Clinical Quiz
The Hong Kong Practitioner VOLUME 29 / July 2007

A woman presenting with a nodule over her left ankle
Po-tak Chan ³¯Ä_¼w


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 6 August, 2007. Each reader is allowed to submit one entry only. The name of the winner and the answer will be published in the August issue.

Clinical history:

A 56-year old lady presented with a nodular growth over her left ankle for two years. There was no history of trauma. The nodule was not painful. There was no contact bleeding. Its size remained static and she was treated by cryotherapy twice without clinical response.
The slide and the question were prepared by:
Dr Po-tak Chan,
MRCP(UK), FHKCP, FHKAM(Med)
Medical Officer,
Social Hygiene Service, PHSB, DH.

What is the most likely diagnosis?

A. Common wart
B. Irritated seborrhoeic keratosis
C. Eccrine poroma
D. Pyogenic granuloma

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