What is anterior Clinoid process?
The anterior clinoid process (ACP) is a bony structure on the superolateral aspect of the sphenoid sinus lying between the internal carotid artery and the optic nerve. Blockage of the drainage of a paranasal sinus for any reason can result in accumulation of trapped secretions and result in a mucocele.
What is a Clinoid meningioma?
Clinoidal meningiomas (CM) are benign tumors arising from the meningeal covering of the anterior clinoid process (ACP). These tumors have been referred to by various other terms, such as medial or inner sphenoid wing meningiomas.
What attaches to clinoid process?
The posterior border of small wing of sphenoid, smooth and rounded, is received into the lateral fissure of the brain; the medial end of this border forms the anterior clinoid process, which gives attachment to the tentorium cerebelli; it is sometimes joined to the middle clinoid process by a spicule of bone, and when …
Where is the clinoid process located?
Background: The anterior clinoid process (ACP) is located close to the optic nerve, internal carotid artery, ophthalmic artery, and can be easily injured in an ACP-related surgery.
Where is the Clinoid located?
The anterior, middle and the posterior clinoid processes are located in the middle cranial fossa of the skull. The posterior boundary of the pituitary fossa is formed by the dorsum sellae, the supero-lateral angles of which are raised to form the posterior clinoid process.
Where is the Clinoid process located?
What forms the posterior Clinoid process?
What are the cavities within the skull?
The skull contains air-filled cavities called sinuses. Their functions are debatable, but may be related to lessening skull weight, contributing to voice resonance, and warming and moistening inspired air.
Where is the Clinoid bone located?
The anterior clinoid process (ACP) is a bony projection on the medial extremity of the posterior border of the lesser sphenoid wing.
Why is contrast enhanced MRI used to diagnose meningiomas?
Further, contrast-enhanced MRI has the highest ability to detect and characterize meningiomas radiologically. 1 This high rate of diagnostic accuracy can be attributed to special properties of the MRI technique presented in this chapter that provide vast information on meningiomas.
What is the difference between MRI and CT imaging?
In this respect, MRI is advantageous over computed tomography (CT) imaging, in which bone and enhanced dura both appear as hyperdense structures and cannot be distinguished from each other.
What is the best technique for t2-wi in MRI?
However, turbo spin echo (TSE) or fast spin echo (FSE) has been the preferred technique for T2-WI. FLAIR, which is part of routine brain MRI, is a heavily T2-WI sequence in which free water is suppressed to highlight meningiomas near the brain surface or in the ventricles.
What is the pathophysiology of mucocele of the anterior clinoid process?
The pathologic diagnosis was mucocele of the anterior clinoid process. The patient made a full recovery of both sensory and motor functions and has returned to work. These two cases represent rare occurrences of mucocele formation in the osseous structures adjacent to the orbital apex.