scholarly journals Gross total resection of intracisternal accessory nerve schwannomas using a familiar midline suboccipital subtonsilar approach

2019 ◽  
Vol 2019 (7) ◽  
Author(s):  
Elias Antoniades ◽  
Alkinoos Athanasiou ◽  
Panagiotis Sarlis ◽  
Ioannis Magras ◽  
Ioannis Patsalas
Keyword(s):  
Relevant Literature ◽  
Accessory Nerve ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Cerebrospinal Fluid Leakage ◽  
Spinal Root ◽  
Total Resection ◽  
Suboccipital Craniotomy ◽  
Rare Lesion ◽  
Chronic Headaches

Abstract Background Intracisternal Accessory Nerve Schwannomas (ANS) constitute a rare clinical entity with only a few cases reported so far. Their symptoms are usually due to brainstem compression and not manifested until they render of great size. Secondary neuropathy and muscle atrophy are other late signs. The hitherto reported literature advocates a suboccipital craniotomy as a suitable approach. In most of the cases the spinal root was the location tumor arose from. Gross total resection was possible to be carried out in most cases with only sporadic tolerable postoperative deficits reported. Case description We hereby present three cases of patients with intracisternal ANS treated in the same fashion. Two patients were male and one female. Two patients complained of mainly chronic headaches and neck pain, whereas in the third patient the lesion was found incidentally. Only one patient suffered post-operatively cerebrospinal fluid leakage and wound healing complication, which was treated with revision surgery and administration of antibiotics. None of the patients had postoperative neurological deficits. Furthermore, we conducted a review of the relevant literature where we noted that there is no consensus yet with regards to the appropriate surgical approach. Conclusions Based on relevant anatomical studies, we advocate that suboccipital subtonsilar approach provides a wide corridor to the area of lesion allowing complete and safe resection of intracisternal ANS. We thus support that, in most cases, the neurosurgeon should consider using this familiar approach for treating this rare lesion.

scholarly journals Cardiac phoenix in the brain-occult intracranial hemorrhagic metastases from completely resected atrial myxoma

2020 ◽  
Vol 11 ◽  
pp. 383
Author(s):  
Sagar Amrutlal Ghodasara ◽  
Rohit Balasubramanian ◽  
Shriram Varadharajan ◽  
P. S. Shobhanaa
Keyword(s):  
Cerebral Cortex ◽  
Cardiac Myxoma ◽  
Surgical Excision ◽  
Atrial Myxoma ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Surgical Removal ◽  
Early Recovery ◽  
Total Resection ◽  
Tumor Embolization

Background: Cardiac myxomas are sporadic in nature and can often recur with a frequency of 3%, especially in middle-aged women, and 22% of the cases account to a part of Carney complex. Complete surgical removal of the myxoma is usually curative. Recurrence has been related with partial surgical excision, multicentricity, and embolism of tumor fragments. Case Description: We report a case of a patient with single brain metastases due to tumor embolization, from a cardiac myxoma operated prior. This case is exclusive, as tumor embolization from atrial myxoma to the cerebral cortex can be possible, within a short duration. In our case, the patient was evaluated with a magnetic resonance imaging brain and a solitary hemorrhagic lesion in the eloquent cerebral cortex was observed. To determine the primary etiology, the diagnosis of probable metastases was thought of, and a thorough workup was planned. Surprisingly, no primary lesion was detected, and as a histological diagnosis was required, he underwent a navigation-guided excisional biopsy of lesion. The biopsy was indicative of a metastatic deposit from an atrial myxoma. Conclusion: In eloquent cortex lesions, gross total resection is challenging for a neurosurgeon especially when the patient has no significant neurological deficits. Timely gross total resection of a solitary metastatic lesion can improve the patient’s outcome and can enhance early recovery with less or no morbidity.

