Influence of polyamide composite casings with silver-zinc crystals on the quality of beef and chicken sausages during their storage.

The influence of polyamide 6 composite casings with silver-zinc crystals powder on some of the physicochemicalphysical-chemical, microbiological and sensory indicators of beef and chicken sausages during their storage was evaluated. Beef and chicken sausages were elaborated by using the conventional technology for sausage meat thin pasta; in each case, it was maintained a control batch to compare changes during the storage (4 and 12 °C, 75%-85% RH). To estimate the shelf life was considered sensory evaluation as a criterion for rejection. The results were processed as failure incomplete data via the Weibull distribution and it was admitted 5% of deteriorated units. It did not find a significant effect (p ≤ 0.05) due to the addition of silver-zinc crystals on the values of pH, aw, color, texture and sensory attributes of sausages, but did influence TBARS results, with lower values compared to control products. It reduced the counts of aerobic mesophilic microorganisms and lactic acid bacteria during the storage. The shelf life of chicken sausage was not affected at any storage temperature; while for the beef sausage stored at 4 °C, its shelf life increased in 9 days, although at 12 °C did not exist difference among treatments.

Mammographic findings after breast augmentation with autologous fat injection.

BACKGROUND: Conventional film-screen mammography is a highly effective tool for the early diagnosis of breast cancer. Although the mammographic spectrum of fat necrosis has been well documented, and many postsurgical findings mimic carcinoma in clinical examination or imaging studies, the evolution of the mammographic appearance has not previously been reported in patients with a history of breast lipoinjection. OBJECTIVE: The purpose of our study was to evaluate the mammographic findings of fat necrosis in patients who had undergone breast lipoinjection and to determine whether there are any specific features that help to distinguish fat necrosis caused by fat injection from more worrisome findings. METHODS: Bilateral mammography was performed on 20 patients who had received autologous fat injection for breast augmentation between February 1999 and June 2006. The time elapsed between surgery and the postoperative mammograms ranged from 6 months to 7 years, an average of 34.5 months. The mammographic findings of fat necrosis were divided into six categories: 1, radiolucent oil cysts; 2, microcalcifications; 3, coarse calcifications; 4, focal masses; 5, spiculated areas of increased opacity; 6, negative. The Breast Imaging Reporting and Data System (BI-RADS) was used to classify the lesions in the mammograms. RESULTS: The most common mammographic findings were benign bilateral scattered microcalcifications, followed by dispersed radiolucent oil cysts in the breast tissue. Microcalcifications were found on the mammogram of one patient as early as 11 months after lipoinjection. Only 3 patients showed clustered microcalcifications on their mammograms and were classified as BI-RADS III. These patients were later available for further digital mammography and reclassified as BI-RADS II. CONCLUSIONS: Knowledge of the mammographic appearance and evolution of patterns of fat necrosis in patients who have undergone breast fat injection may enable imaging follow-up of these lesions, reducing the number of unnecessary biopsies or additional examinations and avoiding possible delays in the diagnosis of breast cancer. Because calcifications in breast parenchyma can be expected after breast fat injection, in our opinion this technique for breast augmentation should not be performed in patients with a family history of breast cancer.

Biopsia percutanea de mama / Percutaneus breast biopsy

El propósito de este artículo de revisión es dar una guía práctica de la metodología de realización de biopsias percutáneas de seno, guiadas por imágenes diagnósticas (ecografía o estereotaxia). Se discuten las indicaciones y las contraindicaciones del procedimiento, las precauciones para su realización, el equipo y las técnicas de abordaje, y se hace hincapié en las situaciones particularmente difíciles y en los problemas que se pueden presentar. Finalmente, se discuten las posibles complicaciones posteriores y se pone de relieve la importancia de llevar a cabo un análisis crítico del resultado histopatológico de la biopsia

Terapia Fibrinolítica / Evaluation of thrombolytic experience

Propósito: evaluar la experiencia trombolítica de los últimos tres años en el Departamento de Radiología del Hospital Universitario San Vicente de Paúl, como base para el planteamiento de un protocolo de terapia local y su evaluación prospectiva en un futuro trabajo. Conclusiones: basándose en la experiencia recogida en el Departamento de Radiología, se cree que la terapia trombolítica, aplicada mediante catéter intravascular, constituye una alternativa terapéutica útil en pacientes con trombosis arterial, venosa o de injertos periféricos, en quienes la cirugía no es una primera opción viable. Ellos manifiestan mejores tasas de éxito que las reportadas con el manejo anticoagulante tradicional. Esperamos en el futuro contar con protocolos que nos permitan utilizar fármacos que, como la urocinasa o el activador tisular del plasminógeno recombinante, han mostrado mayor porcentaje de éxito, en un tiempo más corto y con un menor número de complicaciones

Lesiones mamarias voluminosas: aspectos clínicos e imagenológicos / Mammary tumors

Los propósitos de este trabajo son mostrar algunas de las patologías que se manifiestan clínicamente como masas mamarias de gran volumen y crecimiento rápido, así como describir los aspectos clínicos más relevantes, las características por imágenes que ayudan al diagnóstico y los aspectos histológicos y de manejo más significativos. Estas patologías son el tumor Phyllodes, el fibroadenoma gigante y la hipertrofia mamaria del embarazo. Se ilustran los casos clínicos, los estudios imagenológicos respectivos y se revisa la bibliografía correspondiente

Fibroadenomas múltiples asociados a tratamiento con ciclosporina A / Mammary tumors associated to Cyclosporine A

Se presenta el caso de una mujer de 32 años con masas mamarias múltiples y bilaterales después de dos años de tratamiento inmunosupresor con ciclosporina A por trasplante de corazón. El estudio histológico reportó fibroadenomas múltiples bilaterales, hallazgo que ha sido reportado en la bibliografía médica como un hallazgo asociado al tratamiento con ciclosporina. No se conocen casos similares reportados en nuestro medio. Se presentan los aspectos imaginológicos y la revisión de los estudios pertinentes al tema