We report a case of frontal encephalocele, unusual presentation of neural duct defects, diagnosed by at 31 weeks of gestation. We describe the ultrasound characteristics of encephalocele (extracranial mass, ventricles dilatation, and cranial defect) and consider some entíties that can simulate ímages of frontal encephalocele for differential diagnosis, such as, optic glioma, hemangioma, teratoma. Other studíes were performed to determine associated malformatiorís, that in this case were negative.

In the last few years, thanks to high resolution lateral transducers advanced technology, harmonic imaging, color Doppler, panoramic vision, ultrasound contrast enhancement, three-dimension, breast ultrasound has become the most important imaging test complementary to mammography on breast lesions evaluation and in many cases (dense breasts, age below 35, and pregnancy) is the first line test with higher sensitivity and specificity. An updated review is performed on ultrasound findings of malignant and benign lesions and breast cancer, the bi-rads ultrasound classification (breast imaging reporting and data system), Doppler color, third-dimension (3D), lymph node metastasis, ultrasound screening approach and breast lesions with ultrasound guide.

We report a case of frontal encephalocele, unusual presentation of neural duct defects, diagnosed by at 31 weeks of gestation. We describe the ultrasound characteristics of encephalocele (extracranial mass, ventricles dilatation, and cranial defect) and consider some entíties that can simulate ímages of frontal encephalocele for differential diagnosis, such as, optic glioma, hemangioma, teratoma. Other studíes were performed to determine associated malformatiorís, that in this case were negative.

In the last few years, thanks to high resolution lateral transducers advanced technology, harmonic imaging, color Doppler, panoramic vision, ultrasound contrast enhancement, three-dimension, breast ultrasound has become the most important imaging test complementary to mammography on breast lesions evaluation and in many cases (dense breasts, age below 35, and pregnancy) is the first line test with higher sensitivity and specificity. An updated review is performed on ultrasound findings of malignant and benign lesions and breast cancer, the bi-rads ultrasound classification (breast imaging reporting and data system), Doppler color, third-dimension (3D), lymph node metastasis, ultrasound screening approach and breast lesions with ultrasound guide.

Objetivos: Determinar los hallazgos tomográficos pulmonares asociados a severidad y mortalidad en pacientes con la COVID-19 del Hospital Nacional Edgardo Rebagliati Martins (HNERM), y proponer puntos de corte para una puntuación tomográfica de severidad (PTS). Materiales y métodos: Estudio de cohorte retrospectivo en 254 pacientes con la COVID-19 que contaban con tomografía de tórax clasificada según severidad clínica. Se realizó un análisis multivariado mediante regresión logística para determinar asociación con la severidad clínica, un análisis de regresión de Cox para evaluar mortalidad, y curvas ROC para evaluar la PTS. Resultados: Los hallazgos tomográficos asociados a severidad clínica fueron el patrón difuso de las lesiones (OR: 3,23, IC 95%: 1,46-7,14), patrón en «empedrado» (OR: 2,48; IC 95%: 1,08-5,68) y mayor valor en la PTS (OR: 1,73; IC 95%: 1,49-2,02)....