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Takeshima Y, Takami H, Endo T, Mizuno M, Hida K. Comparison of the Recurrence and Surgical Outcome of Spinal Hemangioblastoma in Sporadic and Von Hippel-Lindau Diseases: A Subanalysis of a Nationwide Study by the Neurospinal Society of Japan. Neurospine 2023; 20:756-765. [PMID: 37350167 PMCID: PMC10562215 DOI: 10.14245/ns.2346368.184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 06/09/2023] [Accepted: 06/18/2023] [Indexed: 06/24/2023] Open
Abstract
OBJECTIVE This study aimed to clarify the relationship between recurrence and the extent of resection in surgery for intramedullary spinal hemangioblastoma (sHB) and its impact on von Hippel-Lindau (vHL) disease. METHODS Data on sHB cases followed up for at least 6 months after surgery were extracted from a nationwide registry of 1,033 consecutive spinal intramedullary tumors surgically treated between 2009 and 2020, and were retrospectively categorized into a sporadic or vHL group. The diagnosis of vHL disease was made at each institution based on clinical findings. RESULTS A total of 168 patients (sporadic group, 101; vHL group, 67) were included in the study. Compared with the sporadic group, the vHL group had a younger onset (45.4 ± 16.8 years vs. 39.6 ± 14.1 years, p = 0.02), more preoperative motor (47.5% vs. 68.7%, p < 0.01) and gait (37.6% vs. 61.2%, p < 0.01) impairments, and more patients with worsening neurological symptoms at discharge (p = 0.02). The gross total resection (GTR) rates and the recurrence rates were not statistically different between the sporadic and the vHL groups. GTR significantly improved recurrence-free survival compared to non-GTR in all patient analysis (p < 0.01) but this trend was not observed in the sporadic group. Physical functional improvement from discharge to 6 months after surgery was observed in the sporadic group (p < 0.01) but not in the vHL group. CONCLUSION A high GTR rate may sufficiently decrease susceptibility to recurrence, especially in patients with sHB with vHL. In sporadic sHB, postoperative functional improvement can be expected, and the long-term functional prognosis is favorable.
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Affiliation(s)
| | - Hirokazu Takami
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo Hospital, Tokyo, Japan
| | - Toshiki Endo
- Department of Neurosurgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
| | - Masaki Mizuno
- Department of Minimum-Invasive Neurospinal Surgery, Mie University, Tsu, Japan
| | - Kazutoshi Hida
- Department of Neurosurgery, Sapporo Azabu Neurosurgical Hospital, Sapporo, Japan
| | - for the Investigators of Intramedullary Spinal Cord Tumors in the Neurospinal Society of Japan
- Department of Neurosurgery, Nara Medical University, Kashihara, Japan
- Department of Neurosurgery, Faculty of Medicine, The University of Tokyo Hospital, Tokyo, Japan
- Department of Neurosurgery, Tohoku Medical and Pharmaceutical University, Sendai, Japan
- Department of Minimum-Invasive Neurospinal Surgery, Mie University, Tsu, Japan
- Department of Neurosurgery, Sapporo Azabu Neurosurgical Hospital, Sapporo, Japan
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Vetrano IG, Gioppo A, Faragò G, Pinzi V, Pollo B, Broggi M, Schiariti M, Ferroli P, Acerbi F. Hemangioblastomas and Other Vascular Origating Tumors of Brain or Spinal Cord. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2023; 1405:377-403. [PMID: 37452946 DOI: 10.1007/978-3-031-23705-8_14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
Hemangioblastomas (HBs) are highly vascularized, slow-growing, rare benign tumors (WHO grade I). They account for about 2% of intracranial neoplasms; however, they are the most common primary cerebellar tumors in adults. Another frequent seat is the spinal cord (2-10% of primary spinal cord tumors). HBs are constituted by stromal and capillary vascular cells; macroscopically, HBs appear as nodular tumors, with or without cystic components. Although most of the HBs are sporadic (57-75%), they represent a particular component of von Hippel-Lindau disease (VHL), an autosomal dominant syndrome with high penetrance, due to a germline pathogenic mutation in the VHL gene, which is a tumor suppressor with chromosomal location on the short arm of chromosome three. VHL disease determines a variety of malignant and benign tumors, most frequently HBs, renal cell carcinomas, pheochromocytomas/paragangliomas, pancreatic neuroendocrine tumors, and endolymphatic sac tumors. Up to 20% of cases are due to de novo pathogenic variants without a family history. Many epidemiologic details of these tumors, especially the sporadic forms, are not well known. The median age of patients with sporadic HBS is about 40 years. More than two-third of VHL patients develop one or more central nervous system HBs during their lifetime; in case of VHL, patients at first diagnosis are usually younger than the patients with sporadic tumors. The most common presenting signs and symptoms are related to increased