True about ranula

The term 'ranula' is applied to a mucous extravasation cyst that arises from the sublingual gland.It produces a characteristic translucent swelling that takes on the appearance of a 'frog's belly' (ranula). A ranula can resolve spontaneously, but many also require active treatment. The traditional and effective way is to remove the sublingual gland. Incision and drainage, however tempting, usually results in recurrence.Plunging ranula is a rare form of mucous retention cyst that arises from the sublingual salivary glands. Mucus collects below the gland and perforates through the mylohyoid muscle diaphragm to enter the neck. Patients present with a dumbbell-shaped swelling that is soft, fluctuant and painless in the submandibular or submental region of the neckRef: Bailey and love, page no: 799