History: This sample is from a thigh mass that arose in a 25 year old man. What is your diagnosis?
Answer: Low grade fibromyxoid sarcoma.
Comment: These tumors used to be confused with fibromatoses, but with modern immunohistochemistry, they are easily detected. Two classic references and a more recent one are provided.
This case was provided Dr. Elizabeth Montgomery, Professor of Pathology and Vice Chair of Anatomic Pathology at the University of Miami, and Editor-In-Chief of the Pathology Survival Guides at Innovative Science Press. You can check out her GI and Soft Tissue books as well as our other titles at: