Presence of preserved reactive germinal centers in follicular lymphoma is a strong histopathologic indicator of limited disease stage

• Published in: The American journal of surgical pathology Vol. 29; no. 12; p. 1661
• Main Authors: Adam, Patrick, Katzenberger, Tiemo, Eifert, Miriam, Ott, M Michaela, Rosenwald, Andreas, Müller-Hermelink, Hans Konrad, Ott, German
• Format: Journal Article
• Language: English
• Published: United States 01.12.2005
• Subjects: Adult; Aged; Aged, 80 and over; Biomarkers, Tumor - metabolism; Biopsy; Chromosomes, Human, Pair 14; Chromosomes, Human, Pair 18; Diagnosis, Differential; Female; Germinal Center - metabolism; Germinal Center - pathology; Histocytochemistry; Hodgkin Disease - diagnosis; Hodgkin Disease - genetics; Hodgkin Disease - metabolism; Hodgkin Disease - pathology; Humans; Immunoglobulin G - metabolism; Immunohistochemistry; In Situ Hybridization, Fluorescence; Lymph Nodes - pathology; Lymphoma, Follicular - diagnosis; Lymphoma, Follicular - genetics; Lymphoma, Follicular - metabolism; Lymphoma, Follicular - pathology; Male; Middle Aged; Neoplasm Staging - statistics & numerical data; Proto-Oncogene Proteins c-bcl-2 - metabolism; Retrospective Studies; Translocation, Genetic
• ISSN: 0147-5185
• DOI: 10.1097/01.pas.0000173233.29741.38

Follicular lymphoma (FL) typically presents as a systemic disease (stages III/IV). We repeatedly observed in cases with conserved reactive follicle structures (so-called partial infiltration) an association with a limited clinical stage (I/II). In this study, we analyzed 53 lymph node biopsies of FL with conserved reactive follicle structures. In 44 cases (83%) of the patients with partial infiltration, a limited stage of disease (Ann Arbor stage I/II) was found, whereas only 9 of 53 cases (17%) suffered from a systemic disease. In those cases with at least one follicle totally spared by lymphoma, 95% of the patients (38 of 40 cases) presented with a limited stage (I/II) of disease, compared with only 20% (10 of 49 cases) in a control group with full-blown infiltration (P < 0.001). Analyzing systematically all 321 FL cases sent to the Reference Center Würzburg in the year 2001, reactive follicle remnants were detected in 34 of 321 (10.6%) cases with 26 of 34 (76%) tumors showing limited stage (I/II) disease, including all 18 cases with at least one totally spared follicle. Our results therefore show a clear association between the occurrence of preserved reactive follicles in FL and limited disease stage.