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Hypertrophic lichen planus: dusky erythema, edema, and a macerated appearance of inner vulva, transitioning to grey-pink lichenification of bilateral labia majora (A), scale crust with parakeratosis, marked irregular acanthosis, and dense infiltrate (B), H&E ×40, with basal layer degeneration at the rete tips (C), H&E ×200, and tops of papillary processes (D), H&E ×200.
