case_images: PMC10840517_01
case_images: Clinical manifestation: well-defined whitish, slightly firm plaque on the left side of the lower labial mucosa and subtle white striation on the right side of the lower labial mucosa.
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case_images: A subtle white striation was also seen on the right side of the lower labial mucosa (Figure 1).
case_images: Histopathological findings (hematoxylin-eosin): (A) focal atrophic epithelium with hydropic degeneration of the basal cell layer and edematous and homogenized collagen fiber in the superficial lamina propria (original magnification x100), (B) patchy, band-like lymphoplasmacytic inflammatory infiltration below the hyalinized area (original magnification x400).
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case_images: The superficial lamina propria revealed edematous and homogenized collagen fiber with patchy, band-like lymphoplasmacytic inflammatory infiltration below the hyalinized area (Figures 2A and B).
case_images: Improvement of the lesion after two months of treatment.
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case_images: After 2 months of treatment, the lesion was improved, becoming softened and decreased in size (Figure 3).