August 1st 2005
This 14-year-old girl had first noticed the well-circumscribed, roughened, irregular growth on her right middle finger 6 months earlier. The lesion had progressively enlarged. The girl's mother had a similar, but smaller, lesion on the left elbow. Alexander K. C. Leung, MD, and Justine H. S. Fong, MD, of Calgary, Alberta, diagnosed verruca vulgaris. This proliferative, hyperkeratotic, exophytic lesion is most commonly caused by human papillomavirus types 2 and 4.