34.9 MB (3.1 MB compressed)
4288 x 2848 pixels
36.3 x 24.1 cm ⏐ 14.3 x 9.5 in (300dpi)
DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
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Becker's naevus on the back of an 18 year old male. This benign condition is caused by an overproduction of melanin (skin pigment) and hypertrichosis (excessive hair growth). It is most common in males soon after puberty.
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