Trigonitis is usually asymptomatic. It can sometimes present with urinary frequency, urgency, and pain. Unlike keratinizing squamous metaplasia, it is not a premalignant lesion. While its name suggests inflammation, it is more accurately described as a result of chronic irritation.
Infection and indwelling catheters may predispose a patient to trigonitis. It most often occurs in premenopausal women and affects almost 40% of adult females and less than 5% of adult males.
N30.30 – Trigonitis without hematuria
74445007 – Trigonitis
Differential Diagnosis & Pitfalls