[Acquired paraneoplastic hemophilia secondary to Vater's ampulla adenocarcinoma]. / Hemofilia paraneoplásica adquirida secundaria a adenocarcinoma de la ampolla de Vater.

Acquired hemophilia A is an unusual bleeding disorder of autoimmune origin resulting in the formation of autoantibodies directed against coagulation factor VIII. These autoantibodies can act by partially or completely neutralizing the activation or function of the factor, or they can also accelerate its elimination from the circulation. The global incidence of the disease is 1.5 cases per million inhabitants per year. In nearly 50% of cases, an underlying disease that is presumed responsible to produce autoantibodies can be detected. We report a case with acquired hemophilia A, in a patient with Vater's ampulla adenocarcinoma.

La hemofilia adquirida A es un desorden hemorrágico inusual de origen autoinmune que resulta en la formación de autoanticuerpos dirigidos contra el factor VIII de la coagulación. Estos autoanticuerpos pueden actuar neutralizando parcial o completamente la activación o función del factor, o también pueden acelerar su eliminación de la circulación. La incidencia mundial de la enfermedad es de 1.5 casos por millón de habitantes por año. En cerca del 50% de los pacientes se puede detectar una enfermedad subyacente que se presume responsable de la producción de los autoanticuerpos. Se presenta el caso de un varón con hemofilia adquirida A, en contexto de adenocarcinoma de la ampolla de Vater.

[Febrile agranulocytosis and reactive arthropathy associated with cocaine consumption in an HLA B27 positive patient]. / Agranulocitosis febril y artropatía reactiva asociada a consumo de cocaína en un paciente HLA B27 positivo.

Agranulocytosis associated with cocaine use is a phenomenon linked to the presence of levamisole, an anthelminthic and immunomodulating agent, used as an adulterant to cocaine. This reaction has been associated with the presence of HLA B27. In addition to agranulocytosis, people who use levamisole-adulterated cocaine may develop fever, skin lesions, arthralgias, and less frequently, inflammatory enthesitis and arthritis. We present the case of a cocaine-consuming patient with HLA B27 genotype, who developed febrile agranulocytosis and inflammatory arthropathy. The presence of p ANCA, atypical ANCA and MPO was detected in blood, and other causes of agranulocytosis were excluded. He was treated with corticosteroids and later methotrexate, therapy for addiction, with good evolution.

La agranulocitosis asociada al consumo de cocaína es un fenómeno vinculado a la presencia de levamisol, un agente antihelmíntico e inmunomodulador, usado como adulterante de la cocaína. Esta reacción puede presentarse con mayor frecuencia en personas con HLA B27. Además de la agranulocitosis, las personas que consumen cocaína adulterada con levamisol pueden desarrollar fiebre, lesiones en piel, artralgias y, menos frecuentemente, artritis y entesitis inflamatoria. Presentamos el caso de un paciente consumidor de cocaína, con genotipo HLA B27, que desarrolló agranulocitosis febril y artropatía reactiva. En sangre se detectó la presencia de ANCA p, ANCA atípico y MPO, y fueron excluidas otras causas de agranulocitosis. Fue tratado con corticoides y posteriormente metotrexato, terapia de deshabituación, con buena evolución.

Haploidentical transplant in adult patients with acute lymphoblastic leukemia in Argentina: a comparison with matched related and unrelated donors.

