Petrobasilar, petroclival or petrosphenoidal canal of the abducens nerve
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We read the article by Pizzolorusso and colleagues  with great interest. We would like make a comment on the abducens nerve canal term, which was the main topic of their report. Many authors have described this canal previously [1, 7, 8, 10, 11]. Recently, bilateral bony canals of the abducens nerves have been examined by both anatomical dissection and through thin-sliced computed tomography (CT) images obtained on axial, sagittal, and coronal planes .
We feel that it is necessary to describe the difference between the bony canal of the abducens nerve and the calcification of the petrosphenoidal ligament (PSL). It has been expressed that the canal or the PSL calcification terms are defined according to their content and location . If the canal includes only the abducens nerve dural sleeve with the nerve, it can be accepted as the petroclival canal (PCC) , petrosphenoidal canal , or petrobasilar canal as termed in Pizzolorusso’s report . Otherwise, if the...
- 2.Kayaci S, Yildirim T, Ogden M, Unal O, Sam B, Ucuncu Y (2016) Petroclival canal: a rare passage of the abducens nerve at the petroclival region-anatomic variation. Jacobs J Anat 1(3):011Google Scholar