RESUMO
An oral ranula is a retention cyst that arises from the sublingual gland as a result of ductal obstruction and fluid retention. This report describes the successful management of a rare case of oral ranula in an infant. A 4-month-old male infant was referred for emergency treatment due to a 2-month history of a swelling in the right sublingual region. The examination revealed a lesion of approximately 3.5 cm in diameter, which was jeopardizing the infant's breastfeeding. The lesion's dimensions suggested a ranula. Surgical specimens were sent for histopathological analysis to confirm the diagnosis. Although there are many different ways to treat an oral ranula, the marsupialization method was followed in this case due to the serious consequences of the infant's restricted access to nourishment. The treatment proved to be successful and after 18 months of follow-up, there was no sign of recurrence.
