scholarly journals A bi-foraminal craniometric-guided approach to endoscopic third ventriculostomy and biopsy of a pineal tumour

2021 ◽  
Vol 12 ◽  
pp. 582
Author(s):  
Panduranga Seetahal-Maraj ◽  
Patrick Knight ◽  
Narindra Ramnarine
Keyword(s):  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Third Ventriculostomy ◽  
Tumor Biopsy ◽  
Foramen Of Monro ◽  
Pineal Tumour ◽  
Pineal Tumors ◽  
Endoscopic Techniques ◽  
Intracranial Lesions

Background: Pineal tumors are very rarely encountered, with an incidence of <1% of intracranial lesions in adults. Life-threatening hydrocephalus due to obstruction of the third ventricle can result from the location of these tumours. Endoscopic third ventriculostomy (ETV) and tumor biopsy is a safe and feasible strategy, particularly if the tumor appears benign. This mitigates the high risks of uncontrollable venous bleeding from open and stereotactic biopsies. While typically performed using either ipsilateral single or dual bur holes, the location of the tumor may require modifications to the standard endoscopic techniques. Case Description: A 55-year-old male presented with signs of intracranial hypertension and was found to have obstructive hydrocephalus due to a pineal tumour. The tumour displayed a right-sided dominance when the pre-operative imaging was assessed, which would risk forniceal injury if biopsied via a right-sided burr hole. Craniometric measurements revealed a superior trajectory to the tumour via the left foramen of Monro. A biforaminal approach was performed, with a traditional ETV using a right coronal bur hole and biopsy via a left frontal bur hole. This minimized forniceal stretching and allowed a safe biopsy. Conclusion: The bi-foraminal approach has not been widely described in the literature but can potentially avoid morbidity with biopsy in patients with right-sided pineal tumours. We believe this technique should be considered, particularly in low-resource settings where neuroendoscopy is not commonly done, and where the use of ipsilateral single or dual-bur holes may lead to forniceal injury.

Three-Dimensional Simulation of Collision-Free Paths for Combined Endoscopic Third Ventriculostomy and Pineal Region Tumor Biopsy: Implications for the Design Specifications of Future Flexible Endoscopic Instruments

2015 ◽  
Vol 12 (3) ◽  
pp. 231-238 ◽  
Author(s):  
Kyle W Eastwood ◽  
Vivek P Bodani ◽  
James M Drake
Keyword(s):  
Software Package ◽  
Endoscopic Third Ventriculostomy ◽  
Third Ventricle ◽  
Three Dimensional ◽  
Pineal Region ◽  
Third Ventriculostomy ◽  
Tumor Biopsy ◽  
Foramen Of Monro ◽  
Tumor Margin ◽  
Pineal Region Tumor

Abstract BACKGROUND Recent innovations to expand the scope of intraventricular neuroendoscopy have focused on transitioning multiple-incision procedures into single-corridor approaches. However, the successful adoption of these combined procedures requires minimizing the unwanted torques applied to surrounding healthy structures. OBJECTIVE To define the geometry of relevant anatomical structures in endoscopic third ventriculostomy (ETV) and pineal region tumor biopsy (ETB). Second, to determine the optimal instrument shaft path required for collision-free single burr hole combined ETV/ETB. METHODS Magnetic resonance and computed tomography data from 15 pediatric patients who underwent both ETV and ETB procedures between 2006 and 2014 was segmented by using the 3DSlicer software package to create virtual 3-D patient models. Anatomical regions of interest were measured including the foramen of Monro, the massa intermedia, the floor of the third ventricle, and the tumor margin. Utilizing the MATLAB software package, virtual dexterous instruments were inserted into the models and optimal dimensions were calculated. RESULTS The diameters of the foramen of Monro, massa intermedia (anterior-posterior, superior-inferior), anterior third ventricle, and tumor margin are 6.85, 4.01, 5.05, 14.2, and 28.5 mm, respectively. The average optimal burr placement was determined to be 22.5 mm anterior to the coronal and 30 mm lateral to the sagittal sutures. Optimal flexible instrument geometries for novel instruments were calculated. CONCLUSION We have established a platform for estimating the shape of novel curved dexterous instruments for collision-free targeting of multiple intraventricular points, which is both patient and tool specific and can be integrated with image guidance. These data will aid in developing novel dexterous instruments.

scholarly journals Effectiveness of Endoscopic Third Ventriculostomy in Obstructive Hydrocephalus of Different Etiology in Terms of Reduction of Ventricle Diameter

