Medical Definition of cranial fossa : any of the three large depressions in the posterior, middle, and anterior aspects of the floor of the cranial cavity: a : the posterior one that is the largest and deepest of the three and lodges the cerebellum, pons, and medulla oblongata A segment of skull bone is removed to allow access to the cranial fossa floor.

The posterior fossa contains many important structures including the brainstem, cerebellum and lower cranial nerves. Subtemporal-preauricular infratemporal fossa approach to large lateral and posterior cranial base neoplasms. It contains the cerebellum, pons, and medulla oblongata with many vital centers.

[Google Scholar] Sekhar LN, Schramm VL, Jr, Jones NF. Am J Otol. The sigmoid, transverse and occipital sinuses all traverse the fossa.

1987 Oct; 67 (4):488–499. The area where This brain operation is performed to repair the cranial fossa floor and stop the brain fluid leaking through the nose. Computed tomography of the infratemporal fossa in primary jaw pathology. A cut is usually made on the head through the hairline from ear to ear. Anterior Cranial Fossa Floor?

Clin Radiol. Posterior Fossa Surgery: Posterior Fossa Surgery Posterior cranial fossa: It is the deepest and most capacious of the 3 cranial fossae. Posterior fossa syndrome, or cerebellar mutism, is a condition that sometimes develops after surgery to remove a brain tumor in the posterior fossa region of the brain. Gantz BJ, Harker LA, Parnes LS, McCabe BF.

Tumors in the posterior fossa are considered critical brain lesions. Middle cranial fossa Acoustic neuroma excision: results and complications.

Hertzanu Y, Mendelsohn DB. J Neurosurg. The interpeduncular fossa is a somewhat rhomboid-shaped area of the base of the brain, limited in front by the optic chiasma, behind by the antero-superior surface of the pons, antero-laterally by the converging optic tracts, and postero-laterally by the diverging cerebral peduncles.. 1998;19:208-211. Ann Otol Rhinol Laryngol. 1984 May; 35 (3):203–207. Gantz BJ. Middle Cranial Fossa Technique Lecture Slides; Chen DA, Arriaga MA, Fukushima T. Technical refinements in retraction for middle fossa surgery. The posterior fossa is a space near the base of the skull that contains the cerebellum and brain stem.