Traumatic Neuroma — MFDS Part 1 MCQ

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ModerateOral PathologyTraumatic NeuromaMFDS Part 1

A patient develops a small, pressure-sensitive oral nodule several months after surgery that may have transected a peripheral nerve. At which site would an oral traumatic (amputation) neuroma be most characteristically encountered?

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Correct answer: C — Mental nerve region adjacent to the mental foramen

The correct answer is C. A traumatic neuroma is a reactive, non-neoplastic proliferation of regenerating axons, Schwann cells and connective tissue following peripheral nerve injury or transection. In the mouth, the mental nerve region near the mental foramen is a classic site, particularly after mandibular surgery or other local trauma. Lesions may present months later as a small nodule with tenderness, burning or pain elicited by pressure, although some are asymptomatic. The tongue and lower lip are also recognised sites, but the unspecified tongue tip is less characteristic than the mental nerve region in this option set. Palatal traumatic neuromas have been reported but are distinctly rare. The buccal mucosa and floor of the mouth are not typical principal sites.

Reference: Eguchi T et al. A diffuse traumatic neuroma in the palate: a case report. Diagnostic Pathology. 2016. https://pubmed.ncbi.nlm.nih.gov/27165640/