1969 ◽  
Vol 11 (4) ◽  
pp. 185-190
Author(s):  
Hamayun Tahir ◽  
Muhammad Ayaz ◽  
Mumtaz Ali ◽  
Naseer Hassan ◽  
Syed Nasir Shah ◽  
...  
Keyword(s):  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Case Series ◽  
Ventricular Volume ◽  
Third Ventriculostomy ◽  
Endoscopic Techniques ◽  
Case Series Study ◽  
3Rd Ventricle ◽  
The Difference

Background: Endoscopic techniques are now gaining insight into the management of various neurosurgical pathologies,including Endoscopic third ventriculostomy (ETV), which is a well-accepted technique for obstructive hydrocephalus of variousetiologies.Objective: To determine the effectiveness of endoscopic third ventriculostomy in obstructive hydrocephalus in terms of reductionof third ventricle diameter (width).Material and Method: This descriptive case series study was conducted at the Department of Neuro Surgery, Lady ReadingHospital, from January 2019 to December 2020. A total of 195 patients between age 1- 60 years meeting the inclusion criteriaunderwent endoscopic third ventriculostomy by a single expert neurosurgeon. Effectiveness of endoscopic third ventriculostomywas measured to reduce at least 1 mm or more from the baseline third ventricle diameter (width) after two months of surgery.Results: In our study, 127 (65.12%) patients were male, while 68 (34.87%) were Females. Mean, and S.D. forAge was as 30.05Years + 17.46.The Mean Baseline 3rd Ventricle Diameter was 5.218mm +1.1, whereas on 60th postoperative Day Follow Up, themean 3rd Ventricle Diameter was recorded as 4 .35mm +1.25. The difference in means between the two groups was 0.864 (pvalue<0.0001), which is statistically significant. Effectiveness of Endoscopic Third Ventriculostomy was recorded on 105 (53.84%)patients, whereas in 90 (46.15%) patients, Obstructive Hydrocephalus remained unchanged.Conclusion: Calculated volumetric measurements (e.g., width) from C.T. scans after successful third ventriculostomy can displaya demonstrable reduction in ventricular volume and help evaluate patients postoperatively.Keywords: ETV, Hydrocephalus, stereotactic.

scholarly journals Endoscopic fenestration at the splenial-habenular junctional area for symptomatic cavum and tumor at the foramen of Monro: case reports and anatomical review

2015 ◽  
Vol 122 (3) ◽  
pp. 504-510 ◽  
Author(s):  
Zamzuri Idris ◽  
Jason Raj Johnson ◽  
Jafri Malin Abdullah
Keyword(s):  
Endoscopic Third Ventriculostomy ◽  
Case Reports ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Third Ventriculostomy ◽  
Csf Flow ◽  
Foramen Of Monro ◽  
The Third ◽  
Quadrigeminal Cistern ◽  
Endoscopic Fenestration

The splenial-habenular junctional area is an alternative site for neuroendoscopic fenestration to divert CSF flow into the quadrigeminal cistern in cases in which endoscopic third ventriculostomy is not amenable. In some patients with obstructive hydrocephalus, the splenium of the corpus callosum can be elevated from the habenular complex. This exposes the membranous connection between the splenium and habenula, which can be fenestrated to divert the CSF flow into the quadrigeminal cistern. This technique can be performed in patients in whom the foramen of Monro or the third ventricle is blocked by a lesion. Here, the authors present 3 complex cases that were managed by neuronavigation-guided transventricular transcavum endoscopic fenestration of the splenial-habenular junctional area. These cases may increase the knowledge and understanding of the anatomy of this region.

Endoscopic third ventriculostomy in obstructive hydrocephalus due to giant basilar artery aneurysm

2009 ◽  
Vol 110 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Joachim M. K. Oertel ◽  
Yvonne Mondorf ◽  
Michael R. Gaab
Keyword(s):  
Basilar Artery ◽  
Endoscopic Treatment ◽  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Clinical Signs ◽  
Artery Aneurysm ◽  
Third Ventriculostomy ◽  
Upward Displacement ◽  
Age Range

Obstructive hydrocephalus due to giant basilar artery (BA) aneurysm is a rare finding, and endoscopic treatment has not been reported. Here the authors present their experience with endoscopic third ventriculostomy (ETV) in obstructive hydrocephalus due to giant BA aneurysm. Between December 2000 and March 2007, 3 patients (2 men and 1 woman; age range 32–80 years) underwent an ETV for the treatment of obstructive hydrocephalus caused by a giant BA aneurysm. All 3 patients presented with cephalgia, nausea, vomiting, and a variable decrease in consciousness. An obstructive hydrocephalus caused by a giant BA aneurysm was found in each case as the underlying pathological entity. Intraoperatively, a narrowing of the third ventricle by upward displacement of the tegmentum was found in all 3 patients. A standard ETV was performed and included an inspection of the prepontine cisterns. The endoscopic treatment was successful in all patients with respect to clinical signs and radiological ventricular enlargement. No complications were observed. In all, the endoscopic ventriculostomy was proven to be a successful treatment option in obstructive hydrocephalus even if it is caused by untreated giant BA aneurysm.

