Key result
The circle of Willis exhibits a wide diversity of anatomical variations in its forming arterial vessels across 62 examined post-mortem specimens.
This anatomical study details the frequency and diversity of variations in the circle of Willis, providing insights into their ontogenic causes.
Urges caution assuming standard cerebral anatomy in interventions; extends anatomical mapping but leaves clinical correlations open.
This work is based on a study of 62 circles of Willis (circulus arteriosus cerebri) from patients dead from diverse causes. We have described the wide diversity of variations found to be present in the arterial vessels that form the circle, we presented the frequency of the different variations, and finally we discuss the possible ontogenic cause of these variations.
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Puchades-Orts et al. (1976) studied this question. The circle of Willis exhibits a wide diversity of anatomical variations in its forming arterial vessels across 62 examined post-mortem specimens.
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