Interactive Case Study - December 2017

An Asymptomatic Mass on the Wrist of a 44-year-old Female

Allen G. Strickler, MD, PhD; George Lin, MD, PhD

A 44-year-old female presented with an enlarging but otherwise asymptomatic 2.5 cm mass on her right dorsal wrist that had been present for approximately one year. Attempted aspiration of the mass failed to yield fluid.

Click this image to view the virtual slide

Figure 1. 4x

Figure 2. 20x

Figure 3.60x

What is the best diagnosis?

A.	Extraskeletal myxoid chondrosarcoma

B.	Myoepithelial tumor

C.	Low grade myxofibrosarcoma

D.	Reticular perineurioma

E.	Low grade fibromyxoid sarcoma