The aims of this study were to assess the prognostic significance of bone marrow (BM) infiltration in canine large B cell lymphoma (LBCL) and to establish cut-off values for designating the BM as infiltrated by lymphoid blasts. The degree of BM infiltration by large CD21 positive cells in dogs with LBCL was assessed by flow cytometry (FC) and related to time to progression (TTP) and lymphoma-specific survival (LSS). Forty-six dogs were prospectively enrolled, staged and treated with a dose-intense chemotherapeutic protocol. BM infiltration was directly correlated with peripheral blood infiltration (P=0.001), high lactate dehydrogenase activity (P=0.0024) and substage b disease (P<0.001). In the univariate analysis, there was a significant association between BM infiltration diagnosed by FC and both TTP (P=0.001) and LSS (P<0.001). Substage was the only factor associated with TTP in the multivariate analysis (P=0.002), whereas substage (P<0.001) and anaemia (P=0.008) were associated with LSS. A cut-off of 3% BM infiltration had the strongest prognostic value, since it discriminated between dogs with a poorer prognosis (median TTP 69days; median LSS 155days) and dogs with a better prognosis (median TTP 149days; median LSS 322days). BM analysis is an essential step in the staging of LBCL. The presence of BM infiltration by FC at diagnosis is a negative prognostic indicator in canine LBCL.
Assessment of bone marrow infiltration diagnosed by flow cytometry in canine large B cell lymphoma : prognostic significance and proposal of a cut-off value / L. Marconato, V. Martini, L. Aresu, M. Sampaolo, F. Valentini, V. Rinaldi, S. Comazzi. - In: THE VETERINARY JOURNAL. - ISSN 1090-0233. - 197:3(2013 Sep), pp. 776-781.
|Titolo:||Assessment of bone marrow infiltration diagnosed by flow cytometry in canine large B cell lymphoma : prognostic significance and proposal of a cut-off value|
MARTINI, VALERIA (Secondo)
COMAZZI, STEFANO (Ultimo)
|Parole Chiave:||Bone marrow; Canine; Flow cytometry; Large B cell lymphoma; Prognosis|
|Settore Scientifico Disciplinare:||Settore VET/03 - Patologia Generale e Anatomia Patologica Veterinaria|
Settore VET/08 - Clinica Medica Veterinaria
|Data di pubblicazione:||set-2013|
|Digital Object Identifier (DOI):||http://dx.doi.org/10.1016/j.tvjl.2013.05.003|
|Appare nelle tipologie:||01 - Articolo su periodico|