Clinical Quiz
The Hong Kong Practitioner VOLUME 28 / December 2006

A man presenting with a persistent popular rash on his legs
Kuen-kong Lo ¿c°®­è


A monthly clinical quiz is published in The Hong Kong Practitioner. Readers are invited to participate and a prize draw, sponsored by Pfizer Corporation Hong Kong Limited, will be undertaken among the successful entries each month. For entry into the draw, simply answer the question, fill in the reply slip and return it to the College by 29 January, 2006. Each reader is allowed to submit one entry only. The name of the winner and the answer will be published in the January issue.

Clinical history:

A 63-year old farmer complained of persistent ugly and itchy rash at legs for the past ten years. He had tried various topical therapies to the lesions with minimal improvement. On examination, there were multiple tiny brownish hyperkeratotic papular eruptions at the anterior shin of both legs. It was rough and firm on palpation and resembled the surface of the litchi (¯ïªK) skin. There were no other abnormalities including the mucous membrane. He enjoyed good health all along and had no major illness.

The slide and the question were prepared by:
Dr Kuen-kong Lo, FRCP (Edin, Glas), FHKCP, FHKAM(Med)
Consultant Dermatologist-in-Charge,
Social Hygiene Service, PHSB, CHP, DH.

What is the most likely diagnosis?

A. Angiokeratoma
B. Lichen amyloidosus
C. Lichen planus
D. Lichen simplex chronicus

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