Ranula
Ranula
This is a relatively uncommon benign cyst in children and adolescents that appears in the floor of the mouth as a result of blockage of the salivary duct located under the tongue. Just like other mucous retention cysts (formed by pooled saliva), Ranulas tend to be relatively painless; however most of them will require surgical treatment. Your dentist will refer you to an oral surgeon for evaluation and treatment.