<prompt> Regarding ranula, all are true except -Retention cystArises from submandibular glandTranslucentPlunging may be a feature  <response>: A ranula is a mucous retention cyst which arises from sublingual salivary gland and presents as fluctuant swelling with a bluish translucent colour.Types of RanulaRanula may be of two types : -1Simple : - Situated in the floor of mouth without any cervical prolongation.2Deepplunging : - Ranula with a cervical prolongation in submandibular region. 