Lacrimal sac diverticula associated with a patent lacrimal system

Purpose: To describe the clinical features of lacrimal sac diverticula. Methods: Orbital masses were evaluated in 3 patients. One patient had a lar ge tumor extending from the medial orbit associated with upward globe displ acement, one had a mass inferior to the medial canthus, and one had an infl amed mass in the right lower lid. Two of the patients had no history of chr onic epiphora, sinus disease, or nasal trauma. In all patients, irrigation demonstrated lacrimal drainage system patency. Results: Surgical exploration confirmed the diagnosis of lacrimal sac diver ticulum in all patients. Two diverticula were associated with a dacryolith. Each patient was successfully managed with excision of the diverticulum an d dacryocystorhinostomy. Conclusions: Lacrimal sac diverticula should be considered in the diagnosis of medial orbital turners, and computed tomography is useful in the diagno sis of lacrimal sac diverticula.