Defects of the bony structures of the temporal bone in the base of the middle and/or posterior cranial fossa
were usually asymptomatic.
Comparison of maximum dimensions of foramen Vesalius was done on right and left sides of middle cranial fossa
. Unpaired t-test was used.
(B) Postoperative coronal CT with dehiscent middle cranial fossa
(MCF) floor and zygoma (Z).
The skull base separates the cranium from the nasal cavity and pharynx and extends between the anterior and posterior limits of the cranial fossa
. Several cranial nerves and vascular structures have a significant relationship with the skull base, cerebrum, cerebellum and brainstem.
A head MRI performed two weeks prior to the presentation (for lung cancer staging) showed a left middle cranial fossa
, 3.9 x 3.7 x 2.9 cm contrast enhancing, extra-axial, and dural based mass, with possible mineralization centrally within the mass (Figure 1C).
An intraorbital foreign body with triangular shape of 4.6 cm x 2 cm was seen in the left orbit, passing through the orbit and the ocular globe, fracturing the superomedial wall of the orbit, with a probable associated fracture of the ethmoidal cells, and reaching the anterior cranial fossa
, causing pneumocephalus (Figures 1 and 2).
Displacement of the condylar head into the middle cranial fossa
is an extremely rare event.
Dandy-Walker malformation (DWM), a congenital anomaly of the posterior cranial fossa
, characterized by the triad of cystic dilatation of the fourth ventricle, enlarged posterior fossa, and complete or partial agenesis or absence of the cerebellar vermis and hydrocephalus (1,2).
The diameter of intracranial extension section was 3.5 cm, which mainly located in middle and posterior of cranial fossa
The tumor was grossly resected, leaving microscopic disease adherent to the anterior cranial fossa
dura and right optic nerve region.
An aesthetic approach to the anterior cranial fossa
: the endoscopic transadnexal transorbitalroof method.