Definition: Cyst occurring in a persistent portion of the urachus, presenting as an extraperitoneal mass in the umbilical region. It is characterized by abdominal pain, and fever if infected. It may rupture, leading to peritonitis, or it may drain through the umbilicus.
non-neoplastic; /blood supply /chem /secret /ultrastruct permitted; do not confuse with patent urachus (index under URACHUS /abnorm)