Amenorrhea complicating endoscopic third ventriculostomy in the pediatric age group

2011 ◽  
Vol 8 (3) ◽  
pp. 325-328 ◽  
Author(s):  
Steven W. Hwang ◽  
George Al-Shamy ◽  
William E. Whitehead ◽  
Daniel J. Curry ◽  
Robert Dauser ◽  
...  
Keyword(s):  
Adolescent Girls ◽  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Third Ventriculostomy ◽  
Endocrine Regulation ◽  
Endocrine Dysfunction ◽  
Laboratory Findings ◽  
Pediatric Age Group ◽  
Hypothalamic Pituitary Axis

Endoscopic third ventriculostomy (ETV) is an accepted option in the treatment of obstructive hydrocephalus in children and is considered by many pediatric neurosurgeons to be the treatment of choice in this population. The procedure involves perforation of the floor of the third ventricle, specifically, the tuber cinereum, which is part of the hypothalamic-pituitary axis of cerebral endocrine regulation. Endocrine dysfunction, such as amenorrhea, weight gain, and precocious puberty, which are recognized only months to years after the procedure, may be underreported because patients and physicians may not relate the endocrine sequelae to the ETV. Few detailed reports of endocrinerelated complications following ETV exist to better understand these issues. In this study, the authors add to the literature with case descriptions of and correlative laboratory findings in 2 adolescent girls who underwent ETV for obstructive hydrocephalus and in whom amenorrhea subsequently developed.

scholarly journals Fatal subarachnoid hemorrhage after endoscopic third ventriculostomy

1999 ◽  
Vol 6 (4) ◽  
pp. E6 ◽  
Author(s):  
Henry W. S. Schroeder ◽  
Rolf W. Warzok ◽  
Jamal A. Assaf ◽  
Michael R. Gaab
Keyword(s):  
Subarachnoid Hemorrhage ◽  
Computerized Tomography ◽  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Balloon Catheter ◽  
External Ventricular Drainage ◽  
Third Ventriculostomy ◽  
Safe Procedure ◽  
Tomography Scanning

In recent years, endoscopic third ventriculostomy has become a well-established procedure for the treatment of various forms of noncommunicating hydrocephalus. Endoscopic third ventriculostomy is considered to be an easy and safe procedure. Complications have rarely been reported in the literature. The authors present a case in which the patient suffered a fatal subarachnoid hemorrhage (SAH) after endoscopic third ventriculostomy. This 63-year-old man presented with confusion and drowsiness and was admitted in to the hospital in poor general condition. Computerized tomography scanning revealed an obstructive hydrocephalus caused by a tumor located in the cerebellopontine angle. An endoscopic third ventriculostomy was performed with the aid of a Fogarty balloon catheter. Some hours postoperatively, the patient became comatose. Computerized tomography scanning revealed a severe perimesencephalic-peripontine SAH and progressive hydrocephalus. Despite emergency external ventricular drainage, the patient died a few hours later. Although endoscopic third ventriculostomy is considered to be a simple and safe procedure, one should be aware that severe and sometimes fatal complications may occur. To avoid vascular injury, perforation of the floor of the third ventricle should be performed in the midline, halfway between the infundibular recess and the mamillary bodies, just behind the dorsum sellae.

scholarly journals Combined rigid and flexible endoscopy for tumors in the posterior third ventricle

2015 ◽  
Vol 122 (6) ◽  
pp. 1341-1346 ◽  
Author(s):  
Jonathan Roth ◽  
Shlomi Constantini
Keyword(s):  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Choroid Plexus Papilloma ◽  
Flexible Endoscopy ◽  
Endoscopic Biopsy ◽  
Third Ventriculostomy ◽  
Low Grade ◽  
Rigid Endoscope ◽  
Ventricular Tumors

