Tumor Supratentorial

Brain tumors are large processes of tissue nature, which are characterized by the proliferation of pathological tissues with destruction of surrounding normal structures. More than 40% of brain tumors, which accounts for more than 30 nosological forms, are characterized by its supratentornial location. 70% are gliomas\n

Tumors in the cerebral hemispheres and in the cerebellum are distributed approximately equally. In the brain stem, ependymoblastomas predominate - tumors arising from the ependyma of the ventricles, as well as neuroectodermal tumors (medioneuromas) of extrapyramidal localization, leukodystrophies, obstructive hydrocephalus, syringomia

Tumors of the tecto-parietal region of the 4th ventricular system are a relatively rare clinical and morphological variant of brain tumors. The Latin name for this area is “gap” or “zone of transition.”

The supratentor is the upper part of the human cerebrum, between the pons and the midbrain.

Pathomorphology Tumors are located at the base and on both sides of the 4th ventricle of the brain, in the lateral cistern of the pons and the adjacent substance of the cerebral hemispheres. There is a high frequency of tumors located in the subcortical nuclei of the thalamus opticus, the pons and in the upper sides of the lateral ventricles. Tumor-like diseases near the apex of the lenticular fossa and under the membrane of the corpus callosum, rarely in other parts of the diencephalon, diffuse tumors are more often described in the supramolecular region of the norapineid formation, with agenesis of these structures. More rare localization of the tumor in the basal ganglia, laterally in the pyramids of the bridge, the anterior part of the legs, the basal part of the pons, the posterior surface of the cerebellum and medulla oblongata. In the embryonic period there are no noticeable disturbances in the development of the meninges, the upper part of the brain down to the middle of the hindbrain. The final establishment of pyramid-shaped external spaces occurs between 9 and 12 months of age. Later, the sulci of the pyramids are occluded by tortuous ependyma in 75% of cases, symmetrically to the right and left of the longitudinal fissure of the brain. Often there is almost complete blockage along the entire length of the grooves and holes in a pyramidal shape. Vertebral aspects remain open until approximately lifespan 9