POSTER SESSION V Wednesday, March 10, 2004   —  9:30 AM - 12:00 Noon EXHIBIT HALL B and C HEMATOPATHOLOGY 180 The CD45 Isoform B220 Serves To Identify a Select Subset of Human B Cells and B Cell Lymphoproliferative Disorders (1123) SJ Rodig, A Shahsafaei, DM Dorfman - Brigham and Women's Hospital, Boston, MA 181 Diagnostic Utility of Aberrant CD22 Expression in Differentiating Neoplastic Cells of Small B-Cell Lymphoproliferative Disorders from Benign B-Cells in Immunophenotyping by Four-Color Multiparameter Flow Cytometry (1060) J Huang, GF Fan, Y Zhong, K Gatter, R Braziel, G Gross, A Bakke - Oregon Health and Sciences University, Portland, OR 182 TIMP-4 Expression in Non-Hodgkin Lymphoma Is Associated with Low Grade Histology and TGF b (1076) AE Kosssakowska, A Mansoor, T Alain, I Auer, J Laudder, AJ Janowska-Wieczorek, SJ Urbanski - University of Calgary / Calgary Laboratory Services, Calgary, AB, Canada; Canadian Blood Services \ University of Alberta, Edmonton, AB, Canada 183 Bone Marrow Biopsy Involvement by Non-Hodgkin's Lymphoma: Frequency of Lymphoma Types, Patterns, Blood Involvement and Discordance with Other Sites in 473 Specimens (1004) DA Arber, TI George - Stanford University Medical Center, Stanford, CA 184 Utility of Immunohistochemistry in the Evaluation of Bone Marrow Involvement by Large B-Cell Lymphoma in the Setting of Erythroid Hyperplasia (1124) FJ Rodriguez JD Hoyer, WG Morice - Mayo Clinic, Rochester, MN 185 Bone Marrow Involvement in Follicular Lymphoma: Comparison of Histology and Flow Cytometry as Staging Procedures (1129) B Schmidt, M Kremer, K John, C Peschel, H Hofler, F Fend - Technical Univ. Munich, Munich, Germany 186 Prognostic Factors Influencing Survival in Patients with B-Cell Small Lymphocytic Lymphoma (1107) M Nola, SZ Pavletic, DD Weisenburger, LM Smith, MA Bast, JM Vose, JO Armitage - School of Medicine, University of Zagreb, Zagreb, Croatia; University of Nebraska Medical Center, Omaha, NE 187 Evaluation of Phenotypic Prognostic Markers in Tissue Biopsies with B Cell Chronic Lymphocytic Leukemia/Small Lymphocytic Lymphoma: Complexities of Interpretation (1141) LA Soma, FE Craig, SH Swerdlow - University of Pittsburgh, UPMC Presbyterian Hospital, Pittsburgh, PA 188 BCL-3 Expression in B-Cell Chronic Lymphocytic Leukemia Correlates with Trisomy 12 (1128) EJ Schlette, GZ Rassidakis, O Canoz, LJ Medeiros - M.D. Anderson Cancer Center, Houston, TX 189 Zap-70 Expression in Chronic Lymphocytic Leukemia Associated with IgM Paraprotein (1164) C Yin, GZ Rassidakis, LJ Medeiros, C Bueso-Ramos, LV Abruzzo, B Handy, P Lin - MD Anderson Cancer Center, Houston, TX 190 Distinct Clonal Origin in Two Cases of Hodgkin's Lymphoma Variant of Richter's Syndrome Associated with EBV Infection (1032) L de Leval, M Vivario, B De Prijck, C Deceunick, J Zhou, J Boniver, NL Harris, P Isaacson, M-Q Du - CHU Sart-Tilman, Liege, Belgium; CHR Citadelle, Liege, Belgium; University College, London, United Kingdom; Massachusetts General Hospital, Boston, MA 191 Clonal T-Cell Populations and Increased Risk for Cytotoxic T-Cell Lymphomas in B-CLL Patients: Clinicopathological Observations and Molecular Analysis (1088) A Martinez,S Pittaluga, N Villamor, D Colomer, M Rozman, E Montserrat, M Raffeld, E Campo, ES Jaffe - NCI, Bethesda, MD; Hospital Clinic, Univ. of Barcelona, Barcelona, Spain 192 Lymphoid Nodules in Bone Marrow after Treatment for Chronic Lymphocytic Leukemia: Neoplastic or Reactive? (1113) A Padula, JR Valbuena, W Wierda, MJ Keating, S Lerner, LJ Medeiros, Y Huh - The University of Texas M. D. Anderson Cancer Center, Houston, TX 193 Circulating B-Cells That Lack Surface Immunoglobulin Light Chain Usually Represent Lymphoma/Leukemia (1140) MD Smith, TP Singleton - William Beaumont Hospital, Royal Oak, MI 194 Combined Immunohistochemical Positivity for Tartrate-Resistant Acid Phosphatase and the Antibody DBA.44 Is Infrequent in Non-Hodgkin-Lymphoma Other Than Hairy Cell Leukemia (1161) P Went, A Zimpfer, AC Pehrs, A Tzankov, S Pileri, S Mayer, S Dirnhofer - Institute of Pathology, Basel, Switzerland; Institute