case_images: PMC3938371_01
case_images: Dark coloured papule measuring 9 mm on upper right back
case_images: abd-89-01-0160-g01.jpg
case_images: PMC3938371_01_abd-89-01-0160-g01.jpg
case_images: f01
case_images: A 38-year-old woman presented a dark coloured papule at physical examination measuring 9 mm on the upper right back (Figure 1).
case_images: (Delta 20 dermatoscope): Asymmetric shape, many colours, comedo-like opening (fine
  black arrow), milia-like cyst (thick black arrow), bluish veil (thick red arrow),
  and granulation (thin red arrow)
case_images: abd-89-01-0160-g02.jpg
case_images: PMC3938371_01_abd-89-01-0160-g02.jpg
case_images: f02
case_images: Dermoscopy revealed asymmetrical shape, comedo-like openings, milia-like cysts, bluish veil, and granulation (Figure 2).
case_images: Presence of hyperkeratosis, horny pseudocysts and melanophages in the dermis, and
  discrete perivascular lymphocytic infiltrate (HE 100X)
case_images: abd-89-01-0160-g03.jpg
case_images: PMC3938371_01_abd-89-01-0160-g03.jpg
case_images: f03
case_images: From this description the conclusion was seborrheic keratosis associated with dysplastic nevus (Figures 3 e 4).
case_images: Presence of fusion of nests along the sides of rete ridges, concentric
  fibroplasia, atypical melanocytes, melanophages in the dermis, and proliferated
  basaloid cells (HE 400X)
case_images: abd-89-01-0160-g04.jpg
case_images: PMC3938371_01_abd-89-01-0160-g04.jpg
case_images: f04
case_images: From this description the conclusion was seborrheic keratosis associated with dysplastic nevus (Figures 3 e 4).