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An angiographic study of incidence and morphology of infundibular dilatation of the posterior communicating artery

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Summary

In the last 9 years, infundibular dilatation (ID) has been sought in 260 aneurysm (An) cases and 398 carotid angiogram's (CAG) to reveal its incidence and morphology. Findings were as follows:

  1. 1)

    The incidence was about double that so far published.

  2. 2)

    Small ID, usually triangular in shape, tended to become round as it grew larger (P<0.01).

  3. 3)

    Large ID favored young age (P<0.05).

  4. 4)

    In internal carotid-posterior communicating aneurysm (IC-P com-An) cases, a high incidence of ID was noted as compared to other An cases (P<0.05), and intermediate or large, round ID accounted for high ratios.

  5. 5)

    Cases with a history of hypertension showed a high large ID ratio (P<0.05).

  6. 6)

    Cases with well developed P com A had a high ratio of large, round ID (P<0.01).

  7. 7)

    In cases with a large divergent angle of ICA and P com A, intermediate or large, round ID was found in high ratio (P<0.05).

  8. 8)

    Aggressive follow-up or treatment was thought necessary in cases which posses the factors mentioned.

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Ebina, K., Ohkuma, H. & Iwabuchi, T. An angiographic study of incidence and morphology of infundibular dilatation of the posterior communicating artery. Neuroradiology 28, 23–29 (1986). https://doi.org/10.1007/BF00341761

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  • DOI: https://doi.org/10.1007/BF00341761

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