intracranial pressure, cerebellar signs, or spinal cord alterations in case of spinal involvement. Magnetic resonance imaging is the gold standard for the diagnosis, assessment, and follow-up of HBs, both sporadic and syndrome-related; angiography is rarely performed because the diagnosis is easily obtained with magnetic resonance. However, the diagnosis of an asymptomatic lesion does not automatically result in therapeutic actions, as the risks of treatment and the onset of possible neurological deficit need to be balanced, considering that HBs may remain asymptomatic and have a static or slow-growing behavior. In such cases, regular follow-up can represent a valid therapeutic option until the patients remain asymptomatic. There are no actual pharmacological therapies that are demonstrated to be effective for HBs. Surgery represents the primary therapeutic approach for these tumors. Observation or radiotherapy also plays a role in the long-term management of patients harboring HBs, especially in VHL; in few selected cases, endovascular treatment has been suggested before surgical removal. This chapter presents a systematic overview of epidemiology, clinical appearance, histopathological and neuroradiological characteristics of central nervous system HBs. Moreover, the genetic and molecular biology of sporadic and VHL HBS deserves special attention. Furthermore, we will describe all the available therapeutic options, along with the follow-up management. Finally, we will briefly report other vascular originating tumors as hemangioendotheliomas, hemangiomas, or angiosarcomas.
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Affiliation(s)
- Ignazio G Vetrano
- Neurovascular Surgery Unit, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Andrea Gioppo
- Interventional Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Giuseppe Faragò
- Interventional Neuroradiology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Valentina Pinzi
- Radiotherapy Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Bianca Pollo
- Neuropathology Unit, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Morgan Broggi
- Neurovascular Surgery Unit, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Marco Schiariti
- Neurovascular Surgery Unit, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Paolo Ferroli
- Neurovascular Surgery Unit, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Francesco Acerbi
- Neurovascular Surgery Unit and Experimental Microsurgical Laboratory, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, Via G. Celoria 11, 20133, Milan, Italy.
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Mattogno PP, Menna G, Pennisi G, Corbi L, Sturiale CL, Polli FM, Olivi A, Della Pepa GM. Comparison of Effectiveness, Feasibility, Indications, and Limitations of Different Intraoperative Dyes in Spinal Neuro-Oncologic Surgery. A Systematic Review. World Neurosurg 2022; 168:146-153. [DOI: 10.1016/j.wneu.2022.09.117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Accepted: 09/27/2022] [Indexed: 11/06/2022]
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Mazzapicchi E, Restelli F, Falco J, Broggi M, Gatti L, Alongi P, Valentini L, Ferroli P, Vetrano IG, DiMeco F, Acerbi F. Sporadic and von Hippel-Lindau Related Hemangioblastomas of Brain and Spinal Cord: Multimodal Imaging for Intraoperative Strategy. Cancers (Basel) 2022; 14:cancers14225492. [PMID: 36428588 PMCID: PMC9688688 DOI: 10.3390/cancers14225492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 10/31/2022] [Accepted: 11/07/2022] [Indexed: 11/12/2022] Open
Abstract
Hemangioblastomas (HBs) are rare, benign tumors often related to von Hippel-Lindau disease. They represent the most frequent primary cerebellar tumors in adults. Neurosurgical procedures aim to obtain a gross-total resection of tumor nodules, avoiding intra-postoperative hemorrhage. The introduction of new intraoperative imaging techniques has considerably changed surgical strategies in neuro-oncology. We present an overview of clinical and radiological data of a mono-institutional retrospective cohort, focusing on the role of intraoperative multimodal imaging in surgical strategy. From 2015 to 2021, we identified 64 (81%) cranial (42 cerebellar, 8 supratentorial, and 14 of the brainstem) HBs and 15 (19%) spinal (4 cervical and 11 dorsal) HBs in 79 patients. Intraoperatively, indocyanine green videoangiography with FLOW800 was used in 62 cases (52 cranial and 10 spinal), intraoperative ultrasound and contrast-enhanced ultrasounds in 22 cases (18 cranial and 4 spinal HBs), and fluorescein in 10 cases (in 6 cranial and 2 spinal cases used as SF-VA). Gross total resection was achieved in 100% of the cases (53 mural nodule removal and 26 complete resections of the solid tumor). No side effects were reported following the combination of these tools. Multimodal intraoperative techniques provide valuable and reliable information to identify the tumor and its vasculature, guiding a more precise and safer resection and reducing the risk of recurrence.
