scholarly journals Cerebellar, Fourth Ventricle, and Brain Stem Ependymal Tumor

2020 ◽  
Author(s):  
Keyword(s):  
Brain Stem ◽  
Fourth Ventricle ◽  
Ependymal Tumor

Endoscopic high occipital interhemispheric transtentorial approach for lesions in the anterosuperior cerebellum, upper fourth ventricle, and upper dorsal brain stem

2021 ◽  
Author(s):  
Motoki Tanikawa ◽  
Tomohiro Sakata ◽  
Hiroshi Yamada ◽  
Hatsune Kawase-Kamikokura ◽  
Kazuya Ohashi ◽  
...  
Keyword(s):  
Brain Stem ◽  
Fourth Ventricle ◽  
Transtentorial Approach

Surgical treatment of the tumors of the fourth ventricle through telovelar approach

2018 ◽  
Vol 20 (2) ◽  
pp. 8-16 ◽  
Author(s):  
A. V. Kalinovskiy ◽  
S. V. Chernov ◽  
A. V. Zotov ◽  
A. R. Kasymov ◽  
E. V. Gormolysova ◽  
...  
Keyword(s):  
Surgical Treatment ◽  
Brain Stem ◽  
Fourth Ventricle ◽  
Radical Resection ◽  
Adult Patients ◽  
Study Objective ◽  
Results Of Treatment ◽  
Telovelar Approach ◽  
Ventricular Tumors

The study objectiveis analysis of surgical treatment results of adult patients with tumors of the fourth ventricle and determination of predictors of unsuccessful outcomes.Materials and methods.In the present study we review results of treatment of 33 adult patients with tumors of the fourth ventricle, which were operated via telovelar approach in Federal Neurosurgical Center (Novosibirsk). The most common symptoms included hydrocephalus (54.5 %), cerebellar dysfunction (33.3 %), cranial nerve deficits (30.3 %). The tumor size was more than 40 mm in 22 cases (66.7 %). The brain stem invasion was occurred in 21 cases (63.6 %).Results.23 tumors were removed totally (69.7 %). Hydrocephalus was regressed in 17 cases (94.5 %). Cerebellar mutism did not occur in any patient. Conclusion.Predictors of poor result may be brain stem invasion, non-radical resection of tumor and preoperative hydrocephalus. We suggest, that the preoperative hydrocephalus should not been operated in the most cases of the fourth ventricular tumors.

Intraoperative identification of motor areas of the rhomboid fossa using direct stimulation

1993 ◽  
Vol 79 (3) ◽  
pp. 393-399 ◽  
Author(s):  
Christian Strauss ◽  
Johann Romstöck ◽  
Christopher Nimsky ◽  
Rudolf Fahlbusch
Keyword(s):  
Brain Stem ◽  
Fourth Ventricle ◽  
Complete Removal ◽  
Direct Stimulation ◽  
Content Type ◽  
Rhomboid Fossa ◽  
Stem Lesions ◽  
Mass Lesions ◽  
The Brain ◽  
Motor Areas

✓ Intraoperative electrical identification of motor areas within the floor of the fourth ventricle was successfully carried out in a series of 10 patients with intrinsic pontine lesions and lesions infiltrating the brain stem. Direct electrical stimulation was used to identify the facial colliculus and the hypoglossal triangle before the brain stem was entered. Multichannel electromyographic recordings documented selective stimulation effects. The surgical approach to the brain stem was varied according to the electrical localization of these structures. During removal of the lesion, functional integrity was monitored by intermittent stimulation. In lesions infiltrating the floor of the fourth ventricle, stimulation facilitated complete removal. Permanent postoperative morbidity of facial or hypoglossal nerve dysfunction was not observed. Mapping of the floor of the fourth ventricle identifies important surface structures and offers a safe corridor through intact nervous structures during surgery of brain-stem lesions. Reliable identification is particularly important in mass lesions with displacement of normal topographical anatomy.

Surgical treatment for choroid plexus tumors in the fourth ventricle: brain stem infiltration hinders total extirpation

2007 ◽  
Vol 31 (2) ◽  
pp. 165-172 ◽  
Author(s):  
Toshihiro Kumabe ◽  
Miki Fujimura ◽  
Hidefumi Jokura ◽  
Teiji Tominaga
Keyword(s):  
Surgical Treatment ◽  
Brain Stem ◽  
Choroid Plexus ◽  
Fourth Ventricle ◽  
Choroid Plexus Tumors
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