Table of Content


Winter 2015, Vol. 23 No. 4

Hong Kong J. Dermatol. Venereol. (2015) 23, 211-212

Dermato-venereological Quiz

Dermato-venereological Quiz

KK Jong 莊國坤and ECY Chu 朱灼欣

A middle-aged woman presented with some grey-blue macules over her abdomen and back. The macules were of variable size and shape (Figure 1). The lesions were neither itchy nor tender. She had enjoyed good past health and was not on any chronic medications. A skin biopsy was done over the abdomen (Figures 2 & 3).

Figure 1 Multiple grey-blue macules over the abdomen.

Figure 2 Small lymphocytes at the dermoepidermal junction.

Figure 3 Prominent melanophages in the upper dermis.


  1. What is the differential diagnosis?
  2. What are the histology findings?
  3. What is the diagnosis?
  4. What is the treatment?
  5. What is the prognosis of the condition?