Autor:	DUGDALE, L. M.
Zdroj:	Australasian Radiology; 1981, Vol. 25 Issue 3, p237-238, 2p
Abstrakt:	SUMMARY The ponticulus posterior is a congenital variant of the first cervical vertebra, or atlas. It occurs in approximately 15% of Caucasian subjects, and appears to have no differences in distribution between the sexes, nor a predominance to either side. Normal age distribution indicates that it is not an aging phenomenon. The size of the foramen produced is a good indicator of the diameter of the contained vertebral artery. [ABSTRACT FROM AUTHOR]
Databáze:	Complementary Index
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