Gross Total Resection Rates in Contemporary Glioblastoma Surgery

Neurosurgery ◽  
2012 ◽  
Vol 71 (5) ◽  
pp. 927-936 ◽  
Author(s):  
Philippe Schucht ◽  
Jürgen Beck ◽  
Janine Abu-Isa ◽  
Lukas Andereggen ◽  
Michael Murek ◽  
...  
Keyword(s):  
Aminolevulinic Acid ◽  
Complete Resection ◽  
High Rate ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Total Resection ◽  
Glioma Surgery ◽  
Intraoperative Mapping ◽  
Number Of Patients ◽  
The Impact

Abstract BACKGROUND: Complete resection of contrast-enhancing tumor has been recognized as an important prognostic factor in patients with glioblastoma and is a primary goal of surgery. Various intraoperative technologies have recently been introduced to improve glioma surgery. OBJECTIVE: To evaluate the impact of using 5-aminolevulinic acid and intraoperative mapping and monitoring on the rate of complete resection of enhancing tumor (CRET), gross total resection (GTR), and new neurological deficits as part of an institutional protocol. METHODS: One hundred three consecutive patients underwent resection of glioblastoma from August 2008 to November 2010. Eligibility for CRET was based on the initial magnetic resonance imaging assessed by 2 reviewers. The primary end point was the number of patients with CRET and GTR. Secondary end points were volume of residual contrast-enhancing tissue and new postoperative neurological deficits. RESULTS: Fifty-three patients were eligible for GTR/CRET (n = 43 newly diagnosed glioblastoma, n = 10 recurrent); 13 additional patients received surgery for GTR/CRET-ineligible glioblastoma. GTR was achieved in 96% of patients (n = 51, no residual enhancement > 0.175 cm3); CRET was achieved in 89% (n = 47, no residual enhancement). Postoperatively, 2 patients experienced worsening of preoperative hemianopia, 1 patient had a new mild hemiparesis, and another patient sustained sensory deficits. CONCLUSION: Using 5-aminolevulinic acid imaging and intraoperative mapping/monitoring together leads to a high rate of CRET and an increased rate of GTR compared with the literature without increasing the rate of permanent morbidity. The combination of safety and resection-enhancing intraoperative technologies was likely to be the major drivers for this high rate of CRET/GTR.

Treatment-related morbidity and the management of pediatric craniopharyngioma

2012 ◽  
Vol 10 (4) ◽  
pp. 293-301 ◽  
Author(s):  
Aaron J. Clark ◽  
Tene A. Cage ◽  
Derick Aranda ◽  
Andrew T. Parsa ◽  
Kurtis I. Auguste ◽  
...  
Keyword(s):  
Radiation Treatment ◽  
Treatment Strategies ◽  
Extent Of Resection ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Benign Tumors ◽  
Subtotal Resection ◽  
Total Resection ◽  
Anatomical Relationship ◽  
Vascular Structures

Object Craniopharyngiomas are benign tumors but their close anatomical relationship with critical neurological, endocrine, and vascular structures makes gross-total resection (GTR) with minimal morbidity difficult to achieve. Currently, there is controversy regarding the extent, timing, and modality of treatment for pediatric craniopharyngioma. Methods The authors performed a systematic review of the published literature on pediatric craniopharyngioma to determine patterns of clinical practice and the reported outcomes of standard treatment strategies. This yielded 109 studies, which contained data describing extent of resection for a total of 531 patients. Differences in outcome were examined based upon extent of resection and choice of radiation treatment. Results Gross-total resection was associated with increased rates of new endocrine dysfunction (OR 5.4, p < 0.001), panhypopituitarism (OR 7.8, p = 0.006), and new neurological deficits (OR 9.9, p = 0.03) compared with biopsy procedures. Subtotal resection (STR) was not associated with an increased rate of new neurological deficits. Gross-total was associated with increased rates of diabetes insipidus (OR 7.7, p = 0.05) compared with the combination of STR and radiotherapy (RT). The addition of RT to STR was associated with increased rates of panhypopituitarism (OR 9.9, p = 0.01) but otherwise similar rates of morbidities. Conclusions Although subject to the limitations of a literature review, this report suggests that GTR is associated with increased rates of endocrinopathies compared with STR + RT, and this should be considered when planning goals of surgery.

