History of the present illness

This is a 15-year-old boy who presented with a painful non-healing ulcer on the left lateral border of tongue (Figure 1). The ulcer was surrounded by a white plaque. The right buccal mucosa also had a white lesion which had a reticular pattern (Figure 2). The right buccal mucosa lesion was not ulcerated and was not painful. The left buccal mucosa had a hint of a white reticular lesion but was not as prominent as that of the right side. The ulcer was of one month’s duration while the right buccal mucosa lesion was of unknown duration. An incisional biopsy of the lateral tongue was performed.

Figure 1 This clinical photograph of the left lateral border of tongue was taken at presentation. Note the surface ulceration surrounded by a rim of white plaque.