Clinical Case Report: Oral Mucocele (Mucous Extravasation Cyst)

AbstractBackground: Oral mucocele (mucous extravasation cyst) is a common benign lesion of minor salivary glands, usually on the lower lip, caused by ductal rupture and mucin spillage. It appears as a translucent bluish nodule, most often in young adults. Diagnosis is clinical; imaging (ultrasound/MRI) can exclude deep extension or other pathology.Case: A healthy adult male with a 1 cm painless, bluish swelling on the right lower lip, present for 2 months after minor trauma. Clinical differential diagnoses included mucocele, fibroma, lipoma, and salivary neoplasm. The lesion was excised under local anaesthesia with removal of adjacent minor salivary glands.Investigations: Histopathology showed a cystic cavity filled with mucin and lined by granulation tissue (no epithelium), confirming an extravasation mucocele.Outcome: Healing was uneventful; at 3 months follow-up there was no recurrence.Conclusion: Mucocele management ranges from observation to surgery. Excision with gland removal is definitive and safe, with low recurrence. A patient’s informed consent was obtained. This report follows CARE guidelines for case reports.