A firm asymptomatic lump measuring 1 ´ 1 cm was discovered in the mandibular gingiva of a 32-year-old woman. The mass was well defined, firm, and the same color as the surrounding tissue. Which of the following would be most likely?

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The most likely diagnosis in this case is a peripheral fibroma. This is a common type of gingival mass that is firm, well-defined, and asymptomatic. Granular cell tumor and salivary gland tumors would be more likely to present with pain or other symptoms, and necrotizing sialometaplasia typically presents with an ulcerated lesion. Pyogenic granuloma is also a possibility, but these lesions are typically more vascular and may bleed easily upon palpation.

A Firm Asymptomatic Lump Measuring 1 ´ 1 Cm Was