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(A) Histologic findings after treatment of a solar lentigo with the 730 nm picosecond laser (2 mm spot, 4 J/cm2). (B) Histologic findings after treatment of a solar lentigo with the nanosecond 755 nm laser (3 mm spot, 7 J/cm2). (C) Histologic findings after treatment of a solar lentigo with the 532 nm picosecond laser (4 mm spot, 1.2 J/cm2). (D) Histologic findings after treatment of a solar lentigo with the nanosecond 532 nm laser (3 mm spot, 1.8 J/cm2)
