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White sponge nevus is a hereditary lesion that produces bilateral white, thick, soft, “spongy,” and folded plaques on the buccal mucosa, matching the description given; other choices present with smoother (hairy leukoplakia), necrotic/ulcerated (aspirin burn), or wipe-able pseudomembranes (candidiasis) rather than thick spongy folds [Songu, 2012(?), 22352924; Akimori, 2021, 34897171].