Immunophenotypic classification of canine malignant lymphoma in formalin-fixed, paraffin wax-embedded specimens using CD3 and CD79a cell markers

Inconsistent use of nomenclature in different canine malignant lymphoma (CML)classification systems, which lead to incorrect diagnosis and prognosis, necessitated a retrospective study of 103 cases of CML. Histological classification was done according to the Working Formulation, on H&E sections, after standard processing. Immunophenotyping, using CD3 (T cell) and CD79a (8cell) markers, was carried out on the same sections. Intermediate grade lymphomas were the largest category (49.5%), with 16.5%high grade lymphomas. More than half (53.3%) of the lymphomas were of 8 cell immuno phenotype, and 36.5% were T cell lymphomas. Only 9.7% of the total number of lymphomas exhibited double negative staining. Only two categories, the immunoblastic and medium-sized macro nucleolated (MMC) category (Fournel-Fleury et al.). exhibited constant (8 cell) immunophenotype. All the other categories exhibited mixed immunophenotype. The Working Formulation, with omission of the follicular tyoes (due to the rarity thereof in CML) and addition of the MMC category and immunophenotyping, is best for classifying CML.

Grantor dc:publisher

University of Pretoria

Year dc:date.issued

2007

Advisor dc:contributor.advisor

• Nesbit, J.W.

• Lymphocytes classification
• Immunophenotyping
• Lymphomas
• Dogs
• UCTD

Statement dc:rights

• © 1999, University of Pretoria. All rights reserved. The copyright in this work vests in the University of Pretoria. No part of this work may be reproduced or transmitted in any form or by any means, without the prior written permission of the University of Pretoria

Dc Identifier Other

H266/th

OAI identifier oai:identifier

oai:repository.up.ac.za:2263/29493