Stereotactic Volumetric Resection of Thalamic Pilocytic Astrocytomas

Neurosurgery ◽  
2007 ◽  
Vol 61 (1) ◽  
pp. 66-75 ◽  
Author(s):  
Yaron A. Moshel ◽  
Michael J. Link ◽  
Patrick J. Kelly
Keyword(s):  
New York ◽  
Residual Tumor ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Surgical Approaches ◽  
New York University ◽  
Total Resection ◽  
Pilocytic Astrocytomas

Abstract OBJECTIVE To describe the surgical approaches, the radiographic and clinical outcomes, and the long-term follow-up of patients harboring thalamic pilocytic astrocytomas after radical resection by means of a stereotactic volumetric technique. METHODS Seventy-two patients with thalamic pilocytic astrocytomas underwent stereotactic volumetric resection by the senior author (PJK) at the Mayo Clinic between 1984 and 1993 (44 patients) and at New York University Medical Center between 1993 and 2005 (28 patients). Patient demographics, presenting symptoms, surgical approaches, neurological outcomes, pathology, initial postoperative status, and long-term clinical and radiographic follow-up were retrospectively reviewed. RESULTS On preoperative neurological examinations, 54 of the 72 patients had neurological deficits; of these, 48 had hemiparesis. Postoperative imaging demonstrated gross total resection in 58 patients and minimal (&lt;6 mm) residual tumor in 13 patients. Tumor resection was aborted in one patient. On immediate postoperative examination, 16 patients had significant improvements in hemiparesis. Six patients had worsening of a preexisting hemiparesis and one had a new transient postoperative hemiparesis. There was one postoperative death. After 13 to 20 years of follow-up in the Mayo group (mean, 15 ± 3 yr) and 1 to 13 years of follow-up in the New York University group (mean, 8 ± 3 yr), 67 patients were recurrence/progression-free, one had tumor recurrence, and three had progression of residual tumor. There were two shunt-related deaths. On long-term neurological follow-up, 27 patients had significant improvements in hemiparesis; one patient with a postoperative worsening of a preexisting hemiparesis remained unchanged. There were no patients with new long-term motor deficits after stereotactic resection. CONCLUSION Gross total removal of thalamic pilocytic astrocytomas with low morbidity and mortality can be achieved by computer-assisted stereotactic volumetric resection techniques. Gross total resection of these lesions confers a favorable long-term prognosis without adjuvant chemotherapy and/or radiation therapy and leads to the improvement of neurological deficits.

scholarly journals Intraventricular neuroepithelial tumors: Surgical outcome, technical considerations and review of literature

2020 ◽  
Author(s):  
Amir Kaywan Aftahy ◽  
Melanie Barz ◽  
Philipp Krauss ◽  
Friederike Liesche ◽  
Benedikt Wiestler ◽  
...  
Keyword(s):  
Postoperative Outcome ◽  
Retrospective Chart Review ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Surgical Approaches ◽  
Total Resection ◽  
Term Survival ◽  
Neuroepithelial Tumors ◽  
Glioependymal Cyst ◽  
Tertiary Center

Abstract Background: Intraventricular neuroepithelial tumors (IVT) are rare lesions and comprise different pathological entities such as ependymomas, subependymomas and central neurocytomas. The treatment of choice is neurosurgical resection, which can be challenging due to their intraventricular location. Different surgical approaches to the ventricles are described. Here we report a large series of IVTs, its postoperative outcome at a single tertiary center and discuss suitable surgical approaches. Methods: We performed a retrospective chart review at a single tertiary neurosurgical center between 03/2009-05/2019. We included patients that underwent resection of an IVT emphasizing on surgical approach, extent of resection, clinical outcome and postoperative complications.Results: 45 IVTs were resected from 03/2009 to 05/2019, 13 ependymomas, 21 subependymomas, 10 central neurocytomas and one glioependymal cyst. Median age was 52,5 years with 55.6% (25) male and 44.4% (20) female patients. Gross total resection was achieved in 93.3% (42/45). 84.6% (11/13) of ependymomas, 100% (12/21) of subependymomas, 90% (9/10) of central neurocytomas and one glioependymal cyst were completely removed. Postoperative rate of new neurological deficits was 26.6% (12/45). Postoperative new permanent cranial nerve deficits occurred in one case with 4th ventricle subependymoma and one in 4th ventricle ependymoma. Postoperative KPSS was 90% (IR 80-100). 31.1% of the patients improved in KPSS, 48.9% remained unchanged and 20% declined. Postoperative adverse events rate was 20.0%. Surgery-related mortality was 2.2%. The rate of shunt/cisternostomy-dependent hydrocephalus was 13.3% (6/45). 15.4% of resected ependymomas underwent adjuvant radiotherapy. Mean follow-up was 26,9 (±30.1) months.Conclusion: Our surgical findings emphasize satisfactory complete resection throughout all entities. Surgical treatment can remain feasible, if institutional experience is given. Satisfying long-term survival and cure is possible by complete removal. Gross total resection should always be performed under function-remaining aspects due to mostly benign or slow growing nature of IVTs. Further data is needed to evaluate standard of care and alternative therapy options in rare cases of tumor recurrence or in case of patient collective not suitable for operative resection.

