History of the present illness
This is a 63-year-old white female who presented with a slightly exophytic, orange-yellow and well demarcated lesion on the right posterior and lateral border of tongue (Fig 1).  It was about 1 x 1 cm in size, of one year’s duration and asymptomatic.  The surface of this lesion was slightly corrugated to verrucoid in configuration.  The patient has a history of lichen planus on the bilateral buccal mucosa (Fig 3), mandibular (Fig 2) and maxillary vestibule, alveolar ridge and lateral tongue (Fig 1).  The patient has no history of alcohol or tobacco use.  The lesion is asymptomatic but the patient complains of chronic and generalized oral burning sensation interpreted to be due to her chronic lichen planus.