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Schematic displays are presented of the cerebral territories supplied by branches of the middle cerebral artery as they would appear on axial and coronal computed tomographic (CT) scan sections. Companion diagrams of regional cortical function and a discussion of the fiber tracts are provided to simplify correlation of clinical deficits with coronal and axial CT abnormalities.

The purpose of this article is to describe the complex anatomy of the pelvic ligaments. It uses schematics to display 10 color-coded ligaments in relation to the bony architecture. This atlas and the accompanying summary of the classification of pelvic ligamentous injuries is designed to encourage the use of magnetic resonance imaging in cases of pelvic ring trauma.

Ten patients were studied in whom precontrast computed tomography (CT) revealed an isodense mass which obliterated cerebral sulci and deformed the ventricle(s). Upon rapid-high-dose (RHD) contrast enhancement, the cerebral hemispheric surface was so well demonstrated, that in 4 patients the possibility of an isodense subdural hematoma was exluded, while in the other 6 it was correctly diagnosed. Preoperative angiography was not necessary.

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This paper is the third in a series of three that organizes the complex anatomy of the cervical, thoracic, and lumbar spinal ligaments. It describes and color-codes the anatomy and nomenclature of the capsular membranes and minor spinal ligaments. The first two articles describe the dorsal and ventral ligaments, respectively.

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~' A large air-filled intracranial extradural diverticulum of the frontal sinus mucosa was removed from the anterior cranial fossa of a 47-year-old man 2 years after fracture of the posterior sinus wall during craniotomy. KEY WORDS 9 craniotomy complication 9 extradural aeroceleAddress reprint requests to: L.