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      Diagnóstico histopatológico e inmunohistoquímico (IHQ) de linfoma no Hodgkin (LNH) en un canino hembra Translated title: Histopathological and immunohistochemical (IHC) diagnosis of non-Hodgkin lymphoma (LNH) in a female canine

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          Abstract

          RESUMEN Se describe el caso clínico de un paciente canino, hembra de 2 años, raza French Poodle, quien había presentado tres celos evidentes en un periodo menor a seis meses, según refiere el propietario. En la exploración clínica inicial se observó un paciente apoplético y en examen de aparato genitourinario se evidenció abundante secreción cero-sanguinolenta vaginal. El estudio ecográfico de la región inguinal revela la presencia de una estructura hiperecogénica de forma redondeada no específica con múltiples áreas oncogénicas sugestivas de piometra. Se practicó citología por punción de la masa guiada por ecógrafo que arrojó como diagnóstico presuntivo neoplasia de células redondas. Se practica laparotomía exploratoria en la que se evidenció una masa de color rojizo en el cérvix de 8 cm de diámetro y 3 cm de ancho. El estudio histopatológico de la muestra de la masa tumoral dio como diagnóstico definitivo neoplasia maligna de células grandes consistente con linfoma no Hodgkin de grado intermedio. La confrontación con biomarcadores CD3 arrojó un resultado de reactividad severa con distribución multifocal extensa. Dadas las condiciones de casuística se realizó la eutanasia. La necropsia dejó en evidencia focos metastásicos en costilla.

          Translated abstract

          ABSTRACT The clinical case of a 2-year-old female canine patient, French Poodle breed, who had presented three evident oestrous in a period of less than six months, according to the owner, is described. In the initial clinical examination, a patient with apoplexy signs was observed and in the examination of the genitourinary apparatus, abundant vaginal serobloody secretion was evident. The ultrasound study of the inguinal region reveals the presence of a non-specific rounded hyperechogenic structure with multiple oncogenic areas suggestive of pyometra. Cytology was performed by ultrasound-guided mass puncture that showed as a presumptive diagnosis of round cell neoplasia. An exploratory laparotomy is performed in which a mass of reddish colour in the cervix of 8 cm in diameter and 3 cm wide was evident. Histopathological study of the tumour mass sample gave a definitive diagnosis of malignant neoplasm of large cells consistent with intermediate grade non-Hodgkin lymphoma. The confrontation with CD3 biomarkers yielded a severe reactivity result with extensive multifocal distribution. Given the casuistic conditions, euthanasia was performed. The autopsy showed metastatic foci in the ribs.

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          Incidence, characteristics and geographical distributions of canine and human non-Hodgkin's lymphoma in the Porto region (North West Portugal).

          Lymphoma is one of the most common neoplasms in dogs and it is one of the top five causes of cancer-related deaths, similar to human lymphoma. Companion animal epidemiological studies define dogs as sentinels of potential risk factors for human health, mainly due to shared environments, shorter disease latencies, and spontaneous disease. The aims of this study were to describe human and canine epidemiologic features of non-Hodgkin's lymphoma (NHL) and their similarities, and to investigate a possible geographical association in the incidence risks in the Greater Porto area, in north-western Portugal. The postal codes of human NHL patients diagnosed between 2005 and 2010 residing in the Greater Porto, Portugal, were obtained from North and Central Region Cancer Registries of Portugal. Available data from dogs diagnosed with lymphoma between 2005 and 2016 from several veterinary centres were also collected. Descriptive epidemiology, mapping cases, and age-standardised risks of NHL incidence (ASR) were determined for both species. The results showed a higher risk (P<0.05) of NHL in men (ASR men: 18.1 cases/100,000 inhabitants; women: 14.2 cases/100,000 inhabitants) and in male dogs (ASR males: 82 cases/100,000 dogs; females: 70 cases/100,000 dogs). The geographical distribution of human and canine ASR was well correlated (r=0.664, P<0.05), with the highest values for human and canine ASR detected in the same urban municipalities of the Greater Porto: Porto, Matosinhos and Maia. These findings suggest the existence of exposure similarities, supporting the relevance of cancer surveillance in pet animals as efficient tools to predict health hazards for humans.
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            The cyclooxygenase-2/prostaglandin E2 pathway and its role in the pathogenesis of human and dog hematological malignancies

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              Linfoma de Burkitt de localización abdominal: dos casos operados en el Hospital Al-Wahdah, Maabar, Yemen

              Introducción. El linfoma de Burkitt no endémico es un tumor de frecuente localización abdominal, especialmente en niños y jóvenes. Aunque el tratamiento de elección es la quimioterapia, existe controversia sobre el papel que debe jugar la cirugía, especialmente en aquellos casos en los cuales el diagnóstico se establece durante una laparotomía exploradora. Materiales y métodos. Se presentan dos casos: una adolescente de 14 años que presentaba una masa hipogástrica y otra menor en fosa iliaca derecha de rápido crecimiento, y otro adolescente de 13 años con tumor en hipocondrio y flanco izquierdo. Se realizó resección de todo el tumor macroscópico, y se les remitió a quimioterapia. Resultados y discusión. La indicación del tratamiento quirúrgico en el linfoma de Burkitt no está claramente definida. Algunos autores no aceptan la cirugía y añaden que puede retrasar y complicar el tratamiento de quimioterapia, otros defienden la cirugía reductora de la masa tumoral asociada a la quimioterapia. Esta controversia es especialmente importante cuando el diagnóstico se establece en el curso de una laparotomía exploradora, durante la cual hay que decidir si se debe extirpar la masa tumoral o si no se debe hacer, tomando las medidas para evitar la falla renal aguda. En nuestro caso decidimos extirpar todo el tumor macroscópico. La buena evolución posoperatoria de nuestros pacientes y los resultados reportados por varios autores apoyan esta postura.
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                Author and article information

                Journal
                rivep
                Revista de Investigaciones Veterinarias del Perú
                Rev. investig. vet. Perú
                Universidad Nacional Mayor de San Marcos. Facultad de Medicina Veterinaria (Lima, , Peru )
                1609-9117
                April 2020
                : 31
                : 2
                : e17939
                Affiliations
                [1] Florencia Caquetá orgnameCentro Veterinario Sabuesos Colombia
                [2] Florencia Caquetá orgnameUniversidad de la Amazonia orgdiv1Facultad de Ciencias Agropecuarias Colombia
                Article
                S1609-91172020000200055 S1609-9117(20)03100200055
                10.15381/rivep.v31i2.17939
                77da584e-d7df-4efa-ba24-4adf58bdf618

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

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                SciELO Peru

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                Comunicaciones

                canine,CD3,female,biomarcadores,cervix,células grandes,cérvix,canino,large cells,biomarkers,hembra

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