Imaging findings in congenital Zika virus infection syndrome: an update.

BACKGROUND: Zika virus (ZIKV) is a neurotropic and neurotoxic RNA Flavivirus prompt to cause severe fetal brain dysmorphisms during pregnancy, a period of rapid and critical central nervous system development. A wide range of clinico-radiological findings of congenital ZIKV infections were reported in the literature, such as microcephaly, overlapping sutures, cortical migrational and corpus callosum abnormalities, intracranial calcifications, ventriculomegaly, brain stem and cerebellar malformations, spinal cord involvement, and joint contractures. ZIKV is also related to other severe neurological manifestations in grown-up individuals such as Guillain-Barré syndrome and encephalomyelitis. PURPOSE: Our purpose is to review the radiological central nervous system abnormalities of congenital ZIKV infection syndrome on different imaging modalities.

Avaliação da via lacrimal pelos métodos radiológicos / Evaluation of the lacrimal system by radiological methods

Os autores realizam um estudo revisional e iconográfico das vias lacrimais através dos métodos radiológicos, sendo eles a radiografia convencional, a tomografia linear, a tomografia computadorizada e a ressonância magnética. Os métodos de imagem são fundamentais para definir diagnóstico e terapia, pois, além de demonstrarem as alterações das vias lacrimais, sugerem quais os pacientes que terão melhor prognóstico com a abordagem cirúrgica. Pelo seu custo mais baixo, menor dose de radiação, baixo índice de complicações e pela informação que pode ser obtida, recomenda-se que a dacriocistografia por tomografia linear seja o método inicial de investigação.

The authors perform a revisional and iconographic study of the lacrimal system by means of radiological methods, namely, conventional radiography, linear tomography, computed tomography and magnetic resonance imaging. Image methods are essential to define diagnosis and therapy, considering that besides demonstrating alterations of the lacrimal system, they may indicate the patients with better prognosis associated with the surgical approach. Considering the lower cost, lower radiation dose, low rate of complications, and level of information that can be obtained dacryocystography by means of linear tomography is recommended as the initial investigation method.

Dissecçäo espontânea da carótida interna cervical, relato de dois casos com recanalizaçäo espontânea e revisäo bibliográfica / Spontaneous dissection of the extracranial internal carotid artery: two cases with spontaneous recanalization and a review of the literature

Säo relatados dois casos de dissecçäo espontânea da artéria carótida interna cervical. Ambos ocorreram em mulheres jovens com clínica de acidente isquêmico transitório, sem antecedentes traumáticos ou condiçöes clínicas que pudessem explicar a dissecçäo espontânea da carótida interna cervical säo discutidos