More info:
http://www.eplasty.com/index.php?option=com_content&view=article&id=244&catid=145&Itemid=121
http://pixshark.com/glomus-tumor-nail.htm
http://www.eatonhand.com/img/img00090.htm
http://radsource.us/fingertip-lesions/
https://ispub.com/IJHS/3/2/13750
http://en.wikipedia.org/wiki/Glomus_tumor
