PROFFERED PAPERS Monday, March 24   —  8:00 AM   —  Marriott Salon 3 Click on the numbers in parentheses to display abstracts. Section C - GYNECOLOGIC PATHOLOGY Chaired by: Marissa Nucci and Bradley Quade 8:00 Serous Tumors of Low Malignant Potential: Stanford Update (908) T Longacre, H Tazelaar, R Kempson, M Hendrickson Stanford University, Stanford, CA 8:15 Mutations in BRAF and KRAS Characterize the Development of Low-Grade Ovarian Serous Carcinoma (962) G Singer, R Oldt, Y Cohen, BG Wang, D Sidransky, RJ Kurman, I-M Shih The Johns Hopkins Medical Institutions, Baltimore, MD 8:30 Distinction between Serous Borderline Tumors and Serous Carcinomas Based on mRNA Expression Profiling (865) B Gilks, B Vanderhyden, S Zhu, M van de Rijn, T Longacre Vancouver General Hospital and University of British Columbia, Vancouver, BC; University of Ottawa and Ottawa Regional Cancer Centre, Ottawa, ON; Stanford University, Stanford, CA 8:45 Clinicopathologic Analysis of Early Stage Sporadic Ovarian Carcinoma Treated at a Single Institution (895) MM Leitao, Jr, J Boyd, A Hummer, N Olvera, CD Arroyo, E Venkatraman, R Baergen, D Dizon, RR Barakat, RA Soslow Memorial Sloan-Kettering Cancer Center, New York, NY; New York Presbyterian Hospital-Weill Medical College of Cornell University, New York, NY 9:00 Serous Carcinoma of the Ovary, Fallopian Tube or Peritoneum with Initial Presentation as a Lymph Node Metastasis (859) ED Euscher, E Elishaev, EG Silva, MT Deavers, DM Gershenson, A Malpica The University of Texas MD Anderson Cancer Center, Houston, TX 9:15 The Challenge in Distinguishing Metastatic Ovarian and Pancreatobiliary Carcinomas in the Abdomen and the Morphologic Criteria for Their Distinction (819) R Ali-Fehmi, E Silva, W Sakr, D Lucas, M Che, J Dey, V Adsay Harper University Hospital; The Karmanos Cancer Institute; Wayne State University, Detroit, MI; M.D. Anderson Cancer Center, Houston, TX 9:30 RECESS, EXHIBITS, POSTER SESSION I 11:00 Dating the Endometrial Biopsy: A Re-Evaluation (986) R Zaino, D Novotney, K Ireland, W Meyer, M Fritz, B Lessey, M Murray, Penn State U, Hershey, PA; Wilmington Path. Assoc., Wilmington, NC; Path. Assoc., Spokane, WA; U North Carolina, Chapel Hill, NC; Permanente Medical Group, Sacramento, CA 11:15 Cellular Leiomyoma: A Genetically Distinct Entity among Benign Uterine Tumors (852) P Dal Cin, N Christacos, CC Morton, BJ Quade Brigham and Women's Hospital & Harvard Medical School, Boston, MA 11:30 Unique Cytogenetic Profile in So-Called Benign Metastasizing Leiomyoma: Evidence of a Distinct Clinicopathologic Entity (922) MR Nucci, P Dal Cin, R Drapkin, CDM Fletcher, JA Fletcher Brigham and Womens Hospital, Boston, MA 11:45 Uterine Epithelioid Leiomyosarcomas with Clear Cells or Malignant PEComas? (961) EG Silva, MT Deavers, D Bodurka, A Malpica M. D. Anderson Cancer Center, Houston, TX