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Brown birthmarks
  1. Peter A Lio1,2,
  2. Kachiu C Lee3
  1. 1Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
  2. 2Department of Pediatrics, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
  3. 3Department of Dermatology, Brown University, Providence, Rhode Island, USA
  1. Correspondence to Dr Peter A Lio, 1455 North Milwaukee Avenue, 2nd Floor, Chicago, IL 60622, USA; p-lio{at}

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Answers to the following quiz questions can be found on page 200.

Select one best answer from the following:

  1. Neurofibromatosis type 1

  2. Nevus spilus

  3. McCune–Albright syndrome

  4. Café-au-lait macule

  5. Multiple lentigenes syndrome (LEOPARD)

  6. Nevus of Ito (nevus fuscoceruleus acromiodeltoideus)

  7. Giant congenital melanocytic nevus

  8. Carney syndrome

Question 1

Case 1: A 5-year-old boy presents with a birthmark in his right axilla (figure 1). His mother states that she first noticed a faint brown birthmark in that area when he was an infant. However, she is concerned because more …

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  • Contributors KCL was involved in drafting the manuscript, and PAL revised and supervised the manuscript.

  • Competing interests None.

  • Provenance and peer review Commissioned; externally peer reviewed.