A 41-year-old man presented for mandibular subcondylar fracture which was reconstructed with direct open reduction and internal fixation of the condyle via the retromandibular transparotid approach. Two weeks after the surgery, he revisited our outpatient office with a chief concern of swelling approximately 5×3 cm in size under the surgical incision wound on the left retromandibular area for the past 1 week (). He did not have pain; however, complained of the swelling increased during meals. Physical examination showed a soft subcutaneous cystic mass. These findings suggested a sialocele.\nA 4 mL of aspiration was performed and serosanguinous fluid was observed. Triamcinolone (0.2 mL×40 mg/mL) and bleomycin (0.2 mL×1 mg/mL) were administered. Pressure dressing was applied. However, the 2 weeks of treatment was not effective. After 2 weeks, the sialocele size did not decrease and the skin overlying the sialocele was thinning. A 5 mL of aspiration was performed again and the serosanguinous fluid had become turbid. This fluid analysis showed no bacterial growth and high amylase levels (17,250 units/L). Triamcinolone and bleomycin were administered again, and pressure dressing was applied continuously.\nWe conducted computed tomography and sialogram for the further evaluation. Computed tomography revealed a well-defined thin-walled cyst (32×22×21 mm) below the earlobe and retromandibular area between the body and tail of the parotid gland (). The lateral portion of the cyst was damaged and fluid leakage outside the cyst was noted where the skin was thin. Sialography of the left parotid gland showed no accumulation of contrast media in the sialocele location when the contrast media was injected through the intraoral Stensen’s duct orifice. It revealed no connection between the Stensen’s duct and the sialocele. A cutting edge of the inferior interlobular duct was noted (). Contrast media was percutaneously injected into the sialocele which was located at the tail of the parotid gland where the inferolateral part of the cutting end of parotid duct was positioned (). It revealed an approximately 30×25 mm cyst located at the lateral area of the transected parotid duct lesion as well as fluid leakage outside the parotid fascia. The sialocele had impending sings of trans-cutaneous fistula, which prompted surgical treatment.\nThe patient underwent surgery through the previous incision line. The sialocele was located beneath the skin and encapsulated with thin capsule that was the part of protruded parotid fascia. Dissection was conducted to parotid fascia layer. The parotid gland was dissected along the sialocele wall that was located between the parotid body and tail area (). Two openings of transected ducts were noted at the base of the inside cavity which were 1.5 cm apart and marked. After complete excision of the sialocele wall, we further dissected the both duct openings and ligated the both ends with 5-0 vicryl suture (). Fifty IU of botulinum toxin type A was injected into the parotid gland around and distal to the sialocele to block salivary secretion and preventing recurrence (). The cyst-excised space was packed with surrounded parotid glandular tissue and tightly sutured. A negative suction drain was placed and pressure dressing applied. No discharge was noted 2 days postoperatively, and the drain was removed. The patient was discharged without any symptoms. No complications or recurrence were observed at 7-month follow-up (). Postoperative computed tomography also showed no recurrence of the sialocele.
A 24-year-old otherwise healthy male patient reported with the chief complaint of watery discharge from a swelling on the right side of the face for the past 1 month. Patient had a history of mandibular condylar fracture from a road traffic accident, for which he was treated elsewhere with direct open reduction and internal fixation of the condyle. The surgical scar was observed on the post-ramus swelling, and there was fistula in one end of the scar that was about 0.5 cm in diameter [Figures and ]. The wound was 2 cm deep and had a healthy granulating margin with no obvious clinical signs of infection, but the wound continued to have a drain of a copious amount of clear, watery, and odorless fluid.\nOn examination of parotid papillae, intraorally, active secretion was present on the left side, but not on the right side. Neurological examination revealed no motor loss due to severance of any branch of facial nerve in the affected side. Location of the fistula and nature of the discharge suggested a laceration of the right parotid gland substance resulting in a sialocele and a right parotid fistula formation. Siaologram confirmed the clinical suspicion [Figures –].\nIn the present case, trauma in the parotid glandular substance lead to formation of sialocele by accumulation of extravasated saliva into glandular parenchyma. It was decided to create a controlled internal fistula with drainage intraorally under local anesthesia. After standard preparation, intraorally, a 1-cm long incision was placed on external oblique ridge behind the third molar. A small artery forceps was forced through the superficial fascia of masseter reaching the sialocele. With the help of this forceps, approximately 5-cm long, slender, sterile, punched plastic tube of diameter 4 mm was positioned with one end in the glandular substance and the other end in the mouth, seated along the vestibule, ensuring complete convenience. The tube was secured by suturing it to the mucosal surface of the cheek []. Extraorally, the wound was sutured primarily in layers, followed by compression dressing on the cheek. The patient was covered with Ciprofloxacin and Metronidazole for 5 days to prevent superadded infections. Saliva stopped draining by 10th postoperative day of surgery. The tube was subsequently removed to enable the internal fistula to close and salivary secretions to drain through the right Stenson's duct normally. The patient's recovery was uncomplicated and follow-up was done for 5 months and lost to follow-up.