Clinical Neuroscience

[Clinical significance of the Circulus arteriosus Willisi with special reference to hypoplasia]

LEEL-ŐSSY Lóránt1

JANUARY 01, 1967

Clinical Neuroscience - 1967;20(01)

[After a detailed anatomical description of the circulus arteriosus Willisi, the first part of the paper describes the occurrence of hypoplasia in each branch. In the second part, the dynamic characteristics of the blood circulating in the CAW are used to illustrate the crucial regulatory, distributive and collateral role of the formula in the first stage of cerebral circulation. In the third part, the clinical relevance of anomalies (mainly hypoplasia) is highlighted. A study of the brains of 100 cerebrovascular and 100 non-cerebrovascular deceased individuals shows the well-known fact that CAW anomalies are twice as common in cerebrovascular diseases as in non-vascular diseases. It describes the predisposing, preforming, pathoplastic effects of anomalies in emollients, haemorrhages and thromboses. The frequent occurrence of anomalies is known in pituitary aneurysms, and anomalies often allow the development of severe arteriosclerosis in the basal vessels, if the mechanical theory of anteriosclerosis is considered. In relation to general CAW hypoplasia, he lists 19 cases of vascular injury or other disease, functionally modified by the anomaly. Among the latter, he points out the atypical course of three endogenous pathologies in particular. ]

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  1. Hajdu-Bihar Megyei Tanács Kórház Ideg-elmeosztálya és a Debreceni Orvostudományi Egyetem Ideg-Elmeklinikája

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