case_images: PMC5726670_01
case_images: Pigmented lesion on the lateral aspect of the left arm
case_images: abd-92-05-s1-0030-g01.jpg
case_images: PMC5726670_01_abd-92-05-s1-0030-g01.jpg
case_images: f1
case_images: A 15-year-old female patient presented to us with a pigmented lesion on the lateral aspect of the left arm for 1 year, slowly enlarging and itchy over the past 2 months (Figure 1).
case_images: Close up of pigmented lesion on the left arm with satellite lesions
case_images: abd-92-05-s1-0030-g02.jpg
case_images: PMC5726670_01_abd-92-05-s1-0030-g02.jpg
case_images: f2
case_images: Dermatological examination revealed a brown-blue irregular, well defined macule, with approximately 8 mm, with black-brown dots on the periphery (Figure 2).
case_images: Dermoscopy: blue-gray in a homogenous pattern, with peripheral streaks
  and satellite lesions
case_images: abd-92-05-s1-0030-g03.jpg
case_images: PMC5726670_01_abd-92-05-s1-0030-g03.jpg
case_images: f3
case_images: On dermoscopy, there was a black-brown lesion, in a homogenous pattern, composed of structureless areas and with streaks in the periphery and satellite gray-blue lesions (Figure 3).
case_images: Central lesion showing strongly pigmented melanocytes amid dense fibrous
  stroma and melanophages (Hematoxylin & eosin, X40)
case_images: abd-92-05-s1-0030-g04.jpg
case_images: PMC5726670_01_abd-92-05-s1-0030-g04.jpg
case_images: f4
case_images: Histopathology revealed spindle-shaped and dendritic, strongly pigmented melanocytes, amid dense fibrous stroma and melanophages, predominantly occupying upper and mid dermis (Figure 4).
case_images: Satellite lesions composed by melanocytes similar to the central lesion,
  located close to the vessels in the dermis (black arrows) (Hematoxylin
  & eosin, panoramic: X100; in set: X400)
case_images: abd-92-05-s1-0030-g05.jpg
case_images: PMC5726670_01_abd-92-05-s1-0030-g05.jpg
case_images: f5
case_images: Satellite lesions were seen in the adjacent skin, constituted by melanocytes similar to the central lesion, forming small aggregates located close to the dermal vessels (Figure 5).