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Disseminated superficial actinic porokeratosis of the posterior aspect of the lower portion of the left leg. Posterior aspect of the lower portion of the left leg (A) at presentation, (B) at 3 month follow-up, and (C) at 6 month follow-up with application of topical tretinoin 0.025% cream with calcipotriene 0.005% cream every other night.
