Parietal (16.5%), frontal (15.2%), and frontoparietal (10.1%) locations were most commonly involved followed by occipitoparietal (6.3%), fronto-occipital (3.8%), cerebellar (2.5%), temporal (2.5%), and occipital (2.5%) locations.
(51, 53) As a base for these disorders, a decrease in blood flow in the occipitoparietal visual association area was detected in PD patients without dementia.
The cortical visual system is known to be segregated into two anatomically and functionally distinct pathways: a ventral occipitotemporal pathway that subserves object perception and a dorsal occipitoparietal pathway that subserves object localization and visually guided action [29-31].
Clinically, infants with DP most often present with ipsilateral frontal bossing, ipsilateral occipitoparietal flattening, contralateral occipital bossing, and ipsilateral displacement of the ear anteriorly.
The first system expands from the area 17 (primary-visual cortex) over the dorsal visual route towards the areas of the upper temporal lobe and the parietal lobe (occipitoparietal projection system).
The patient's medical situation progressively worsened and follow-up CT scan of the brain revealed development of new hypodensities noted in the right posterior occipitoparietal, left occipital, and bilateral frontal regions.