Tumors of the base posterior cranial fossa are among most difficult for surgical treatment in neurosurgery. Numerous studies being conducted on factors that determine clinical manifestations and outcomes. The aim study was to linear angular parameters patients with extracerebral neoplasms evaluate their effect results treatment. Craniometric performed 115 sub-tentorial tumors. A computer progra...

Intraspinal subdural lipomas are rare tumors of the spinal canal. Such tumors occur in the thoracic and cervical region; however, extension into the posterior fossa and fourth ventricle is most unusual. We describe two children, an infant and a teenager, with progressive neurologic deficit from such a lipomatous tumor. The lipoma in the infant extended into the lower fourth ventricle and caused...

Brain tumors represent the most common solid neoplasm in children and second most common pediatric malignancy overall, following leukemia. Outside of infancy, the majority of primary childhood brain tumors occur in the infratentorial compartment and include medulloblastoma, juvenile pilocytic astrocytoma (JPA), ependymoma, and brainstem/ pontine glioma; atypical teratoid rhabdoid tumor (ATRT) i...

The results of nuclear magnetic resonance (NMR) examinations in 26 patients with histologic (15 cases) or clinical (11 cases) diagnoses of tumors within the posterior fossa were reviewed and compared with x-ray computed tomography (CT). Most tumors displayed an increase in T1 and T2 relative to brain. All seven benign tumors were seen with both CT and NMR, although one of these cases initially ...

Pediatric brain tumors occur mainly in the posterior fossa. Clinicians encounter numerous difficulties and challenges in establishing the diagnosis. Symptomatology varies according to the location of tumor, its rate of progression, and the age of the child. Most of them are usually nonspecific and misinterpreted as common benign childhood disorders. Consequently, a significant delay arises betw...

Intracranial dermoid tumors represent a rare clinical entity accounting for 0.1-0.7% of all intracranial tumors. Their location in the posterior fossa is uncommon. We report a 16-year-old male patient who presented with clinical signs of increased intracranial pressure and cerebellar symptoms. The CT scan revealed a median cystic lesion of the fourth ventricle causing an active triventicular hy...

Hemangioblastomas are World Health Organization (WHO) grade I tumors of uncertain histologic origin. These central nervous system tumors are most often found in the posterior fossa, brainstem, and spinal cord. There are fewer than 20 reported cases of optic nerve hemangioblastomas in the literature. We present a patient with visual decline found to have a mass arising from within the posterior ...

BACKGROUND AND PURPOSE Posterior fossa syndrome is a severe postoperative complication occurring in up to 29% of children undergoing posterior fossa tumor resection; it is most likely caused by bilateral damage to the proximal efferent cerebellar pathways, whose fibers contribute to the Guillain-Mollaret triangle. When the triangle is disrupted, hypertrophic olivary degeneration develops. We hy...