Cases
65-year-old woman with finger mass   

History and images

Our appreciation is extended to Dr. Abdul Abid, University of Texas Medical Branch, for contributing this case.

History: A 65-year-old woman presented with a painful right index finger mass. Photomicrographs were obtained.

Click the images to enlarge.

What is the most probable diagnosis?
Myopericytoma
Paraganglioma
Dermal melanocytic nevus
Glomus tumor

What immunostains can help with the diagnosis?
Cytokeratins
Neuroendocrine markers
SMA and caldesmon
S100 and desmin