What is mucocoele of the lip?

A mucocoele (American spelling ‘mucocele’) is another name for mucous cyst. Mucocoele form when mucus or saliva escapes into surrounding tissues and a lining of granulation or connective tissue is formed to create a smooth, soft round fluid-filled lump. They most commonly occur on the inner surface of the lower lip (75% of cases) but may also appear on the floor of the mouth (in this region they are known as ranulae) or on the gingiva (gums), buccal mucosa (inner lining of the cheeks) and tongue.

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Source: dermnetnz.org