Post-contrast images demonstrated linear enhancement surrounding pericallosal
arteries consistent with vasculitis.
Dawson fingers (Figure 4) involving pericallosal
areas perpendicular to corpus callosum were seen in 3 cases.
artery constitutes the medial border of the resection, while working at the knee of the corpus callosum.
Near the superior frontal gyrus, these arteries anastomose with branches from the pericallosal
artery of the anterior cerebral artery.
Magnetic resonance imaging of the brain revealed periventricular and pericallosal
hyperintense lesions that were typical of MS (Figure 1, 2).
Recently, study has demonstrated a significant increase of cortical IL-1[beta] as early as 1 h after the beginning of reperfusion, the cytokine being mainly expressed in cortical neurons and pericallosal
astroglial cells .
region as well as the quadrigeminal and suprasellar cisterns is the common location for intracranial lipomas.
Cerebral artery MR angiography, bilateral carotis arteries, anterior cerebral artery, pericallosal
artery and mid cerebral artery, Willis Polygon arterial structures, basilar artery, and arteria cerebri posterior branches were normal; no aneurysm, malformation or displacement were detected; venous MR angiography revealed a slightly weakened right transverse sinus calibration (variation) and normal sagittal sinus, straight sinus, left transverse and sigmoid sinus alignments and calibrations.
The characteristic signs suggestive of ACC are: moderate distension of the occipital ventricle and the ventricular communications; absence of the spectrum giving rise to an upward displacement of the third ventricle shown in the anterior coronal section (especially in transvaginal ultrasonography); radial position of the fissures on the internal side of the cerebral hemisphere seen on the sagittal section; the absence in color coded Doppler of the pericallosal
artery normally characterized by a semicircular vessel observable on the median sagittal section.
The choroidal type occurs when arterial feeders originate from the pericallosal
, choroidal or thalamoperforaters.
of California, San Francisco) details the basic concepts and tenets of aneurysm microsurgery, various craniotomies and exposures for successful clipping, and microsurgical anatomy, dissection strategies, and clipping techniques for each of the seven most common aneurysm types: posterior and anterior communicating artery, middle cerebral artery, ophthalmic artery, basilar bifurcation, pericallosal
artery, and posterior inferior cerebellar artery aneurysms.
Distribution of coiled aneurysms Anterior choroidal 1 Anterior communicating 7 Basilar tip 11 Carotid termination 3 Intracavernous 3 Superior hypophyseal 1 Middle cerebral artery 13 Ophthalmic 2 Posterior cerebral 1 Posterior communicating 36 Pericallosal
1 Superior cerebellar 1 Vertebral 4 Total 84 Table II.