23 Cerebrovascular and Intraventricular Dissection



10.1055/b-0037-146648

23 Cerebrovascular and Intraventricular Dissection


Maria Peris-Celda and Alejandro Monroy-Sosa

Fig. 23.1. Left cerebral hemisphere, lateral view.
Fig. 23.2. Brain, superior view.
Fig. 23.3. Brain, inferior view. The brainstem has been divided at the level of the midbrain.
Fig. 23.4. The main arteries that supply the brain (including the cerebral arterial circle), anterior view.
Fig. 23.5. Brain, left lateral view. The frontal, parietal, and temporal opercula have been removed to expose the insula and middle cerebral artery branches.
Fig. 23.6. Right side of the brain, lateral view. Part of the right hemisphere has been divided in the axial plane to expose the lateral ventricle. The superior frontal gyrus has been removed on the left side.
Fig. 23.7. Superior view of the dissection in Fig. 23.6. The right lateral ventricle, insula, and superior aspect of the temporal lobe are exposed.
Fig. 23.8. Lateral view of the right middle cerebral artery and its branches in the insula.
Fig. 23.9. Inferior surface of the cerebrum, right side. The temporal lobe has been partially removed and the lateral ventricle exposed.
Fig. 23.10. Inferior view of the right internal carotid artery bifurcation in anterior and middle cerebral arteries.
Fig. 23.11. Left cerebral hemisphere, lateral view. The superior half has been removed to expose the falx and the lateral ventricle.
Fig. 23.12. Left cerebral hemisphere, lateral view. Part of the left hemisphere has been removed to expose the lateral ventricle. The falx has been removed to expose the medial aspect of the right hemisphere.
Fig. 23.13. Temporal horn of the left lateral ventricle and hippocampus. The choroid plexus has been retracted superiorly.
Fig. 23.14. Atrium of the left lateral ventricle. The choroid plexus has been retracted superiorly and medially.
Fig. 23.15. Posterior aspect of the left lateral ventricle. The choroid plexus has been retracted anteriorly.
Fig. 23.16. Left hippocampus. The choroid fissure has been opened on the forniceal side to expose the ambient and quadrigeminal cisterns.
Fig. 23.17. Superior view of the brain divided in the axial plane. The brain has been dissected to expose the entire left ventricle and the frontal horn and body of the right ventricle.
Fig. 23.18. Body of the lateral ventricles, superior view.
Fig. 23.19. Body of the lateral ventricles, superior view. The fornices have been split in midline to expose the internal cerebral veins.
Fig. 23.20. Body of the lateral ventricles, superior view. The right internal cerebral vein has been exposed by opening the right choroidal fissure between the choroid plexus and the fornix.
Fig. 23.21. Superior view of the third ventricle. The thalami and internal cerebral veins have been retracted laterally.
Fig. 23.22. Overview of the lateral ventricles and third ventricle, superior view. The left thalamus has been resected to expose the vascular structures in the perimesencephalic cisterns.
Fig. 23.23. Left hippocampus, posterior oblique view. The thalamus has been resected.
Fig. 23.24. Third ventricle, superior view. The fornices have been resected.
Fig. 23.25. Left hippocampus and tentorial incisura, lateral view.
Fig. 23.26. Left lateral view of the brainstem, hippocampus, cranial base, and tentorium. The left cerebral hemisphere has been removed, leaving the main cerebral arteries.
Fig. 23.27. Superior view of the cranial base and cerebrovascular structures, midbrain, and third ventricle.
Fig. 23.28. Superior view of the tentorium, third ventricle, and midbrain.
Fig. 23.29. Superior view of the anterior aspect of the third ventricle and optic chiasm. The premammillary area has been resected to expose the basilar artery.
Fig. 23.30. Specimen divided in the sagittal plane, left lateral view. The cingulate gyrus has been preserved and the falx cerebri exposed.
Fig. 23.31. Specimen divided in the sagittal plane. Left anterior oblique view of the precallosal and infracallosal areas.
Fig. 23.32. Specimen divided in the sagittal plane. Left lateral view of the sellar, supra-, and infrachiasmatic areas.
Fig. 23.33. Specimen divided in the sagittal plane. Left superior oblique view of the lateral ventricle and interventricular foramen.
Fig. 23.34. Specimen divided in the sagittal plane, left lateral view. The lateral, third, and fourth ventricles are exposed.
Fig. 23.35. Specimen divided in the sagittal plane, left lateral view. Enlarged view of the third ventricle.
Fig. 23.36. Specimen divided in the sagittal plane. Posterior view of the third ventricle.
Fig. 23.37. Anterior view of both cerebral hemispheres and the brainstem and cerebellum. Part of the frontal and temporal lobes has been resected to show the arteries of the brain.
Fig. 23.38. Enlarged view of the cerebral arterial circle, inferior view of the brain.
Fig. 23.39. Left lateral view of the brain. The left cerebral hemisphere has been partially resected, preserving the insula.
Fig. 23.40. Left lateral view of the mesencephalon, the superior part of the pons, and related neurovascular structures.
Fig. 23.41. Posterior inferior view of the brain. The left hemisphere has been partially resected, and the insula has been preserved. Note the venous structures around the splenium of the corpus callosum.
Fig. 23.42. Brainstem and cerebellum, anterior view.
Fig. 23.43. Brainstem and cerebellum, left lateral view.
Fig. 23.44. Brainstem and cerebellum, left anterolateral view.
Fig. 23.45. Brainstem and cerebellum, superior view.
Fig. 23.46. Brainstem and cerebellum, right superolateral view.
Fig. 23.47. Enlarged view of the superior aspect of the brainstem and cerebellum.
Fig. 23.48. Brainstem and cerebellum, posterior view.
Fig. 23.49. Brainstem and cerebellum, inferior view.
Fig. 23.50. Right cerebellopontine angle, lateral view. The dissector has been placed to open and expose the lateral aperture of the lateral recess.
Fig. 23.51. Right cerebellopontine angle, anterior view.
Fig. 23.52. Cerebellar tonsils and medulla, posterior view.
Fig. 23.53. Cerebellar tonsils and medulla, posterior view. The tonsils have been elevated to expose the inferior medullary velum and tela choroidea.
Fig. 23.54. Lateral view of the left tonsil and medulla. The cerebellum has been divided in midline.

Only gold members can continue reading. Log In or Register to continue

May 23, 2020 | Posted by in NEUROSURGERY | Comments Off on 23 Cerebrovascular and Intraventricular Dissection
Premium Wordpress Themes by UFO Themes