POSTER SESSION I Stowell-Orbison/Surgical Pathology/Autopsy Awards Poster Monday, March 19, 2012   —  9:30 AM - 12:00 Noon CC Exhibit Hall B3 & C Click on the blue numbers in parentheses to display abstracts. Click the button next to any title to add to Itinerary Planner... BONE & SOFT TISSUE PATHOLOGY Poster# Title and Authors Itinerary Planner 8 Is Routine Histopathologic Examination of Femoral Heads Justified? A 10-Year Review of Clinicopathologic Discrepancies in Elective Hip Arthroplasty Specimens at Two Institutions (23) KB Brown, L Rezeanu, NY Ishaq, AS Brown, EF DiCarlo, MJ Klein - The University of Mississippi Medical Center, Jackson, MS; Weill Cornell Medical College, New York, NY; Hospital for Special Surgery, New York, NY Add 9 Loss of Heterozygosity, but Not Microsatellite Instability, Is Present in Sporadic Dedifferentiated Liposarcoma: A Study of 46 Genetically Confirmed Cases (31) JL Davis, AE Horvai - UCSF, San Francisco, CA Add 10 Clinicopathological and Prognostic Significance of Akt-mTOR and MAPK Pathways and Antitumor Effect of mTOR Inhibitor in Malignant Peripheral Nerve Sheath Tumor (39) M Endo, N Setsu, Y Takahashi, T Ishii, K Kohashi, H Yamamoto, S Tamiya, S Matsuda, Y Iwamoto, M Hakozaki, H Iwasaki, Y Oda - Kyushu University, Fukuoka, Japan; Fukushima Medical University School of Medicine, Fukushima, Japan; Fukuoka University, Fukuoka, Japan Add 11 Clinical Utility of MYH9/USP6 Fusion Transcript Detection and USP6 Expression in Nodular Fasciitis (65) NR Patel, EG Demicco, AM Major, W-L Wang, AJ Lazar, D Lopez-Terrada - Baylor College of Medicine/Texas Children´s Hospital, Houston, TX; The University of Texas M.D. Anderson Cancer Center, Houston, TX Add 12 SOX11 Is a Marker for Myxoid/Round Cell Liposarcoma (48) KJ Jones, ND Riddle, JS Brooks, J-H Huang - Pennsylvania Hospital, Philadelphia, PA Add 13 Liposarcoma of the Mediastinum and Thorax- 22 Cases in an Uncommon Location with Diverse and Unusual Histology (21) JM Boland, TV Colby, AL Folpe - Mayo Clinic, Rochester, MN; Mayo Clinic, Scottsdale, AZ Add 14 Comprehensive Analysis of Cathepsin K Expression in Human Neoplasms (85) G Zheng, G Martignoni, C Antonescu, E Montgomery, C Eberhart, G Netto, J Taube, W Westra, J Epstein, T Lotan, A Maitra, E Gabrielson, M Torbenson, C Iacobuzio-Donahue, A Demarzo, IM Shih, P Illei, D Clark, TC Wu, P Argani - Johns Hopkins Hospital, Baltimore, MD; University of Verona, Verona, Italy; Memorial Sloan-Kettering Cancer, New York Add