A 62-year-old female reports an annoying bump on the inside of her cheek with no associated pain. Based on the most common etiology of such lesions, what is the most likely origin?

The most common soft-tissue oral lesions (traumatic fibroma, pyogenic granuloma, peripheral giant cell granuloma, and peripheral ossifying fibroma) are all reactive in nature — they occur in response to chronic irritation, trauma, or local inflammatory stimuli. In an asymptomatic middle-aged female, a smooth buccal mucosa nodule is overwhelmingly likely to be a reactive (hyperplastic) lesion rather than a true neoplasm. Reactive lesions do not have malignant potential and are treated by excision and elimination of the irritating factor.