A 16-year-old boy presented with a hyperpigmented patch over his left
chest since puberty
Dr. Adrian KC Cheng
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Clinical history:
A 16-year-old boy presented with a hyperpigmented patch over his left chest since puberty. Examination showed a brownish patch to thin plaque with irregular borders and mild hypertrichosis over his left upper chest. There were also a few superimposed acneiform papules. Dermoscopy showed a well-defined pigment network with uniform thickness of lines and perifollicular hypopigmentation.
What is the diagnosis?
| A. | Becker melanosis |
| B. | Congenital melanocytic nevus |
| C. | McCune-Albright syndrome |
| D. | Neurofibromatosis |
The slide and the question were prepared by:
Dr. Adrian KC Cheng, MBBS(HK), MRCP(UK), MSc GEOR (CUHK), FHKCP, FHKAM (Medicine)
Specialist in Dermatology & Venereology;
Associate Consultant,