Podiatric Dermatology Quiz: What Is Your Diagnosis Of This Lesion?

Tracey Vlahovic DPM

Can you identify the lesion in the photo on the left?

This lesion is a benign fibrohistiocytic tumor that occurs most commonly on the lower extremities of females. They range in size between 0.3 cm to over 1.0 cm and are usually dome-shaped in appearance although some manifest depression beneath the skin surface. Often, lateral palpation will result in increased depression or invagination of the lesion. This is referred to as the “dimple” sign.

Which of the following is your diagnosis?

a) Eccrine poroma
b) Glomus tumor
c) Blue nevus
d) Dysplastic nevus
e) Dermatofibroma

Please leave your answer in the comment section below. I will share the answer in the next couple of days on Facebook and Twitter, and at the end of my next blog.

Editor’s note: This blog is adapted from the handbook, Skin Disease Of The Lower Extremities: A Photographic Guide, from Tracey Vlahovic, DPM, and Stephen M. Schleicher, MD. The book is now available for purchase at www.lowerextremityderm.com . The e-book version is now available for purchase at http://tinyurl.com/7itt66v , http://tinyurl.com/7j44vez and http://tinyurl.com/couepf5 .


I knew what it was before the obvious buzzword "dimple" sign was given but great case nonetheless!


Dimple sign is the key!



Add new comment