anterior cranial fossa


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Related to anterior cranial fossa: Posterior cranial fossa, Middle cranial fossa

an·te·ri·or cra·ni·al fos·sa

[TA]
the portion of the internal base of the skull, anterior to the sphenoidal ridges and limbus, in which the frontal lobes of the brain rest.

anterior cranial fossa

The anteriormost of the three divisions of the internal cranial base, which houses the inferior face of the frontal lobes of the brain. The floor of the fossa is covered by dura mater and is formed by contributions from the frontal, ethmoid and sphenoid bones. The anterior cranial fossa is limited anteriorly and laterally by the frontal bone.

anterior cranial fossa

The anterior one-third of the floor of the cranial cavity; the fossa is formed from the orbital part of the frontal bones, the cribriform plates of the ethmoid bone, and one third of the anterior sphenoid bones (the anterior body and lesser wings). The olfactory lobes and the inferior surfaces of the cerebral hemispheres lie in this fossa.
See also: fossa

an·te·ri·or cra·ni·al fos·sa

(an-tērē-ŏr krānē-ăl fosă) [TA]
Portion of internal base of skull, anterior to the sphenoidal ridges and limbus, in which cerebral frontal lobes rest.
References in periodicals archive ?
3-6) Extension of these tumors may lead into the anterior cranial fossa through the cribriform plate.
T4a: The tumor has invaded the anterior orbit, anterior cranial fossa, overlying facial dermis, sphenoid sinus, or frontal sinus.
As for surgical therapy, by the time this patient had been diagnosed, imaging had already demonstrated erosion of a significant part of his anterior skull base and enhancement of the dura of the anterior cranial fossa.
Areview of his original computed tomography (CT) scan (figure) revealed the presence of a large, destructive lesion that involved the sinonasal area and extended into the anterior cranial fossa, a significant degree of associated vasogenic edema in the adjacent frontal lobes of the brain, and signs of hemorrhage.
Applying excessive force to the middle turbinate can cause a fracture to the floor of the anterior cranial fossa and result in cerebrospinal fluid leak.
At the time of presentation, the disease had involved the orbit and extended into the anterior cranial fossa and skull base.
The mass extended into the right orbit and anterior cranial fossa.
The mass continued to extend superiorly to the skull base of the anterior cranial fossa, and it exerted a mass effect in which it pushed intracranially at its most superior aspect.

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