Bilateral plunging ranula: A case report

Plunging ranula is the extravasation of saliva from the sublingual gland caused by trauma or obstruction of the duct, extending through a defect in the mylohyoid muscle into the submandibular gland. The prevalence of plunging ranula is estimated to be about 2.6 per 100,000 cases with mostly unilateral lesions. Bilateral plunging ranula are rare, with only a few cases reported. This case report describes an 11-year-old boy who was diagnosed with bilateral plunging ranula by radiologic examination of ultrasound and CT scan. The patient underwent extirpation surgery with the result of ranula on histopathologic examination. Six-month follow-up after extirpation, the patient was asymptomatic and no sign of recurrence.