RESUMO
Stage migration is described in humans and dogs as a sequel of using more sensitive diagnostic methods. One hundred eighty-six dogs with multicentric lymphoma were enrolled with results of conventional staging as well as ultrasonographic and cytological examination of liver and spleen being available. The addition of splenic respective hepatic ultrasound and cytology findings resulted in slightly lower number of dogs classified as having liver and spleen involvement. In dogs with multicentric lymphoma, addition of cytology led to a significant shift of individuals from stage IV to stage III. Findings of hepatic and splenic ultrasound and cytology exerted no significant influence on complete remission and survival durations in dogs with combination chemotherapy. Staging methodology in canine lymphoma should be redefined, considering that the prognostic significance of splenic and hepatic ultrasound and cytology warrants further investigation.
Assuntos
Doenças do Cão/patologia , Fígado/patologia , Linfoma não Hodgkin/veterinária , Baço/patologia , Animais , Doenças do Cão/diagnóstico por imagem , Cães , Feminino , Imunofenotipagem/veterinária , Estimativa de Kaplan-Meier , Fígado/diagnóstico por imagem , Linfoma não Hodgkin/diagnóstico por imagem , Linfoma não Hodgkin/patologia , Masculino , Estadiamento de Neoplasias/métodos , Estadiamento de Neoplasias/veterinária , Prognóstico , Estudos Retrospectivos , Baço/diagnóstico por imagem , Sobrevida , Ultrassonografia/veterináriaRESUMO
Overexpression of high mobility group A (HMGA) genes was described as a prognostic marker in different human malignancies, but its role in canine haematopoietic malignancies was unknown so far. The objective of this study was to analyse HMGA1 and HMGA2 gene expression in lymph nodes of canine lymphoma patients. The expression of HMGA1 and HMGA2 was analysed in lymph node samples of 23 dogs with lymphoma and three control dogs using relative quantitative real-time RT-PCR. Relative quantity of HMGA1 was significantly higher in dogs with lymphoma compared with reference samples. HMGA2 expression did not differ between lymphoma and control dogs. With the exception of immunophenotype, comparison of disease parameters did not display any differences in HMGA1 and HMGA2 expression. The present findings indicate a role of HMGA genes in canine lymphoma. This study represents the basis for future veterinary and comparative studies dealing with their diagnostic, prognostic and therapeutic values.
