POSTER SESSION I Monday, February 28, 2005   —  9:30 AM - 12:00 Noon Convention Center, Exhibit Hall B HEAD & NECK PATHOLOGY 130 Allelic Loss of Three Different Tumor Suppressor Gene Loci in Benign and Malignant Endothelial Tumors of the Head and Neck (985) A Domfeh, M Fichera, JL Hunt - University of Pittsburgh, Pittsburgh, PA 131 FHIT (Fragile Histidine Triad Gene): Microsatellite Instability, Loss of Heterozygosity and Decreased Protein Expression in Oral Squamous Carcinoma (990) LA Guerin, RA Robinson - University of Iowa, Iowa City, IA 132 p16INK: A New Marker To Identify Papillary Squamous Cell Carcinomas of the Head and Neck (991) R Hari, JL Hunt - University of Pittsburgh, Pittsburgh, PA 133 Decreased Immunohistochemical Expression of E-Cadherin but Not ß-Catenin Is Associated with Increased Risk of Vascular Invasion and Decreased Survival in Head and Neck Squamous Cell Carcinomas (995) KA Kurtz, RA Robinson - University of Iowa, Iowa City, IA 134 Does HPV Infect Glands in Biphasic Papillomatous Lesions of the Bronchus (Bronchial Adenoma Papilliferum, BAP), Salivary Gland (Sialadenoma Papilliferum, SAP), and Skin (Syringocystadenoma Papilliferum, SCP)? (996) E Lavrovskaya, S McGuff, R Reddick, J Jagirdar - University of Texas Health Science Center, San Antonio, TX 135 Absence of p16 Gene (CDKN2A) Deletions in HNSCC Occurring in Young Adults (1005) EM O'Regan, OM Sheils, NC Murphy, M Ring, ME Toner, SP Finn, PC Smyth, S Cahill, JJ O'Leary - Dublin Dental School and Hospital, Dublin, Ireland; University of Dublin Trinity College, Dublin, Ireland; Coombe Womens Hospital, Dublin, Ireland 136 Molecular and Immunophenotypic Comparison of Respiratory Epithelial Adenomatoid Hamartoma, Sinonasal Adenocarcinoma, and Chronic Sinusitis (1007) JA Ozolek, EL Barnes, JL Hunt - University of Pittsburgh, Pittsburgh, PA 137 Papillary Thyroid Carcinoma Versus Follicular Adenoma: Molecular Diagnosis by Cumulative Analysis of Gene Expression Ratios (1012) T Scognamiglio, J Kao, TJ Fahey 3rd, Y-T Chen - Weill Medical College of Cornell University, New York, NY