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Answers to Dermatophile
  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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From questions on page 171.

ANSWER TO Question 1

The answer is (B), nevus spilus. This lesion is characteristic of a nevus spilus, also known as speckled lentiginous nevus. Typically, nevus spilus presents as a tan-brown patch with superimposed brown nevi that develop over time. It is found in 1.7/1000 newborns, with boys and girls being equally affected. Parents often give a history of noticing the macular component at birth or shortly thereafter, with the gradual appearance of more and more individual nevi within the area. This lesion is …

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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.