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Clinical significance of a bony canal of the clivus (CROSBI ID 81626)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Jalšovec, Dubravko ; Vinter, Ivan Clinical significance of a bony canal of the clivus // European archives of oto-rhino-laryngology, 256 (1999), 3; 160-161-x

Podaci o odgovornosti

Jalšovec, Dubravko ; Vinter, Ivan

engleski

Clinical significance of a bony canal of the clivus

In the postmortem skull base of a 50-year-old man we found a canal in the posterior third of the clivus (Fig. 1). The superior opening of the canal was located 7 mm above the anterior margin of the occipital foramen magnum in the middle of the clivus. The inferior opening was situated 2 mm above the border of the occipital foramen. A 1-mm-long and 2-mm large process protruded from the inferior border of the foramen. The inferior opening ended just above this process. The width of the canal was 1.2 mm. The skull was macerated so that we could only speculate about the contents and significance of this canal. Taking into consideration the localization of the canal, we considered two possible explanations: 1. During life the canal contained a vein connecting the basilar plexus with the venous plexus of the vertebral canal. 2. The canal contained remnants of the notochord. The venous system displays a great variability, and hence it is mere speculation to make it responsible for the formation of an osseous canal. The venous system in general develops in the 4th and 5th week of fetal development. The venous system of the skull base and of the vertebral canal develops gradually.

Occipital bone; Clivus canal; Notochord

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Podaci o izdanju

256 (3)

1999.

160-161-x

objavljeno

0937-4477

Povezanost rada

nije evidentirano

Indeksiranost