Reticular cGVHD of the (A) tongue dorsum and (B) ventrolateral tongue demonstrating typical hyperkeratotic striations and plaque-like changes. More extensive involvement with heavy reticulation and associated ulcerations of the (C) ventral tongue and (D) tongue dorsum, with various degrees of erythema. There is prominent involvement of the lips in panel D, which stops abruptly at the vermillion border.