%0 Journal Article %T Dedifferentiated Liposarcoma of the Retroperitoneum with Extensive Leiomyosarcomatous Differentiation and ¦Â-Human Chorionic Gonadotropin Production %A Michael J. Russell %A Frederick L. Flynt %A Allyson L. Harroff %A Oluwole Fadare %J Sarcoma %D 2008 %I Hindawi Publishing Corporation %R 10.1155/2008/658090 %U http://dx.doi.org/10.1155/2008/658090