scholarly journals Quadrigeminal plate lipoma

2013 ◽  
Author(s):  
Mostafa El-Feky ◽  
M Venkatesh
Keyword(s):  
Quadrigeminal Plate

scholarly journals Third Ventricular and Interpeduncular Fossa Tubercular Abscess With Triventriculomegaly - Ventriculoscopic Surgical Management

2013 ◽  
Vol 14 (1) ◽  
pp. 72-73 ◽  
Author(s):  
Forhad Hossain Chowdhury ◽  
Mohammod Raziul Haque ◽  
Mohammod Sarwar Morshed Alam
Keyword(s):  
Central Nervous System ◽  
Preoperative Diagnosis ◽  
Cerebellopontine Angle ◽  
Surgical Planning ◽  
Cerebral Hemispheres ◽  
Third Ventriculostomy ◽  
Optic Pathway ◽  
Cns Involvement ◽  
Quadrigeminal Plate ◽  
Orbital Region

Intracranial tuberculomas are rather common lesions in developing world.Tuberculomas are usually located in cerebellum, basal ganglia and cerebral hemispheres, particularly in frontoparietal region.Less common sites include the corpus callosum, quadrigeminal plate,the cerebellopontine angle, the retro-orbital region, the anterior optic pathway and the supraseller region.The central nervous system (CNS) involvement comprises approximately 10–15% of all tuberculous infections. Brain tuberculosis is usually parenchymal. Intraventricular tuberculosis is very rare and only little number of cases has been reported. Intraventricular tubercular abscess is further rarer. Here we report a case of third ventricular tubercular abscess with triventriculomegaly that was managed by ventriculoscopic drainage and third ventriculostomy though preoperative diagnosis & surgical planning was different. DOI: http://dx.doi.org/10.3329/jom.v14i1.11415 J MEDICINE 2013; 14 : 72-73

Surgical management of pineal region lesions

2019 ◽  
pp. 439-446
Author(s):  
Christoph M. Woernle ◽  
René L. Bernays ◽  
Nicolas de Tribolet
Keyword(s):  
Third Ventricle ◽  
Pineal Region ◽  
Cerebral Veins ◽  
Internal Cerebral Veins ◽  
Supracerebellar Infratentorial Approach ◽  
Occipital Transtentorial Approach ◽  
Basal Vein Of Rosenthal ◽  
Third Ventricle Tumours ◽  
Quadrigeminal Plate ◽  
The Brain

Lesions in the pineal region are topographically located in the centre of the brain in the diencephalic-epithalamic region. An area where the brain is bounded ventrally by the quadrigeminal plate, midbrain tectum, and in-between the left and right superior colliculi, dorsally by the splenium of the corpus callosum, caudally by the cerebellar vermis and rostrally by the posterior aspects of the third ventricle. Major anatomical and surgical challenges are the vein of Galen located dorsally, the precentral cerebellar vein caudally, the internal cerebral veins anteriorly and the basal vein of Rosenthal laterally. Most pineal region tumours can be safely removed by both approaches depending on the surgeon’s experience: the occipital transtentorial approach is recommended in presence of associated hydrocephalus or a steep straight sinus and low location of the tumour and the supracerebellar infratentorial approach for posterior third ventricle tumours.

Lipoma of the quadrigeminal plate

2012 ◽  
Vol 1 (1) ◽  
pp. 51
Author(s):  
BE Panil Kumar ◽  
Amit Agrawal ◽  
KishoreV Hegde
Keyword(s):  
Quadrigeminal Plate

Spontaneous Resolution of Cavum Veli Interpositi

2008 ◽  
Vol 21 (6) ◽  
pp. 805-809
Author(s):  
S. Vattoth ◽  
Y.S. Kim ◽  
E. Norman ◽  
G.H. Roberson
Keyword(s):  
Case Reports ◽  
Third Ventricle ◽  
Septum Pellucidum ◽  
Spontaneous Resolution ◽  
Cerebral Veins ◽  
Cavum Septum Pellucidum ◽  
Internal Cerebral Veins ◽  
Cavum Veli Interpositi ◽  
Quadrigeminal Plate ◽  
Forward Extension

Cavum veli interpositi is an open CSF space in the roof of the third ventricle that surrounds the internal cerebral veins, and is a forward extension of the quadrigeminal plate cistern. To the best of our knowledge, spontaneous resolution of a cavum veli interpositi has not been reported in the literature to date. Interestingly, case reports of spontaneous resolution of cystic cavum septum pellucidum in three patients and eighteen arachnoid cyst cases has been described in the literature. We describe the spontaneous resolution of a cavum veli interpositi or cyst in cavum veli interpositi in a 35-year-old man and review the literature of spontaneous resolution of cavum septum pellucidum and arachnoid cysts.

Microsurgical Approaches to the Medial Temporal Region: An Anatomical Study

2006 ◽  
Vol 59 (suppl_4) ◽  
pp. ONS-279-ONS-308 ◽  
Author(s):  
Alvaro Campero ◽  
Gustavo Tro´ccoli ◽  
Carolina Martins ◽  
Juan C. Fernandez-Miranda ◽  
Alexandre Yasuda ◽  
...  
Keyword(s):  
Anatomical Study ◽  
Middle Part ◽  
Surgical Anatomy ◽  
Surgical Approaches ◽  
Temporal Region ◽  
Anterior Portion ◽  
Posterior Portion ◽  
Medial Surface ◽  
Posterior Group ◽  
Quadrigeminal Plate

