TY - JOUR A1 - de Vreeze, Ronald S. A. A1 - Coevorden, Frits van A1 - Boerrigter, Lucie A1 - Nederlof, Petra M. A1 - Haas, Rick L. A1 - Bras, Johannes A1 - Rosenwald, Andreas A1 - Mentzel, Thomas A1 - de Jong, Daphne T1 - Delineation of Chondroid Lipoma: An Immunohistochemical and Molecular Biological Analysis JF - Sarcoma N2 - Aims Chondroid lipoma (CL) is a benign tumor that mimics a variety of soft tissue tumors and is characterized by translocation (11;16). Here, we analyze CL and its histological mimics. Methods CL ( ) was compared to a variety of histological mimics ( ) for morphological aspects and immunohistochemical features including cyclinD1(CCND1). Using FISH analysis, CCND1 and FUS were investigated as potential translocation partners. Results All CLs were strongly positive for CCND1. One of 4 myoepitheliomas, CCND1, was positive. In well-differentiated lipomatous tumors and in chondrosarcomas, CCND1 was frequently expressed, but all myxoid liposarcomas were negative. FISH analysis did not give support for direct involvement of CCND1 and FUS as translocation partners. Conclusions Chondroid lipoma is extremely rare and has several and more prevalent histological mimics. The differential diagnosis of chondroid lipomas can be unraveled using immunohistochemical and molecular support. KW - Lipom Y1 - 2011 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:20-opus-135103 VL - 2011 IS - Article ID 638403 ER -