OBJECT Tumors leading to occlusion of the sylvian aqueduct include those of pineal, thalamic, and tectal origins. These tumors cause obstructive hydrocephalus and thus necessitate a CSF diversion procedure such as an endoscopic third ventriculostomy (ETV), often coupled with an endoscopic biopsy (EBX). Lesions located posterior to the massa intermedia pose a technical challenge, as the use of a rigid endoscope for performing both an ETV and EBX is limited. The authors describe their experience using a combined rigid and flexible endoscopic procedure through a single bur hole for both procedures in patients with posterior third ventricular tumors. METHODS Since January 2012, patients with posterior third ventricular tumors causing hydrocephalus underwent dual ETV and EBX procedures using the combined rigid-flexible endoscopic technique. Following institutional review board approval, data from clinical, radiological, surgical, and pathological records were retrospectively collected. RESULTS Six patients 3.5–53 years of age were included. Lesion locations included pineal (n = 3), fourth ventricle (n = 1), aqueduct (n = 1), and tectum (n = 1). The ETV and EBX were successful in all cases. Pathologies included pilocytic astrocytoma, pineoblastoma, ependymoma Grade II, germinoma, low-grade glioneural tumor, and atypical choroid plexus papilloma. One patient experienced an immediate postoperative intraventricular hemorrhage necessitating evacuation of the clots and resection of the tumor, eventually leading to the patient's death. CONCLUSIONS The authors recommend using a combined rigid-flexible endoscope for endoscopic third ventriculostomy and biopsy to approach posterior third ventricular tumors (behind the massa intermedia). This technique overcomes the limitations of using a rigid endoscope by reaching 2 distant regions.

Three-dimensional constructive interference in steady-state magnetic resonance imaging in obstructive hydrocephalus: relevance for endoscopic third ventriculostomy and clinical results

2008 ◽  
Vol 109 (5) ◽  
pp. 931-938 ◽  
Author(s):  
Mathias Kunz ◽  
Gernot Schulte-Altedorneburg ◽  
Eberhard Uhl ◽  
Robert Schmid-Elsaesser ◽  
Karsten Schöller ◽  
...  
Keyword(s):  
Mr Imaging ◽  
Endoscopic Third Ventriculostomy ◽  
Clinical Course ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Three Dimensional ◽  
Third Ventriculostomy ◽  
Constructive Interference ◽  
The Third ◽  
Flow Void

Object Endoscopic third ventriculostomy is the treatment of choice in patients with obstructive hydrocephalus caused by aqueductal stenosis. The authors examined the clinical course and results of surgical treatment for obstructive hydrocephalus with pre- and postoperative refined constructive interference in steady-state (CISS) MR imaging. Methods Forty patients with obstructive hydrocephalus underwent pre- and postoperative 3D-CISS imaging and clinical evaluation. Radiological findings were correlated with intraoperative observations of the thickness and transparency of the floor of the third ventricle and the patient's postoperative clinical course. Results Three-dimensional CISS MR imaging provides precise visualization of the basilar/posterior cerebral artery, its distance to the clivus, the diameter of the foramen of Monro, and the extension of and thickness of the floor of the third ventricle. In 71% of patients a flow void was detectable postoperatively on the ventriculostomy. In this group 81.5% had strong and 14.8% moderate clinical benefit, and 3.7% required secondary shunt placement. In the remaining 29% of the patients without a visible flow void, strong improvement was seen in 54.5%, moderate improvement in 18.2%, and stoma failure occurred in 27.3% (p = 0.094). Radiological measurements of the thickness of the third ventricle floor correlated with intraoperative findings (r = 0.35, p = 0.029). Comparison of outcomes showed a statistically significant tendency for a better outcome in patients with thin and easily perforated third ventricle floors (p = 0.04). Conclusions Endoscopic ventriculostomy in patients with obstructive hydrocephalus is safe and mostly successful, and 3D-CISS MR imaging seems to be a valuable diagnostic method for precisely identifying the anatomy of relevant structures. Furthermore, 3D-CISS MR imaging allows judgment of the thickness of the third ventricle floor and display of the ventriculostomy/flow void, which are predictive for intraoperative course and clinical outcome.

scholarly journals Endoscopic third ventriculostomy

2005 ◽  
Vol 19 (6) ◽  
pp. 1-4 ◽  
Author(s):  
George I. Jallo ◽  
Karl F. Kothbauer ◽  
I. Rick Abbott
Keyword(s):  
Endoscopic Third Ventriculostomy ◽  
Obstructive Hydrocephalus ◽  
Third Ventricle ◽  
Significant Advance ◽  
Third Ventriculostomy ◽  
Successful Completion ◽  
Traditional Treatment ◽  
The Third ◽  
Technological Advances ◽  
Third Ventricle Floor

The traditional treatment for all forms of hydrocephalus has been the implantation of ventricular shunt systems; however, these systems have inherent tendencies toward complications such as malfunction and infection. A significant advance in the treatment of hydrocephalus has been the evolution of endoscopy. The recent technological advances in this field have led to a renewed interest in endoscopic third ventriculostomy as the treatment of choice for obstructive hydrocephalus. Although several different endoscopes are available, the authors favor a rigid one to perform a blunt fenestration of the third ventricle floor. This description of the technique stresses the nuances for successful completion of this procedure.

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