Peripheral T-cell lymphomas (PTLs) are uncommon, accounting for fewer than 10% of all non-Hodgkin lymphomas. Success in therapy of the PTLs has lagged behind that of aggressive B-cell lymphomas, and most PTLs have a poor prognosis. The molecular pathogenesis of most PTLs is also poorly understood. In the WHO classification, clinical features, in conjunction with morphological and immunophenotyp...

OBJECTIVE This study provides the clinical pathological characteristics of 1301 cases of pediatric/adolescent lymphomas in patients from different geographic regions of Brazil. METHODS A retrospective analyses of diagnosed pediatric lymphoma cases in a 10-year period was performed. We believe that it represents the largest series of pediatric lymphomas presented from Brazil. RESULTS Non-Hod...

Macrophages have been confirmed to play a significant role in the behavior of human lymphomas, albeit no consistent data are so far available canine lymphomas. The present study characterizes macrophages cases nodal lymphoma and their relationship with histological grade immunophenotype. Samples from lymph nodes 25 dogs diagnosed were selected. Immunohistochemistry was used determine tumor immu...

T-cell lymphomas are a diverse group of rare non-Hodgkin lymphomas. The variety of T-cell lymphomas can be grouped into 2 broad clinical categories: the usually aggressive systemic T-cell lymphomas can be included under the term peripheral T-cell lymphoma (PTCL), and the usually indolent T-cell lymphomas presenting in the skin can be included under the term cutaneous T-cell lymphoma (CTCL). Cha...

Primary testicular lymphomas display mostly aggressive diffuse large cell B-cell lymphomas, which could be further subclassified into germinal center B-cell-like and an activated B-cell phenotype via immunohistochemistry. A retrospective analysis of primary testicular lymphomas diagnosed at the Institute of Pathology, Salzburger Landeskliniken (SALK) between January 1997 and December 2008 was d...