This information is provided by the National Institutes of Health (NIH) Genetic and Rare Diseases Information Center (GARD).
A urachal cyst is a sac-like pocket of tissue that develops in the urachus, a primitive structure that connects the umbilical cord to the bladder in the developing baby. Although it normally disappears prior to birth, part of the urachus may remain in some people. Urachal cysts can develop at any age, but typically affect older children and adults. Urachal cysts are often not associated with any signs or symptoms unless there are complications such as infection. In these cases, symptoms may include abdominal pain, fever, pain with urination and/or hematuria. Urachal cysts may be monitored, or they may be treated with surgery to drain the cyst and/or remove the urachus.
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