5 cm (<1%) Postnatal cranial imaging Serpiginous calcifications, R; polymicrogyriccortex, BL; simplified gyral
pattern (BL, L >R) Ocular evaluation Unremarkable Auditory evaluation Unremarkable Characteristic Case-infant 2 Country of exposure Venezuela Gestational age at time [approximately equal to]12 of symptoms wk (2015 Dec) Laboratory results for Zika virus Mother Serum neg rRT-PCR, pos IgM (2016 Apr) Infant Serum/CSF/CB neg rRT-PCR, pos IgM (2016 Jun) Antenatal ultrasound HC 10%, BPD 34% (36.
Characteristic findings in the brain and spinal cord include thin cerebral cortices with enlarged ventricles and increased extra-axial fluid collections, intracranial calcifications particularly between the cortex and subcortex, abnormal gyral
patterns, absent or hypoplastic corpus callosum, hypoplasia of the cerebellum or cerebellar vermis, and hypoplasia of the ventral cord (8-10).
On the basis of MR scans, more or less symmetrical hyperintense cortical and subcortical white matter lesions occur on T2-weighted images with gyral
and/or leptomeningeal contrast enhancement.
19,59) Ultrasound and/or autopsy may reveal widespread brain calcifications (periventricular, cerebral parenchyma, thalami, and basal ganglia), cortical thinning with ventricular dilation, simplified gyral
patterns (eg, lissencephaly, pachygyria, agyria), and cerebellar hypoplasia.
MRI brain revealed subtle gyral
hyperintensity on diffusion images in the high frontal lobe, possibly seizure related gyral
oedema or meningoencephalitis.
In addition, of the 8 infants with magnetic resonance imaging (MRI) studies, 7 (88%) had an enlarged cisterna magna, 7 (88%) had delayed myelination, 6 (75%) had a simplified gyral
pattern, and 3 (38%) had hypoplasia of corpus callosum.
The possible anatomical locations for its occurrence with a similar incidence are the brain parenchyma, appearing as a focal hematoma or petechial gyral
bleeding, or the subarachnoid space [43,44].
The earliest sign of venous infarct is gyral
swelling, which is often extremely subtle and only appreciable by noticing the effacement of the adjacent sulci (Figure 3).
An automated labeling system for subdividing the human cerebral cortex on MRI scans into gyral
based regions of interest," NeuroImage, vol.
Using sulcal and gyral
measures of brain structure to investigate benefits of an active lifestyle.
Characteristic imaging findings of the cerebral atrophy with gyral
or curvilinear calcification (typically described as tram track), enhancing angiomas and ipsilateral enlarged choroid plexus readily differentiate it from RE.
3 (+) regions Case 4 Gyral
PSWCs Normal (AY) hyperintensity microscopic and extending to biochemical both cerebral findings, hemispheres 14.