical cord to the bladder in the developing fetus. The urachus normally disappears before birth, but part of the urachus may remain in some people after they are born.  Urachal cysts can develop at any age, but typically affect older children and adults.  Symptoms of a urachal cyst include pain in the abdomen, fever, or a lump that can be felt near the bellybutton.  A urachal cyst is most often benign, but it can sometimes turn into a cancer.  For this reason, it is recommended that surgery be done to remove a urachal cyst.[1][5889]
Last updated: 3/11/2013


  1. Urachal Anomalies. American Urological Association Foundation. 2011; Accessed 3/8/2013.
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