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Endgames Spot Diagnosis

A hyperpigmented intermammary patch

BMJ 2018; 361 doi: (Published 21 June 2018) Cite this as: BMJ 2018;361:k1819
  1. Xiao Ke Liu, dermatologist,,
  2. Jun Li, dermatologist
  1. Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, China
  1. Correspondence to Jun Li, lijun35{at}

A 21 year old woman presented to the dermatology department with an asymptomatic, hyperpigmented patch on the chest (fig 1). The lesion began as a single tan coloured macule that, over two years, multiplied and subsequently fused into the solitary lesion visible on presentation. On examination, the patch was well demarcated with fine scale covering it. The woman’s medical history was otherwise unremarkable. What is the most likely diagnosis?

Fig 1

Well demarcated hyperpigmented patch on the intermammary skin with fine scale


Well demarcated, hyperpigmented lesions on the chest with …

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