A 13-year-old Indo-Caucasian girl came to our hospital with a history of clear watery discharge from a wound just above and behind the angle of her right jaw for two years. The discharge increased while eating food and chewing. Her medical history revealed a swelling just behind her right jaw associated with a throbbing type of pain and fever two years ago, which burst open with pus discharge. A week later, she started getting a clear watery discharge from the affected site.\nOn examination, there was a pinpoint size opening just posterosuperior to the angle of the mandible with a continuous dribbling of clear serous fluid and scarring of the surrounding area (Figure ). Laboratory analysis of the fluid revealed raised salivary amylase levels (7800 IU/mL), which confirmed the diagnosis of a salivary fistula. Our patient was successfully managed by a simple surgical technique, described below.\nThe procedure was performed under general anesthesia with local infiltration of 1 in 100,000 adrenaline around the fistulous opening to minimize intra-operative bleeding. Methylene blue was then injected into the fistulous opening using a 26-gauge needle (blunt tip) under microscopic magnification. The dye was seen exiting from the natural opening of the Stenson's duct, indicating a patent ductal system. An elliptical incision of 1 cm diameter was taken around the fistulous opening, which included the scar tissue. The skin island was then held with skin hooks and the subcutaneous tissue dissected until the fistulous tract containing dye was visible (Figure ). The fistulous tract was then traced proximally until it entered the thick parotid fascia. The fascia was then incised and the tract was seen entering the superficial lobe of parotid. It did not extend up to branches of the facial nerve. At this level, the superficial lobe of parotid was carefully dissected and the fistulous tract was completely excised (Figure ). The parotid fascia was approximated and sutured with 3-0 vicryl and the wound closed in layers. The skin was closed using 3-0 silk sutures (Figure ) and a tight pressure dressing applied. Following surgery, there was no facial nerve deficit.\nPost-operatively, our patient was kept on nil by mouth for 24 hours and put on intravenous fluids, antibiotics, atropine and analgesics. Our patient was discharged on oral antibiotics and analgesics on the third post-operative day. Her sutures were removed on the seventh day. Histopathological examination of the fistulous tract showed no underlying malignancy or evidence of any specific (granulomatous) disease. Our patient was followed up three months later and was found to have successful healing of her wound with no complications or recurrence (Figure ).
A 38-year-old man reported to the department of oral and maxillofacial surgery with a history of fall. He was diagnosed with left subcondylar, left angle and right parasymphysis fractures. He was thoroughly investigated and open reduction and internal fixation was done under general anesthesia.\nA mini-retromandibular approach was used for the fixation of the subcondylar and angle fracture, while parasymphysis fracture was reduced intraorally. On the seventh postoperative day, a diffuse swelling was observed in the left parotid region and on compressing the swelling; a watery, odorless discharge was seen from the sutured surgical wound [].\nA diagnosis of parotid fistula was made on the basis of history, location of swelling and clinical inspection of the discharge. The pressure dressing was applied for first four days after the aspiration along with antisialagogues and antibiotics. There was no significant decrease in the size of swelling or discharge.\nAfterwards we decided to use hot hypertonic saline injections. A 3% hypertonic saline was poured in a clean steel bowl and was heated to a temperature of 60 degree in an autoclave previously set at the required temperature. The mentioned site was prepared by scrubbing with Betadine solution. Five milliliter of this hypertonic solution was injected into the parotid through fistulous opening, followed by pressure dressing. The patient was instructed to continue same medicines. This procedure was repeated for three days. On the fourth day the patient did not show any signs of swelling or salivary leak as the fistula closed spontaneously.\nPressure dressings and use of antisialagogues cause fibrosis of the gland in 2 to 3 weeks;[] hence closure of fistula in 4 days was attributed to warm hypertonic saline injections. Follow-up was done for 5 months with no morbidity seen. The facial nerve and its branches were evaluated and were found to be normal.