Patient Outcome at Long-term Follow-up after Aggressive Microsurgical Resection of Cranial Base Chondrosarcomas

Neurosurgery ◽  
2006 ◽  
Vol 58 (6) ◽  
pp. 1090-1098 ◽  
Author(s):  
Fotios Tzortzidis ◽  
Foad Elahi ◽  
Donald C. Wright ◽  
Nancy Temkin ◽  
Sabareesh K. Natarajan ◽  
...  
Keyword(s):  
Cranial Base ◽  
Gross Total Resection ◽  
Cerebrospinal Fluid Leakage ◽  
Subtotal Resection ◽  
Incomplete Resection ◽  
Total Resection ◽  
Long Term Follow Up ◽  
Microsurgical Resection

Abstract OBJECTIVE: To evaluate patient clinical outcome and survival at long-term follow-up after aggressive microsurgical resection of chondrosarcomas of the cranial base. METHODS: Over a 20-year period, 47 patients underwent 72 operative procedures for resection of cranial base chondrosarcomas. Thirty-three patients were previously untreated, whereas 14 patients previously had undergone surgery or radiation. Twenty-three patients had a single operation and 24 underwent staged (more than one) operations because of extensive disease. Patients who underwent subtotal resection also underwent radiotherapy or radiosurgery. Patients were evaluated at follow-up clinically and by imaging studies. RESULTS: Gross total resection was accomplished in 29 (61.7%) patients, and subtotal resection was accomplished in 18 patients (38.3%). The resection was better in patients who underwent a primary operation (gross total resection, 68.8 versus 46.7%) rather than a reoperation. Patients who underwent incomplete resection underwent postoperative radiotherapy, which included proton beam radiotherapy (15.6%), radiosurgery (68%), and fractionated radiation (15.6%). There were no operative deaths. Postoperative complications (cerebrospinal fluid leakage, quadriparesis, infections, cranial nerve palsies, etc.) were observed in 10 patients (18%). The follow-up ranged from 2 to 255 months, with an average of 86 months. At the conclusion of study, 36 (76.6%) patients were alive, and 21 (44.7%) patients were alive without disease. Recurrence-free survival was 32% at 10 years in all patients, 42.3% in primary patients and 13.8% in those who underwent reoperation. The Karnofsky performance score was 82.4 ± 9.8 before surgery, 85 ± 12.5 at 1 year after surgery, and 85.3 ± 5.8 at the latest follow-up. Two patients died as a result of radiotherapy complications (malignancy, radiation necrosis). CONCLUSION: Cranial base chondrosarcomas can be managed well by complete surgical resection or by a combination of surgery and radiotherapy. The study cannot comment about the efficacy of radiotherapy. Approximately half of the patients survived without recurrence at long-term follow-up (&gt;132 mo). The functional status of the surviving patients was excellent at follow-up.

scholarly journals Retrosigmoid Approach for Resecting a Giant Lateral Pontine Ependymoma: Two-Dimensional Operative Video

2020 ◽  
Author(s):  
Hongxiang Wang ◽  
Yong Yan ◽  
Tao Xu ◽  
Juxiang Chen
Keyword(s):  
Brain Stem ◽  
Posterior Inferior Cerebellar Artery ◽  
Cranial Nerves ◽  
Retrosigmoid Approach ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Ependymal Cells ◽  
Total Resection ◽  
Petrosal Vein ◽  
Cerebellar Artery

