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 37-year-old male patient reported to the Department of Oral and Maxillofacial Surgery with a chief complaint of pain, difficulty in closing the mouth, and swelling on the left side of the face following a road traffic accident. Direct open reduction and internal fixation via transparotid approach of the left condyle were performed []. Ten days later, the patient presented with a swelling on the left side of the face. On extraoral examination, there were no clinical signs of infection or drainage in the surgical wound and no local rise in temperature was noted. On intraoral examination, salivary secretion through the stenson's duct was relatively reduced on the left side. Neurological examination revealed that no motor loss due to severance of any branch of facial nerve in the affected side. Aspiration was done on dependable swelling which gained a 6 ml of clear, watery, and odorless fluid aspirate, giving an impression of saliva []. A laboratory test confirmed the presence of salivary amylase in the aspirate.\nIn this case, trauma in the parotid glandular substance leads to the formation of sialocele by the accumulation of extravasated saliva into the glandular parenchyma. Pressure dressing and antibiotics were given to prevent infection. Postoperatively, repeated aspiration along with compressive dressing was performed but did not result in healing. Hence, decided to place an intraoral drain under local anesthesia.\nAfter standard aseptic preparation, intraorally, a 1 cm long incision was placed on external oblique ridge behind the third molar. A small curved artery forceps were inserted through the superficial fascia of masseter reaching the sialocele. Approximately 5 cm long, slender, sterile, punched plastic tube of diameter 5 mm (intravenous cannula) [] was positioned with one end in the glandular substance and the other end in the mouth with the help of the forceps. The tube was secured along the vestibule by suturing it to the mucosal surface of the cheek, ensuring complete convenience to the patient []. After placing such a drain, there was no pooling of saliva in the glandular substance. This would have allowed healing of the gland and subsequent formation of structures necessary for drainage through the main Stensen's duct. The patient's recovery was uncomplicated, and follow-up was done for 5 months.