A Case of Intravascular Papillary Endothelial Hyperplasia that Hardened, Became Painful and Changed Ultrasonically after a Physical Stimulus

Abstract

A 55-year-old woman first noticed a subcutaneous nodule with a diameter of 1 cm on the right sole of her foot a year earlier. It became hard and painful after massage. Ultrasonography revealed a low echoic mass with posterior echo enhancement that changed into a somewhat higher echoic mass with little posterior echo enhancement after massage. Histological examination revealed an intravascular papillary endothelial hyperplasia. Such a change in ultrasonography findings before and after massage has not been previously reported.