Microscopic examination of the HLA-DR and CD68 (DakoCytomation, Glostrup, Denmark) immunostains did not show any significant differences in the distribution and cellularity of macrophages or in activated microglial cells throughout the telencephalon and were almost absent inside the encephalomalacic pseudocyst of the right occipital lobe
Bartynski and Boardman  suggested the presence of focal or confluent vasogenic edema in the "posterior" parietal or occipital lobe
region as well as in additional regions that are most commonly involved such as the frontal lobes, inferior temporal-occipital region, and cerebellum.
The MR imaging findings of heroin-induced toxic leukoencephalopathy in our patient are lesser known, with predominant involvement of the frontoparietal lobes rather than the posterior limb internal capsules, occipital lobes
, cerebellum or brainstem.
27,28] We used the average CPL of the inter-hemispheric path lengths to assess the level of overall inter-network integration (termed LInter-H) between the left and right hemispheres and also assessed the level of inter-subnetwork integration between the left and right frontal lobes (LInter-F), temporal lobes (LInter-T), parietal lobes (LInter-P), occipital lobes
(LInter-O), and subcortical structures (LInter-S).
Comparing patients with PCA to patients with more typical memory-led AD, those with PCA have greater atrophy of the parietal and occipital lobes
, while people with typical AD have greater atrophy of the temporal lobes and hippocampi.
We will look first at the linguistic role of the cerebellum in light of the literature and that of the thalamus and some described clinical syndromes and finally briefly at two specific syndromes resulting from occipital lobe
lesions, all of which are supported by the posterior system.
Imaging studies in these patients have shown bilateral symmetrical vasogenic oedema in occipital lobes
and often extending into cortical surface and follow-up imaging studies in the next 24-48 hours have confirmed complete resolution of oedema.
18]F]T807 binding in the entorhinal cortex in cognitively typical older adults, and MCI and Alzheimer's patients showed significantly greater binding in the neocortical regions, particularly in the temporal and occipital lobes
That's a region that facilitates communication among the parietal, temporal and occipital lobes
Patterns of changes in our set up were typical including white matter oedema mostly localized to the parieto occipital lobes
in all the seven cases however in two patients they have extensive involvement of frontal lobes and basal ganglia also none of the lesion took up the gadolinium contrast when administered, on repeat follow up scan in 3 patients there was complete resolution of changes.
Until the late 1800s, vision was attributed entirely to the eyes when it was suggested that the occipital lobes
and the eyes together were responsible for seeing.
Functional brain imaging has shown that in the occipital lobes
of people with migraine aura, changes in blood flow spread at the same rate.
The anterior portions of the frontal lobes, olfactory tracts and the occipital lobes
are usually normal.
ACT scan of the child's head showed extensive hypodensities in the posterior frontal lobes, parietal lobes, posterior temporal and occipital lobes
bilaterally, and the basal ganglia bilaterally.
In most cases, computed tomography scan revealed typical, symmetrical contrast enhancement in both occipital lobes
Nevertheless, transient cortical blindness can be seen after coronary angiography without contrast enhancement at computed tomography scan.