case_images: PMC5437445_01
case_images: Clinical image showing a reticulated white plaque on the lower lip.
case_images: cde-0009-0131-g01.jpg
case_images: PMC5437445_01_cde-0009-0131-g01.jpg
case_images: F1
case_images: An irregular reticulated white plaque was present on her lower lip (Fig. 1).
case_images: Photomicrograph of the lip biopsy showing a lichenoid lymphocytic infiltrate with interface vacuolar change and focal subepithelial blistering. HE. Original magnification x100.
case_images: cde-0009-0131-g02.jpg
case_images: PMC5437445_01_cde-0009-0131-g02.jpg
case_images: F2
case_images: 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).