Mucocele is a clinical term that includes mucus extravasation phenomenon and mucus retention cyst.
An extravasation phenomenon is a tissue swelling that may occur as a result of pooling of mucus in the surrounding connective tissue, from a severed excretory duct.
This severing of the duct could be due to trauma, like lip biting, cheek chewing or tongue thrusting.
A mucus retention cyst is a swelling manifesting as a result of obstruction of excretory duct due to a sialolith, resulting in accumulation of mucus in the duct.
Ranula is a mucocele (may be extravasation type or retention type) specifically occurring in the floor of the mouth.
► Read also: ORAL MEDICINE : Mucocele vs Ranula
Fuente: Youtube / Hack Dentistry