Pineal Region Tumors
Ahmed El Said Ahmed;
Abstract
Tumors of the pineal region account for just 0.5% to I% of the human brain tumors and they present a "Challenge to any neurosurgeon.
The pineal region is limited dorsally by the splenium of the ,.;orpus callosum and tela choroida, ventrally by quadrigeminal plate, rostrally by posterior part of third ventricle and caudally by the vermis of cerebellum.
The physiologic role of the pineal gland itself is not completely understood. Melatonin is essential in regulating circadian rhythms. The absence of production of melatonin, as after pinealecotmy causes a Get-lag) like syndrome causing complete disturbance of circadian rhythms.
The pathologic classification of the pineal region tumors divides them into several different groups including germ cell tumors, pineal parenchymal tumors, tumors of supporting and adjacent structures, metastatic tumors of the pineal gland, non neoplastic mass lesions in pineal region.
The clinical presentation of the pineal region tumors includes hydrocephalus, Parinaud's syndrome, thalamic affection, dementia and manifestations of meningeal seeding. Investigations include laboratory measures of the tumor markers secreted by some tumors in both blood and CSF and computerized tomography (CT) and magnetic .resonance imaging (MRI).
The pineal region is limited dorsally by the splenium of the ,.;orpus callosum and tela choroida, ventrally by quadrigeminal plate, rostrally by posterior part of third ventricle and caudally by the vermis of cerebellum.
The physiologic role of the pineal gland itself is not completely understood. Melatonin is essential in regulating circadian rhythms. The absence of production of melatonin, as after pinealecotmy causes a Get-lag) like syndrome causing complete disturbance of circadian rhythms.
The pathologic classification of the pineal region tumors divides them into several different groups including germ cell tumors, pineal parenchymal tumors, tumors of supporting and adjacent structures, metastatic tumors of the pineal gland, non neoplastic mass lesions in pineal region.
The clinical presentation of the pineal region tumors includes hydrocephalus, Parinaud's syndrome, thalamic affection, dementia and manifestations of meningeal seeding. Investigations include laboratory measures of the tumor markers secreted by some tumors in both blood and CSF and computerized tomography (CT) and magnetic .resonance imaging (MRI).
Other data
| Title | Pineal Region Tumors | Other Titles | اورام المنطقة الصنوبرية | Authors | Ahmed El Said Ahmed | Issue Date | 2001 |
Recommend this item
Similar Items from Core Recommender Database
Items in Ain Shams Scholar are protected by copyright, with all rights reserved, unless otherwise indicated.