We aimed at analyzing the outcome of allogeneic stem cell transplant (ASCT) in adult patients with acute lymphoblastic leukemia (ALL), comparing Haploidentical (Haplo) with HLA-matched (sibling and unrelated) donors. Between 2008 and 2017, we collected data from 236 patients (median age 31 years; range 16-64; 90% HCT-CI 0-1) who underwent unmanipulated ASCT in first complete remission and subsequent remissions in 15 Argentinian centers. Donors were HLA-matched (n = 175; 74%) and Haplo (n = 61; 26%). Two-year overall survival (OS) was 55% (95% CI 47-63) for the HLA-matched group and 49% (95% CI 34-62) for the Haplo group (p = 0.351). For OS, crude HR, adjusted HR for covariates (HR 1.24; 95% CI 0.77-1.99; p = 0.363) and HR including a propensity score in the model (HR 1.22; 95% CI 0.71-2.08; p = 0.414) showed no impact of donor category on the OS. No difference was found in terms of nonrelapse mortality, relapse, leukemia-free survival, and grade 3-4 acute graft-versus-host disease (GVHD); 2-year incidence of chronic GVHD was higher in HLA-matched vs Haplo group (p = 0.028). Patients with ALL who underwent ASCT were young subjects with low HCT-CI. In this setting, a Haplo donor represents an alternative widely available in the absence of an HLA-matched donor. Relapse remains a challenge for all donor categories.

Hemofilia paraneoplásica adquirida secundaria a adenocarcinoma de la ampolla de Vater / Acquired paraneoplastic hemophilia secondary to Vater's ampulla adenocarcinoma

Resumen La hemofilia adquirida A es un desorden hemorrágico inusual de origen autoinmune que resulta en la formación de autoanticuerpos dirigidos contra el factor VIII de la coagulación. Estos autoanticuer pos pueden actuar neutralizando parcial o completamente la activación o función del factor, o también pueden acelerar su eliminación de la circulación. La incidencia mundial de la enfermedad es de 1.5 casos por millón de habitantes por año. En cerca del 50% de los pacientes se puede detectar una enfermedad subyacente que se presume responsable de la producción de los autoanticuerpos. Se presenta el caso de un varón con hemofilia adquirida A, en contexto de adenocarcinoma de la ampolla de Vater.

Abstract Acquired hemophilia A is an unusual bleeding disorder of autoimmune origin resulting in the formation of autoantibodies directed against coagulation factor VIII. These autoantibodies can act by partially or completely neutralizing the activation or function of the factor, or they can also accelerate its elimination from the circulation. The global incidence of the disease is 1.5 cases per million inhabitants per year. In nearly 50% of cases, an underlying disease that is presumed responsible to produce autoantibodies can be detected. We report a case with acquired hemophilia A, in a patient with Vater's ampulla adenocarcinoma.

Agranulocitosis febril y artropatía reactiva asociada a consumo de cocaína en un paciente HLA B27 positivo / Febrile agranulocytosis and reactive arthropathy associated with cocaine consumption in an HLA B27 positive patient

Resumen La agranulocitosis asociada al consumo de cocaína es un fenómeno vinculado a la presencia de levamisol, un agente antihelmíntico e inmunomodulador, usado como adulterante de la cocaína. Esta reacción puede presentarse con mayor frecuencia en personas con HLA B27. Además de la agranulocitosis, las personas que consumen cocaína adulterada con levamisol pueden desarrollar fiebre, lesiones en piel, artralgias y, menos frecuentemente, artritis y entesitis inflamatoria. Presentamos el caso de un paciente consumidor de cocaína, con genotipo HLA B27, que desarrolló agranulocitosis febril y artropatía reactiva. En sangre se detectó la presencia de ANCA p, ANCA atípico y MPO, y fueron excluidas otras causas de agranulocitosis. Fue tratado con corticoides y posteriormente metotrexato, terapia de deshabituación, con buena evolución.

Abstract Agranulocytosis associated with cocaine use is a phenomenon linked to the presence of levamisole, an anthelminthic and immunomodulating agent, used as an adulterant to cocaine. This reaction has been associated with the presence of HLA B27. In addition to agranulocytosis, people who use levamisole-adulterated cocaine may develop fever, skin lesions, arthralgias, and less frequently, inflammatory enthesitis and arthritis. We present the case of a cocaine-consuming patient with HLA B27 genotype, who developed febrile agranulocytosis and inflammatory arthropathy. The presence of p ANCA, atypical ANCA and MPO was detected in blood, and other causes of agranulocytosis were excluded. He was treated with corticosteroids and later methotrexate, therapy for addiction, with good evolution.