PMC5437445_01
Clinical image showing a reticulated white plaque on the lower lip.
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PMC5437445_01_cde-0009-0131-g01.jpg
F1
An irregular reticulated white plaque was present on her lower lip (Fig. 1).
Photomicrograph of the lip biopsy showing a lichenoid lymphocytic infiltrate with interface vacuolar change and focal subepithelial blistering. HE. Original magnification x100.
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PMC5437445_01_cde-0009-0131-g02.jpg
F2
This revealed erosion of squamous epithelium with subepidermal clefting, interface vacuolar change, and a subadjacent band of lymphocytes, some plasma cells, and histiocytes (Fig. 2).