POSTER SESSION I Monday, March 24, 2003   —  9:30 AM - 12:00 Noon Exhibit Hall A - C HEAD & NECK PATHOLOGY 141 Molecular Mutational Analysis To Demonstrate That Odontogenic Keratocysts Are Neoplastic (991) NP Agaram, BM Collins, L Barnes, D Lomago, D Aldeeb, P Swalsky, S Finkelstein, JL Hunt University of Pittsburgh, Pittsburgh, PA 142 Early Neopastic Transformation of Squamous Epithelium and Underrlying Stroma of the Upper Aerodigestive Tract (UADT): A Laser Microdissection (LCM); Molecular, Immunohistochemical and Morphological Analysis (997) L Fathallah, K Kolizeras, C Butler, D Andea, F Lonardo, F Sarkar, W Sakr Harper University Hospital, Karmanos Cancer Institute and Wayne State University, Detroit, MI 143 Genotyping and Mutational Profiles of Salivary Gland Carcinosarcomas and Carcinoma Ex Pleomorphic Adenoma (1001) M Halpern, J Fowler, B Ducatman, L Barnes, P Swalsky, J Murphy, D Lomago, S Finkelstein, JL Hunt University of Pittsburgh, Pittsburgh, PA; West Virginia University, Morgantown, WV 144 Immunohistochemistry Increases the Detection of Perineural Invasion in Head and Neck Squamous Cell Carcinomas (1006) KA Kurtz, CC Lewis, RA Robinson, HT Hoffman University of Iowa, Iowa City, IA 145 Mutational Profiling of Ameloblastomas (1009) L Nodit, L Barnes, A Bakker, C Trusky, P Swalsky, E Sasatomi, S Finkelstein, JL Hunt University of Pittsburgh, Pittsburgh, PA 146 Epidermal Growth Factor Receptor, Raf-1 and Cell Proliferation and Differentiation in Mucoepidermoid Carcinoma (1013) R Ranguelov, RA Robinson, HT Hoffman University of Iowa, Iowa City, IA 147 Investigation of Oncogenic Viruses Utilizing In Situ Hybridization in Different Nasopharyngeal Carcinoma Subtypes (1017) BJ Yoder, DG Hicks, J Pettay, J Mele, M Skacel, RR Tubbs The Cleveland Clinic Foundation, Cleveland, OH