Oral mucocele is a benign mucus-filled swelling, usually on the inner lower lip after repeated lip biting or minor trauma.
Treatment
Small, recent, painless lesions: may be observed for a short period if they shrink or rupture on their own. Avoid lip biting, squeezing, or trying to puncture it yourself.
Persistent, recurrent, large, or bothersome lesions: refer to a dentist, oral medicine specialist, or oral and maxillofacial surgeon.
Complete surgical excision, including nearby minor salivary gland tissue, is the usual definitive treatment and also permits histopathologic confirmation.
Micro-marsupialization can be a less invasive option, particularly in children or selected superficial lesions. A small comparative study found resolution in 80% with micro-marsupialization versus 90% with excision; recurrent lesions were then treated with excision (study report).
Other clinician-performed options include laser ablation/excision, cryotherapy, electrosurgery, or marsupialization in appropriate cases.
Simple drainage alone commonly refills, so it is generally not the most durable approach. Andrews' Diseases of the Skin states that excisional biopsy both confirms the diagnosis and eliminates the lesion; laser and cryotherapy have also been successful (p. 2354-2363).
Seek prompt evaluation if
The swelling is on the floor of the mouth, especially if it enlarges. This may be a ranula, which needs specialist assessment.
It persists beyond about 2 to 3 weeks, repeatedly returns, bleeds, becomes painful, hard, ulcerated, or is associated with neck swelling, difficulty swallowing, or trouble breathing.
Do not attempt home removal or needle puncture because of infection, bleeding, scarring, and recurrence risk.
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