collateral sulcus http://upload.wikimedia.org/wikipedia/commons/9/93/Gray738.png NCIT:C32340 sulcus collateralis neuronames:47 Wikipedia:Collateral_fissure SCTID:279356006 FMA:83751 ncithesaurus:Collateral_Sulcus sulcus collateralis HBA:9380 COS UBERON:0002716 BIRNLEX:1480 collateral fissure UMLS:C0228226 BAMS:cos The collateral fissure (or sulcus) is on the tentorial surface of the hemisphere and extends from near the occipital pole to within a short distance of the temporal pole. Behind, it lies below and lateral to the calcarine fissure, from which it is separated by the lingual gyrus; in front, it is situated between the hippocampal gyrus and the anterior part of the fusiform gyrus. [WP,unvetted]. fissura collateralis DHBA:10618 cnit has two distinct classes; FMA and NIF treat these as exact synonyms. subarachnoid sulcus