A case of mucinous urothelial-type adenocarcinoma of the prostate in a 68-year-old man is reported. This is a rare neoplasm which probably originates from the proximal prostatic ducts or the prostatic urethra. This tumor does not express prostate-specific antigen, in contrast to the more common mucinous adenocarcinoma of the prostate, and may be misdiagnosed as a secondary, mainly colorectal, tumor. Clinical examinations and immunohistochemistry may help in the differential diagnosis. Owing to local recurrences two transurethral resections of the prostate were performed in our patient during 3 years of follow-up. He died from this tumor 40 months after the first biopsy.
informació n del artí culo Material y métodos: Se realizó una revisió n de los tumores testiculares, encontrando 7 casos de quistes epidermoides. Dentro de la valoració n preoperatoria se realizó ecografía escrotal y resonancia magné tica en 6 y en 4 pacientes, respectivamente. En 4 casos se realizó tambié n biopsia intraoperatoria.Resultados: Se encontró una imagen típica ecográ fica en má s del 80 y en el 50% de las resonancias. En las biopsias intraoperatorias realizadas se encontró un 100% de coincidencia con el diagnó stico definitivo de la pieza.Se tomó una conducta conservadora (orquiectomía parcial o tumorectomía) en 6 de los 7 casos (85%), con buena evolució n.Conclusió n: En los pacientes en que se tiene alta sospecha ecográ fica de quiste epidermoide, las características macroscó picas típicas (tumor encapsulado, pequeñ o tamañ o, amarillo nacarado y de fá cil enucleació n) y un examen con cortes por congelació n en el intraoperatorio que confirme el diagnó stico permiten realizar una cirugía conservadora.
A granuloma caused by a forgotten laparotomy gauze (gauzoma) was suspected in a patient with general symptoms, a well-defined pararenal mass on computed tomography and a history of retroperitoneal surgery, and was subsequently confirmed at surgery. The image diagnosis of retained surgical sponges is briefly reviewed.
The High Energy cosmic-Radiation Detection (HERD) facility has been proposed as a space astronomy payload onboard the future China's Space Station. HERD is planned for operation starting around 2027 for about 10 years In addition to the unprecedented sensitivity for dark matter searches and cosmic-ray measurements up to the knee energy, it should perform gammaray monitoring and full sky survey from few hundred MeV up to tens of TeV. We present the first study of the HERD gamma-ray performance obtained with full simulations of the whole detector geometry. HERD will be a cubic detector composed with 5 active faces. We present a study conducted inside the HERD analysis software package, which includes a detailed description of the detector materials. In this work we present the HERD effective area, the point spread function and the resulting gamma-ray sensitivity.
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