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  • Title: [Unusual location of mucous extravasation cyst: report of two cases].
    Author: Martinelli-Kläy CP, Lombardi T.
    Journal: Rev Stomatol Chir Maxillofac; 2012 Nov; 113(5):375-7. PubMed ID: 22789629.
    Abstract:
    INTRODUCTION: The most common location of mucous extravasation cyst is the lower lip followed by buccal mucosa and ventral surface of the tongue. It very rarely occurs on the upper lip. OBSERVATION: A 17-year-old man consulted for a firm sub-mucosal nodule of the upper lip. The nodule was removed and the histological examination identified a pseudocyst characterized by a mucus pool without any epithelial lining, surrounded by granulation tissue. A similar observation was made in a 58-year-old woman who consulted for a recurrent translucent vesicle of the upper lip. There was no recurrence in either case. DISCUSSION: The clinical presentation of mucous extravasation cysts of the upper lip is similar to that of others lesions especially salivary gland or connective tissue tumors, or sometimes traumatic fibroma. Histological examination is mandatory to prove a definitive diagnosis and rule out a neoplasm requiring a more aggressive treatment.
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