Gregory Scott Stacy MD, Abstract Co-Author: Nothing to Disclose

Lekshmi D. Nair MD, Presenter: Nothing to Disclose

1) To make the viewer aware of the category of epithelioid-cell tumors, emphasizing clinical and pathologic similarities among the different tumors within this category2) To discuss the specific imaging features of these tumors

Soft tissue sarcomas are generally classified based on histogenesis and/or cytomorphologic features of the tumor. Several tumors that remain undefined with regard to differentiation by the World Health Organization demonstrate an epithelioid cell pattern pathologically and hence can be grouped accordingly. Such tumors include, but are not limited to, synovial sarcoma, epithelioid sarcoma, alveolar soft part sarcoma, clear cell sarcoma, and granular cell tumor. Many of these tumors tend to occur in younger patients than the more common malignant fibrous histiocytoma or liposarcoma, and many exhibit regional lymph node spread - an uncommon trait of most soft tissue sarcomas. Radiologists should be aware of this group of neoplasms, especially when encountering a soft tissue mass in a young adult. This presentation will address the demographic and imaging features (with emphasis on magnetic resonance imaging) of these epithelioid-cell neoplasms.

Stacy, G, Nair, L, Imaging Features of Epithelioid-Cell Soft Tissue Tumors.  Radiological Society of North America 2004 Scientific Assembly and Annual Meeting, November 28 - December 3, 2004 ,Chicago IL. http://archive.rsna.org/2004/4412286.html