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About 5 cm. in front of the occipital pole on the infero-lateral border is an indentation or notch, named the preoccipital notch. It is considered a landmark because the occipital lobe is located just behind the line that connects that notch with the parietoccipital sulcus.
Preoccipital notch (shown in red)
Preoccipital notch (shown in red)
This article incorporates text in the public domain from the 20th edition of Gray's Anatomy (1918)
