The underlying lamina propria exhibited area of dense fibrous hyperplasia with chronic inflammatory cell infiltrate with increased vascularity.
In our case, despite the atypical appearance, a presumptive differential was limited by the history of the lesion to a fibrous hyperplasia. We, however, advise vigilance in the need for histopathologic evaluation and proper referral when required.
de Souza Andrade, "Focal fibrous hyperplasia: a review of 193 cases," Journal of Oral & Maxillofacial Pathology, vol.