Abstract: PURPOSE: To investigate the feasibility and curative effect of use of seminal vesicle speculum for diagnosis and treatment of obstructive salivary gland diseases. METHODS: Eleven patients diagnosed with obstructive salivary gland diseases from October 2018 to July 2019 in the Department of Oral and Maxillofacial Surgery of Qingdao Municipal Hospital Affiliated to Qingdao University were collected. All patients underwent preoperative CT examinations to quire detailed information of the number, location and size of stones. The intraductal features in salivary gland were directly observed by seminal vesicle endoscopy under general anesthesia and simultaneous removal of the obstructive objects. Postoperative efficacy was observed and evaluated. RESULTS: Preoperative CT examinations showed no calculi in 3 cases of parotid gland and 1 cases of submandibular gland, single or multiple intramedullary dense stone shadows were found in 7 cases of submandibular gland. In 10 patients, obstruction disappeared after removing the calculi or catheter dilation and lavage with seminal vesicle. In one case with obvious stenosis of the catheter orifice, a small incision was added at the floor of mouth to take the calculi. No symptom recurred during the follow-up of 6 to 12 months after operation. CONCLUSIONS: Seminal vesicle speculum can be used for diagnosis and treatment of obstructive salivary gland diseases, which can partially replace the function of sialoendoscopy as an innovative minimally invasive treatment.

Key words: Obstructive salivary gland disease, Seminal vesicle speculum, Sialoendoscopy, Sialolith, Chronic obstructive parotitis