of Pathology, Innsbruck, Austria; Institute of Hematology and Clinical Oncology, Bologna, Italy 195 Hairy Cell Leukemia Variant: Fact or Fiction (1020) MH Cessna, L Hartung, SL Perkins, DW Bahler - University of Utah, Salt Lake City, UT 196 TIA-1 Expression in Hairy Cell Leukemia (1135) S Shimada, YI Murakami, Y Yamashita, N Mori - Nagoya University Graduate School of Medicine, Nagoya, Japan 197 T-Cell Prolymphocytic Leukemia Involving Extramedullary Sites (1154) JR Valbuena, A Padula, M Herling, D Jones, LJ Medeiros - The University of Texas M.D. Anderson Cancer Center, Houston, TX 198 BCL-2 Expression in Monocytoid B-cell Proliferation Is Not Always Indicative of Lymphoma (1134) R Sheikholeslami, R Alsabeh - Cedars-Sinai Medical Center, Los Angeles, CA 199 Splenic Marginal Zone Lymphoma. Analysis of the Expression Profile by cDNA Microarrays (1098) M Mollejo, E Ruiz, A Rodriguez, N Martinez, P Algara, J Menarguez, MS Mateo, FI Camacho, C Granda, MA Piris - Hospital Virgen de La Salud, Toledo, Spain; Centro Nacional de Investigaciones Oncologicas, Madrid, Spain 200 Unique Expression of CD 8 on Splenic Sinus Lining Cells; A Comparative Study of Sinus Lining Cells (1157) A Vijayvargiya, P Daoust - Tufts-New England Medical Center, Boston, MA 201 Stromal Changes in Reactive and Malignant Disorders of the Spleen (1109) A Orazi, DP O'Malley, JL Thomas, M Czader - Indiana University School of Medicine, Indianapolis, IN 202 Promoter Methylation of Multiple Genes in 49 Primary Gastric Lymphoma Cases (1061) Q Huang, X Su, M Li, C Fan, LM Weiss - City of Hope National Medical Center, Duarte, CA; University of Arkansas for Medical Sciences, Little Rock, AR 203 Lymphoproliferative Lesions of Lacrimal Gland (10 Years Experience). Immunohistochemical and Molecular Genetic Study (1077) M Lamba, JP Farmer, WR Lamba, DR Jordan, S Gilberg, D Sengar, BF Burns - Ottawa Hospital, Ottawa, ON, Canada; University of Ottawa Eye Institute, Ottawa, ON, Canada 204 Chromosomal Gains and Losses in MALT Lymphomas of the Salivary Gland (1167) Y Zhou, H Ye, R Hamoudi, R Siebert, S Gesk, YJ Lu, R Wang, J Shipley, PG Isaacson, A Dogan, M-Q Du - University of Cambridge, Cambridge, United Kingdom; University Hospital Schleswig-Holstein Campus Kiel, Kiel, Germany; Institute of Cancer Research, Sutton, United Kingdom; University College London, London, United Kingdom 205 Genetic Aberrations and Their Significance in Primary Intestinal MALT Lymphomas (1142) B Streubel, M Stolte, B Dragosics, M Raderer, A Chott - University of Vienna, Vienna, Vienna, Austria 206 Type and Distribution of Small and Large Intestinal Lymphomas (1110) SR Owens, WG Finn, CW Ross, B Schnitzer, R Valdez - University of Michigan, Ann Arbor, MI 207 Common Challenges in the Diagnosis of Orbital / Periocular Malt Lymphomas (1068) A Kamath, P Daoust, D Kroll, K Heher, N Laver - Tufts-New England Medical Center, Boston, MA 208 Bone Marrow Biopsy for Focal Disease Detection: Evaluation of Optimal Biopsy Length and Comparison of Bilateral to Equivalent-Length Unilateral Biopsies (1047) TI George, FL Baehner, Y Natkunam, S Geaghan, DA Arber - Stanford University Medical Center, Stanford, CA; University of California San Francisco, San Francisco, CA 209 Low Grade B-Cell Lymphomas with Plasmacytic Differentiation Lack PAX5 Gene Abnormalities (1046) TI George, JE Wrede, A Cherry, RA Warnke, DA Arber - Stanford University Medical Center, Stanford, CA 210 Lymphoproliferative Disorders Associated with Serum IgM Paraprotein Other Than LPL/WM (1055) S Hao, LJ Medeiros, C Bueso-Ramos, BC Handy, P Lin - University of Massachusetts Medical School, Worcester, MA; MD Anderson Cancer Center, Houston, TX 211 Del(6q) Is Not a Characteristic Marker of Nodal Lymphoplasmacytic Lymphoma (1029) JR Cook, NSI Aguilera, S Reshmi-Skarja, SM Gollin, X Huang, Z Yu, SL Abbondanzo, SH Swerdlow - Cleveland Clinic Foundation, Cleveland, OH; Armed Forces Institute of Pathology, Washington, DC; University of Pittsburgh Graduate School of Public Health, Pittsburgh, PA; University of Pittsburgh School of Medicine, Pittsburgh, PA