AbstractEpendymoma is one of the most common pediatric tumors in central nervous system, for which gross total resection has been the most favorable prognostic factor.1 2 However, surgery of ependymomas located in brain stem is significantly challenging. This video demonstrates the microsurgical removal of an ependymoma originating from ependymal cells of the lateral recess of fourth ventricle via retrosigmoid approach in an 11-year-old female. The patient presented with a 6-month history of continues headache and vomiting. On examination, she had a walking instability and an emaciated body. Neuroimaging revealed a right lateral pontine lesion extending to the cerebellopontine angle region. The patient underwent a suboccipital craniotomy, followed by excellent exposure for the tumor. Petrosal vein encased by the tumor mass and close adhesion of the tumor and the initial segments of facial and acoustic nerves adjoined brain stem could be seen operatively. While preserving trigeminal nerve, facial and acoustic nerves, posterior cranial nerves, anterior inferior cerebellar artery, labyrinth artery, posterior inferior cerebellar artery, and petrosal vein, gross total resection was achieved under the careful operation along arachnoid spaces together with intratumoral decompression. The patient tolerated the procedure well without any neurological deficits. Histological examination confirmed the tumor as an ependymoma (WHO II). The cytology measurement of the cerebrospinal fluid did not find any tumor cells. Postoperative computed tomography and magnetic resonance imaging scan depicted complete resection of the tumor, and adjuvant radiotherapy was recommended. She remained symptom-free without any evidence of recurrence during the follow-up period of 1 year. Informed consent was obtained from the patient.The link to the video can be found at: https://youtu.be/sZ9GhUeltwc.

scholarly journals Hyperspectral Imaging for Glioblastoma Surgery: Improving Tumor Identification Using a Deep Spectral-Spatial Approach

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6955
Author(s):  
Francesca Manni ◽  
Fons van der Sommen ◽  
Himar Fabelo ◽  
Svitlana Zinger ◽  
Caifeng Shan ◽  
...  
Keyword(s):  
Hyperspectral Imaging ◽  
Spatial Information ◽  
Tumor Resection ◽  
Malignant Lesion ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Svm Classifier ◽  
Clinical Workflow ◽  
Total Resection ◽  
Tumor Identification

The primary treatment for malignant brain tumors is surgical resection. While gross total resection improves the prognosis, a supratotal resection may result in neurological deficits. On the other hand, accurate intraoperative identification of the tumor boundaries may be very difficult, resulting in subtotal resections. Histological examination of biopsies can be used repeatedly to help achieve gross total resection but this is not practically feasible due to the turn-around time of the tissue analysis. Therefore, intraoperative techniques to recognize tissue types are investigated to expedite the clinical workflow for tumor resection and improve outcome by aiding in the identification and removal of the malignant lesion. Hyperspectral imaging (HSI) is an optical imaging technique with the power of extracting additional information from the imaged tissue. Because HSI images cannot be visually assessed by human observers, we instead exploit artificial intelligence techniques and leverage a Convolutional Neural Network (CNN) to investigate the potential of HSI in twelve in vivo specimens. The proposed framework consists of a 3D–2D hybrid CNN-based approach to create a joint extraction of spectral and spatial information from hyperspectral images. A comparison study was conducted exploiting a 2D CNN, a 1D DNN and two conventional classification methods (SVM, and the SVM classifier combined with the 3D–2D hybrid CNN) to validate the proposed network. An overall accuracy of 80% was found when tumor, healthy tissue and blood vessels were classified, clearly outperforming the state-of-the-art approaches. These results can serve as a basis for brain tumor classification using HSI, and may open future avenues for image-guided neurosurgical applications.

scholarly journals Mapping of the internal capsule with subcortical stimulation for gross-total resection of a thalamic metastatic tumor

2018 ◽  
Vol 45 (VideoSuppl2) ◽  
pp. V7 ◽  
Author(s):  
Sima Sayyahmelli ◽  
Ilhan Aydin ◽  
Bryan Wheeler ◽  
Mustafa K. Baskaya
Keyword(s):  
Vasogenic Edema ◽  
Internal Capsule ◽  
Metastatic Tumor ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Microsurgical Anatomy ◽  
Total Resection ◽  
Stereotactic Radiation ◽  
Transcallosal Approach ◽  
Subcortical Stimulation

