Abstract
Objective: Report the clinical case of a patient diagnosed with rancula and the proposed treatment technique, where it showed resolution for the case. Case detailing: Female patient, 23 years old, attended the service, with the main complaint “I have a bubble in my mouth that disappears and comes back, and it doesn't hurt”. In the history of the current illness, the patient complains of a blister-shaped lesion, which appeared approximately six months ago, in which it often appears and disappears without apparent cause and is painless. On intra-oral examination, a single bullous lesion of violet color, smooth surface, clear boundaries, oval shape, floating, painless and located on the buccal floor were observed. The hypothesis of diagnosis was of Ranula. The lesion marsupialization was performed and the subsequent lesion confirmed by histopathology. Final considerations: Because it is a differential diagnosis of other lesions, histopathology was performed for a correct diagnosis and execution of the most appropriate treatment for the case, which would be surgery to remove the roof of the lesion, which procedure has the best prognosis. It is of great importance that the dental surgeon gain knowledge for a better treatment conduct and especially patient survival.