A 24-year-old patient presents with a persistent firm asymptomatic submucosal mass (1 ´ 1 cm) in her lower lip. The mass fluctuates in size and occasionally drains a cloudy, sticky fluid. This would most likely be which of the following?

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The presentation of a persistent submucosal mass in the lower lip that fluctuates in size and occasionally drains a cloudy, sticky fluid is consistent with a mucous extravasation phenomenon. This lesion is caused by trauma to minor salivary glands, leading to the leakage of mucin into surrounding tissues and the formation of a soft, fluctuant mass. The lesion may have a bluish tint and is typically asymptomatic, although it may become painful if it becomes inflamed or infected. Treatment of mucous extravasation phenomenon typically involves surgical excision if the lesion becomes symptomatic or cosmetically bothersome.

A 24-Year-Old Patient Presents with a Persistent Firm Asymptomatic Submucosal