Although the surgical treatment of thalamic tumors remains challenging due to the proximity to the internal capsule, safe resection of gliomas or metastatic tumors of the thalamus are possible in some selected cases due to a better understanding of microsurgical anatomy and due to advances in neurophysiological mapping and monitoring.In this video, the authors demonstrate the use of mapping of the internal capsule with direct subcortical stimulation for the resection of a metastatic tumor. The patient is a 58-year-old man with a history of renal cell carcinoma and metastasis in the left thalamus and parieto-occipital region. He underwent stereotactic radiation of both tumors at an outside hospital. Due to the increased size of both tumors and surrounding vasogenic edema, he was referred to the authors for resection. He underwent gross-total resection via an interhemispheric transcallosal approach. His postoperative course was uneventful and did not have any focal neurological deficits, including motor, sensory, or visual functions.The authors’ surgical approach to this metastatic thalamic tumor and the intraoperative real-time direct subcortical stimulation of the internal capsule during surgery are demonstrated in this video.The video can be found here: https://youtu.be/DmDxjJUSZWU.

scholarly journals Intraventricular neuroepithelial tumors: Surgical outcome, technical considerations and review of literature

2020 ◽  
Author(s):  
Amir Kaywan Aftahy ◽  
Melanie Barz ◽  
Philipp Krauss ◽  
Friederike Liesche ◽  
Benedikt Wiestler ◽  
...  
Keyword(s):  
Postoperative Outcome ◽  
Gross Total Resection ◽  
Neurological Deficits ◽  
Surgical Approaches ◽  
Total Resection ◽  
Term Survival ◽  
Neuroepithelial Tumors ◽  
Glioependymal Cyst ◽  
Tertiary Center ◽  
4Th Ventricle

Abstract Background Intraventricular neuroepithelial tumors (IVT) are rare lesions and comprise different pathological entities such as ependymomas, subependymomas and central neurocytomas. The treatment of choice is neurosurgical resection, which can be challenging due to their intraventricular location. Different surgical approaches to the ventricles are described. Here we describe a large series of IVTs, its postoperative outcome at a single tertiary center and discuss suitable surgical approaches. Methods We performed a retrospective chart review at a single tertiary neurosurgical center between 03/2009-05/2019. We included patients that underwent resection of an IVT emphasizing on surgical approach, extent of resection, clinical outcome and postoperative complications. Results 45 IVTs were resected from 03/2009 to 05/2019, 13 ependymomas, 21 subependymomas, 10 central neurocytomas and one glioependymal cyst. Median age was 52,5 years with 55.6% (22) male and 44.4% (20) female patients. Gross total resection was achieved in 93.3% (42/45). 84.6% (11/13) of ependymomas, 100% (12/21) of subependymomas, 90% (9/10) of central neurocytomas and one glioependymal cyst were completely removed. Postoperative rate of new neurological deficits was 26.6% (12/45). Postoperative new permanent cranial nerve deficits occurred in one case with 4th ventricle subependymoma and one in 4th ventricle ependymoma. Postoperative KPSS was 90% (IR 80–100). 31.1% of the patients improved in KPSS, 48.9% remained unchanged and 20% declined. Postoperative adverse events rate was 20.0%. Surgery-related mortality was 2.2%. The rate of shunt/cisternostomy-dependent hydrocephalus was 13.3% (6/45). 15.4% of resected ependymomas underwent adjuvant radiotherapy. Mean follow-up was 26,9 (± 30.1) months. Conclusion Our surgical findings emphasize satisfactory complete resection throughout all entities. Surgical treatment can remain feasible, if institutional experience is given. Satisfying long-term survival and cure is possible by complete removal. Gross total resection should always be performed under function-remaining aspects due to mostly benign or slow growing nature of IVTs. Further data is needed to evaluate standard of care and alternative therapy options in rare cases of tumor recurrence or in case of patient collective not suitable for operative resection.

Sign in / Sign up

Export Citation Format

Share Document