POSTER SESSION I Monday, February 13, 2006   —  9:30 AM - 12:00 Noon Exhibit Level ENDOCRINE PATHOLOGY 59 Precursor Lesions In Patients With Multiple Endocrine Neoplasia Type 1-Associated Duodenal Gastrinomas (410) M Anlauf, A Perren, CL Meyer, S Schmid, P Saremaslani, ML Kruse, E Weihe, P Komminoth, PU Heitz, G Kloppel - University of Kiel, Kiel, Germany; University of Zurich, Zurich, Switzerland; University of Marburg, Marburg, Germany 60 Cytokeratin CK20 Is A Sensitive Marker For The Cytoskeletal Changes Associated With Hypercortisolism In The Pituitary Corticotroph Cell (418) J Eschbacher, S Coons - St Joseph's Hospital and Medical Center, Phoenix, AZ 61 SELDI-TOFMass Spectrometry Analysis Of Normal, Benign And Malignant Thyroid Tissue (420) SE Fischer, EP Diamandis, S Ezzat, SL Asa - University Health Network and University of Toronto, Mount Sinai Hospital and University of Toronto, Toronto, ON, Canada 62 A Multi-Modality Approach To The Treatment Of Primary Hyperparathyroidism (423) JR Grau, DL Fraker, VA LiVolsi - University of Pennsylvania Medical Center, Philadelphia, PA 63 Expression Of BRAFWT And BRAFV600e: Its Significance In Tumorigesis Of Thyroid Carcinomas (426) T Kondo, S Murata, R Katoh, S Ezzat, SL Asa - University Health Network and University of Toronto, Mount Sinai Hospital and University of Toronto, Toronto, ON, Canada; University of Yamanashi, Tamaho, Yamanashi, Japan 64 Immunohistochemical Analysis of Hurthle Cell Neoplasms of the Thyroid: A Hierarchical Clustering Approach (433) KP Patel, M Esposito, K Heller, TA Bhuiya - Long Island Jewish Medical Center, New Hyde Park, NY 65 Immunohistochemical Detection Of XIAP In Thyroid Lesions And Disorders (449) GQ Xiao, PD Unger, G Li, DE Burstein - Mount Sinai School of Medicine, New York, NY