PubMed · 16408364
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J M S Pearce. 2005. Heubner's artery.. https://doi.org/10.1159/000088646
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An unpaired trunk forming part of the anterior cerebral arteries, the so-called azygos pericallosal artery, was found in a male fetus among a collection of 200 fetuses. The morphological characteristics of the trunk and the anterior cerebral arteries at the "preazygos" and the "postazygos" segments were examined using an operating microscope. The azygos pericallosal artery distributes into three postazygos segments of which only the median postazygos segment or median callosal artery had a bihemispheric distribution of its branches to the medial telencephalic surfaces.
There is considerable inconsistency in the description of the origins, dimensions, and course of the recurrent artery of Heubner (RAH). The RAH frequently supplies parts of the basal ganglia and the anterior limb of the internal capsule and can be damaged with improper clip placement during repair of aneurysms near the anterior communicating artery. Thus, further elaboration of the anatomical descriptions of the RAH is necessary. The gross anatomy of the RAH was studied in 69 human brain hemispheres. RAH was found as a single vessel in 53 hemispheres (77%), as double arteries in 12 hemispheres (17%), and was absent in 4 hemispheres (6%). The origin of the RAH was from the junction of the anterior cerebral artery and anterior communicating artery in 48 (62.3%) hemispheres, from the proximal A2 segment of the anterior cerebral artery in 18 (23.3%) hemispheres and from the A1 segment in 11 (14.3%) hemispheres. The diameters of the artery ranged from 0.2 to 1.3 mm with a mean of 0.8 mm, while the length ranged from 0.9 to 3.8 cm with a mean of 2.4 cm. The above data may provide important information to neurosurgeons operating in this area, as well as to neuroanatomists teaching the vascular supply of the brain.
We report a case of a 7-month-old male with primary intracranial haemorrhage 2 months after infection with varicella zoster virus (VZV). His initial clinical course was complicated by seizures and right hemiparesis; when last seen at 22 months the only positive finding was of left hand preference. Although the literature has recently established the association of arterial ischaemic stroke and VZV infection, primary intracranial haemorrhage has been reported only in one case. The child reported here had anterior interhemispheric haemorrhage due to a focal arteritis of the left anterior cerebral artery. The vascular abnormality was transient and had radiological features compatible with either a focal arteritis or vasospasm as a direct result of blood surrounding the vessels. We postulate that direct invasion of VZV caused extensive inflammation of the vessel wall and aggressive tissue penetration resulting in necrotizing angiitis and intracranial haemorrhage. We suggest that VZV infection should be considered a potential risk factor for intracranial haemorrhage in children.