Morphology of the walls of the cavernous sinus of Cebus apella (tufted capuchin monkey)

Abstract

The morphology of the dura mater and its relationship with the structures of the cavernous sinus were analyzed in five tufted capuchin monkeys (Cebus apella) using histological sections, showing that the walls of the cavernous sinus of this species are similar to those of other primates, including man. Except for the medial wall of the cavernous sinus, the remaining walls consist of two distinct dura mater layers. The deep layer of the lateral wall of the cavernous sinus is contiguous to the sheath of the oculomotor, trochlear and ophthalmic nerves. Arterioles, venules, venous spaces, neuronal bodies and nervous fiber bundles are found on this lateral wall.

Cavernous sinus medial wall: dural or fibrous layer? Systematic review of the literature

“…2 An image of the pituitary gland which is taught to be contained within a dural layer that limits the CS medially Fig. 1 The cavernous sinus is located on either side of the sphenoid sinus, sella, and pituitary gland extending from the superior orbital fissure to the petrous ridge of the temporal bone identified a dural layer [12] forming the medial wall of the CS and separating the CS from the sella and pituitary capsule [14,25,26], or separating the CS directly from the pituitary gland [2,3,6,8,23,27] (Fig. 3).…”

“…The second group, which identified the medial wall of the CS as comprised of a dural layer, did not utilize MRI in their methodology. However, 61.5% prosecuted microscopic dissection [2,3,8,12,14,[25][26][27], and 38.5% used histological section with Masson's trichrome, hematoxylin and eosin, or hemalaun, eosin, and saffron [6,8,14,23,27]. In one study, the thickness of the pituitary capsule and the inferior and lateral pituitary fossae was measured, and the collagen structure from these layers was analyzed [14], while in another study, computer measurements of medial wall of the CS thickness were compared in the three different regions (posterior, middle, and anterior) and also on the left vs. the right sides [27].…”

“…However, Destrieux et al [3] assumed that this pituitary capsule is formed from dura mater, the medial wall of the CS being the lateral part of this dural sac that encases the pituitary gland. Dura mater separates the CS from the pituitary gland not only in humans but in primates as well [6]. Accordingly, the investigations of Yilmazlar et al [27] showed that the medial wall of the CS is a distinct dural layer that forms a barrier between the medial venous space of the cavernous sinus and the pituitary gland.…”

Parede medial do seio cavernoso: dura-máter ou tecido fibroso?: Revisão sistemática da literatura

“…Dessa forma, 11 estudos foram escolhidos para a tabulação. Dentre estes, três (198 amostras, 43,7% de todas as amostras incluídas nesta revisão) referiramse à parede medial do SC como uma estrutura fi brosa frouxa 3,7 ou como a própria cápsula pituitária de fi bras colágenas fi nas 23 e oito (255 amostras, 56,3%) identifi caram, no SC, uma parede medial formada por uma camada de dura-máter 8 separando o SC da sela túrcica e cápsula pituitária 10,21,22 ou da própria glândula 2,5,6,18 .…”

Medial portion of the cavernous sinus: Quantitative analysis of the medial wall

“…A variety of different surgical approaches to this area have been described (Fahlbusch and Buchfelder, 1988;Origitano et al, 1992;Fraioli et al, 1995;Dolenc, 1997;Kitano and Taneda, 2001;Liu et al, 2001;Day, 2003), however, only a few studies have focused on the medial venous space and the medial wall of the CS (MWCS). The observations documented in these latter reports have been inconsistent (Chi and Lee, 1980;Inoue et al, 1990;Knosp et al, 1993;Ciric, 1997;Kehrli et al, 1998;Domingues et al, 1999;Yokoyama et al, 2001).…”