Abstract OBJECTIVE: To describe the surgical anatomy of the anterior, middle, and posterior portions of the medial temporal region and to present an anatomic-based classification of the approaches to this area. METHODS: Twenty formalin-fixed, adult cadaveric specimens were studied. Ten brains provided measurements to compare different surgical strategies. Approaches were demonstrated using 10 silicon-injected cadaveric heads. Surgical cases were used to illustrate the results by the different approaches. Transverse lines at the level of the inferior choroidal point and quadrigeminal plate were used to divide the medial temporal region into anterior, middle, and posterior portions. Surgical approaches to the medial temporal region were classified into four groups: superior, lateral, basal, and medial, based on the surface of the lobe through which the approach was directed. The approaches through the medial group were subdivided further into an anterior approach, the transsylvian transcisternal approach, and two posterior approaches, the occipital interhemispheric and supracerebellar transtentorial approaches. @@RESULTS:@@ The anterior portion of the medial temporal region can be reached through the superior, lateral, and basal surfaces of the lobe and the anterior variant of the approach through the medial surface. The posterior group of approaches directed through the medial surface are useful for lesions located in the posterior portion. The middle part of the medial temporal region is the most challenging area to expose, where the approach must be tailored according to the nature of the lesion and its extension to other medial temporal areas. CONCLUSION: Each approach to medial temporal lesions has technical or functional drawbacks that should be considered when selecting a surgical treatment for a given patient. Dividing the medial temporal region into smaller areas allows for a more precise analysis, not only of the expected anatomic relationships, but also of the possible choices for the safe resection of the lesion. The systematization used here also provides the basis for selection of a combination of approaches.

Pathogenesis of aqueductal occlusion in congenital murine hydrocephalus

1976 ◽  
Vol 45 (1) ◽  
pp. 66-77 ◽  
Author(s):  
Anthony J. Raimondi ◽  
Sandra J. Clark ◽  
David G. McLone
Keyword(s):  
Brain Stem ◽  
Brain Structures ◽  
Aqueductal Stenosis ◽  
Brain Shift ◽  
Ventricular Dilation ◽  
Content Type ◽  
Quadrigeminal Plate ◽  
Stage 1 ◽  
Relationship Of ◽  
The Relationship

✓ In a study of congenital hydrocephalus in the murine mutant (hy-3/hy-3), the authors found that aqueductal stenosis develops during the progression of hydrocephalus. In Stage 1 hydrocephalus (ventricular dilation and open aqueduct), a block in the subarachnoid space over the cerebral convexities causes the lateral and third ventricles to enlarge. The ependyma becomes stretched and a collection of edematous fluid forms in the subependymal layer. In Stage 2 hydrocephalus (edema in white matter around lateral ventricles and compression of quadrigeminal plate), edema develops peripheral to ependyma in the aqueduct and compresses the lateral surfaces of the aqueductal wall to obstruct the lumen. While periaqueductal edema is spreading, the forces of the expanding midline structures and the cystic occipital horns alter the relationship of brain structures. There is no proliferation of glia, but, rather, a “simple stenosis” which results from a combination of ventricular dilation, cerebral edema, brain shift, brain-stem compression, and brain-stem edema. In this study, normal ependymal specializations were observed that indicate a more active functional role for aqueductal ependyma than previously recognized.

Subtemporal Approach To The Tentorial Incisura: Normative Morphometric Data Based On Magnetic Resonance Imaging Scans

2006 ◽  
Vol 58 (suppl_1) ◽  
pp. ONS-22-ONS-28 ◽  
Author(s):  
Ardeshir Ardeshiri ◽  
Ardavan Ardeshiri ◽  
Emanuel Wenger ◽  
Markus Holtmannspötter ◽  
Peter A. Winkler
Keyword(s):  
Temporal Lobe ◽  
Middle Cranial Fossa ◽  
Axial Section ◽  
Subtemporal Approach ◽  
Rapid Acquisition ◽  
Coronal Section ◽  
Quadrigeminal Plate ◽  
Surgical Corridor ◽  
Tentorial Incisura ◽  
Tentorial Notch

Abstract OBJECTIVE: The tentorial notch can be contained within a transversal line made in front of the cerebral peduncles and another line through the posterior border of the quadrigeminal plate into the anterior, middle and posterior parts. Different approaches to the tentorial incisura have been established. The subtemporal approach represents one of those options. Since morphometrical analyses of this approach in this region have not yet been performed, the aim of the present study was to measure the surgical corridor along these borders. METHODS: Fifty-three magnetization prepared rapid acquisition gradient echo-sequences of individual brains without pathological lesions were analyzed. For this study, an axial section along the pontomesencephalic sulcus and two coronal sections along the above-described borders were measured using a program specially written by one of the coauthors to obtain various parameters. A triangle circumscribing the surgical corridor was delimited by exactly defined anatomic landmarks for the coronal section, and the depths of the temporal lobe at the incisural borders were measured for the axial section. RESULTS: Various data are given concerning the surgical corridor of a subtemporal approach to the tentorial incisura. The different shapes of this corridor to the incisural region were recorded. According to our measurements, four different types of the temporal lobe could be differentiated. CONCLUSION: Knowledge of these distances and various contours of the path is crucial to avoid brain damage during retraction or manipulation. The curvature of the floor of the middle cranial fossa is highly variable and thus determines the surgical path chosen.

Ependymal Cyst of the Quadrigeminal Plate: Case Report

Neurosurgery ◽  
1985 ◽  
Vol 16 (1) ◽  
pp. 96-99 ◽  
Author(s):  
Raphael P. Davis ◽  
Ved P. Sachdev ◽  
Michael Sachar
Keyword(s):  
Case Report ◽  
Ependymal Cyst ◽  
Quadrigeminal Plate
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