Urethral caruncle is caused by redundancy of the mucosa combined with laxity of the periurethral fascia, and it may be aggravated by an increase in intra-abdominal pressure and a relative lack of estrogen.Patients may be asymptomatic or may present with urethral bleeding, urinary urgency or frequency, or dysuria.ymptoms of Urethral caruncle. Patients may be asymptomatic or may present with urethral bleeding, urinary urgency or frequency, or dysuria. Unlike a neoplasm, which generally is firm and nontender, a caruncle is soft and may be tender.