El linfoma difuso de células B grandes (LDCBG) positivo al VEB, no especificado de otra manera (NOS) es un subtipo de linfoma agresivo poco común asociado con un peor pronóstico en los ancianos. Se ha informado DLBCL positivo para EBV en <5% de los pacientes occidentales sin inmunodeficiencia predisponente documentada. Existen muchos trastornos linfoproliferativos asociados con la infección por VEB, como granulomatosis linfomatoide, linfoma plasmablástico, LDCBG asociado con inflamación crónica, úlcera mucocutánea positiva para VEB, linfoma de derrame primario y linfoma de Hodgkin clásico. El LDCBG EBV-positivo, NOS es un diagnóstico de exclusión y se requiere una correlación clínico-patológica para diferenciar entre estos diagnósticos diferenciales. Los pacientes con enfermedad inflamatoria intestinal (EII) que reciben medicamentos inmunosupresores tienen un mayor riesgo...

Disease overview Epstein Barr virus‐positive (EBV+) diffuse large B‐cell lymphoma (DLBCL), not otherwise specified (NOS) is an entity included in the 2016 WHO classification of lymphoid neoplasms. EBV+ DLBCL, NOS, is an aggressive B‐cell lymphoma associated with chronic EBV infection, and a poor prognosis with standard chemotherapeutic approaches. Diagnosis The diagnosis is made through a careful pathological evaluation. Detection of EBV‐encoded RNA is considered standard for diagnosis; however, a clear cutoff for positivity has not been defined. The differential diagnosis includes plasmablastic lymphoma, DLBCL associated with chronic inflammation, primary effusion lymphoma, HHV8+ DLBCL, NOS, and EBV+ mucocutaneuos ulcer. Risk‐stratification The International prognostic index (IPI) and the Oyama score can be used for risk‐stratification. The Oyama score includes age >70 years...

En presente artículo hace un análisis de la relación relación neutrófilos-linfocitos en pacientes con linfoma periférico de células T agresivo en estadio temprano, donce se incluyeron pacientes con diagnóstico de PTCL.

Peripheral T cell lymphoma (PTCL) is rare in the United States and Europe, accounting for about 10% of all lymphoma cases. In Latin America, PTCL accounts for about 15–20% of all lymphoma cases (Laurini et al, 2012). Aggressive subtypes of PTCL carry a poor prognosis with a 5‐year overall survival (OS) of approximately 30%, and include unspecified (PTCLU), anaplastic large cell lymphoma (ALCL) and angioimmunoblastic lymphoma, among others (Vose et al, 2008). The International Prognostic Index (IPI) and the Prognostic Index for PTCLU (PIT) scoring systems are powerful risk‐stratification tools that have been validated in patients with aggressive PTCL. The prognosis of aggressive PTCL patients is, however, heterogeneous and further refinement of prognostic tools is needed. The neutrophil‐lymphocyte ratio (NLR) has been shown to be prognostic in patients with a variety of haematolog...