title: [Reactive lymphadenopathy-enlargement-pseudolymphoma--prelymphoma].
abstract: In this first of two articles on reactive and lymphomatous lymph-node enlargement, based several own cases an overview of reactive lymphadenopathies is given. A short presentation of the subpopulations of the lymphatic system and its function is followed by tables and case reports illustrating the individual reaction forms. The include abnormal storage, inflammatory and infctious processes, immunological disorders and hamartomatous lesionsl. Certain reactive disease entities which clinically and pathologically closely resemble lymphomas are designated as pseudolymphomas. Prelymphomas include those processes which in part may lead to a malignant lymphoma. Finally, practical aspects of lymphode diagnostics (localization factor, clinical-pathological correlation) are discussed.
mesh_terms: D000328:Adult; D000368:Aged; D001402:B-Lymphocytes / Q000276:immunology; D002675:Child, Preschool; D005260:Female; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology / Q000503:physiopathology; D008199:Lymphadenitis / Q000473:pathology*; D008223:Lymphoma / Q000473:pathology; D008297:Male; D011230:Precancerous Conditions / Q000473:pathology; D013601:T-Lymphocytes / Q000276:immunology
vernacular_title: Reaktive Lymphknoten-Vergrösserung--Pseudolymphom--Prälymphom.