POSTER SESSION I Monday, March 08, 2004   —  9:30 AM - 12:00 Noon Exhibit Hall B and C ENDOCRINE PATHOLOGY 60 Array Comparative Genomic Hybridization Analysis of g-Irradiated Human Thyrocytes (424) SP Finn, P Smyth, EM O'Regan, R Flavin, JJ O'Leary, OM Sheils - University of Dublin, Trinity College, Dublin, Ireland 61 Immunohistochemical Expression of Cyclooxygenase-2 (COX-2) in Follicular Carcinomas of the Thyroid (428) DM Haynik, RA Prayson - Cleveland Clinic Foundation, Cleveland, OH 62 Diagnostic Value of CDX-2 and TTF-1 Expressions in Separating Metastatic Neuroendocrine Neoplasms of Unknown Origin (435) X Lin, T Luckasevic, JF Silverman, D Medich, RJ Keenan, MT Tung, YL Liu - Allegheny General Hospital, Pittsburgh, PA