urachal cyst(redirected from Cyst of urachus)
a cystic remnant in the urachus derived from the intraembryonic part of the allantois.
urachal cystA cyst that develops in the urachal sinus between the obliterated cephalad end of the urachus at the umbilicus and caudal end at the bladder dome. They are rarely symptomatic during infancy but are found incidentally in early childhood or adolescence during bladder ultrasonography for other reasons (e.g., urinary tract infections).
Often related to infection (most often due to Staphylococcus aureus) and inflammation (suprapubic mass, fever, pain, voiding symptoms), and rarely death due to intra-abdominal rupture.