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Affiliation(s)
- Elio Mazzapicchi
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Francesco Restelli
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Jacopo Falco
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Morgan Broggi
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Laura Gatti
- Neurobiology Laboratory, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Pierpaolo Alongi
- Nuclear Medicine Unit, ARNAS Ospedali Civico, Di Cristina e Benfratelli, 90127 Palermo, Italy
| | - Laura Valentini
- Neurosurgical Unit 1, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Paolo Ferroli
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
| | - Ignazio G. Vetrano
- Neurosurgical Unit 1, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
- Department of Biomedical Sciences for Health, Università di Milano, 20122 Milan, Italy
- Correspondence:
| | - Francesco DiMeco
- Neurosurgical Unit 1, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
- Department of Oncology and Hemato-Oncology, Università di Milano, 20122 Milan, Italy
- Department of Neurological Surgery, Johns Hopkins Medical School, Baltimore, MD 21205, USA
| | - Francesco Acerbi
- Neurosurgical Unit 2, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
- Experimental Microsurgical Laboratory, Department of Neurosurgery, Fondazione IRCCS Istituto Neurologico Carlo Besta, 20133 Milan, Italy
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Sun Y, Wang Z, Jiang F, Yang X, Tan X, Chen Z, Liu Y, Zhu Y, Wang Z, Chen G. Utility of indocyanine green videoangiography with FLOW 800 analysis in brain tumour resection as a venous protection technique. BMC Surg 2022; 22:126. [PMID: 35366852 PMCID: PMC8976969 DOI: 10.1186/s12893-022-01573-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Accepted: 03/28/2022] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
In regard to central nervous system tumour resection, preserving vital venous structures to avoid devastating consequences such as brain oedema and haemorrhage is important. However, in clinical practice, it is difficult to obtain clear and vivid intraoperative venous visualization and blood flow analyses.
Methods
We retrospectively reviewed patients who underwent brain tumour resection with the application of indocyanine green videoangiography (ICG-VA) integrated with FLOW 800 from February 2019 to December 2020 and present our clinical cases to demonstrate the process of venous preservation. Galen, sylvian and superior cerebral veins were included in these cases.
Results
Clear documentation of the veins from different venous groups was obtained via ICG-VA integrated with FLOW 800, which semiquantitatively analysed the flow dynamics. ICG-VA integrated with FLOW 800 enabled us to achieve brain tumour resection without venous injury or obstruction of venous flux.
Conclusions
ICG-VA integrated with FLOW 800 is an available method for venous preservation, although further comparisons between ICG-VA integrated with FLOW 800 and other techniques of intraoperative blood flow monitoring is needed.
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Singh YB, Cho SS, Blue R, Teng CW, De Ravin E, Buch L, Lee JYK. Second-Window Indocyanine Green for Visualization of Hemangioblastoma: A Case Report With Two-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2021; 20:E229-E233. [PMID: 33442750 DOI: 10.1093/ons/opaa392] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Accepted: 09/13/2020] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND AND IMPORTANCE The proper differentiation of neoplastic tissue from adjacent brain parenchyma can pose a great challenge, especially in eloquent areas of the brain. With the novel technique, "Second-Window Indocyanine Green," injection of a near-infrared fluorophore (ICG) allows for intraoperative visualization of tumors by taking advantage of the compromised vasculature surrounding the tumor. Thus, such a technique may demonstrate utility for hemangioblastomas, which are hypervascular tumors of the central nervous system. CLINICAL PRESENTATION Here we present the case of a 39-yr-old male with a demonstrated cystic mass in the left cerebellum, with additional edema spreading towards the vermis. A total of 5 mg/kg of ICG was delivered intravenously 24 h prior to the operation. The tumor was approached via the infratentorial suboccipital approach. We observed strong near-infrared fluorescence through the intact dura, consistent with the tumor location. Surgical pathology confirmed a final diagnosis of cerebellar hemangioblastoma. There was complete resection of the tumor, with the patient discharged uneventfully. CONCLUSION We report the first successful case of fluorescence-guided surgery of a cerebellar hemangioblastoma using near-infrared fluorescence imaging with the Second-Window ICG technique. This joins a growing series of publications that demonstrate the efficacy of a novel application of ICG, a near-infrared fluorophore, in accurate intraoperative visualization of neoplastic tissue. While the use of a dedicated near-infrared platform (ie, the VisionSense Iridium [Visionsense, Philadelphia, Pennsylvania]) yields a higher signal-to-background ratio, a neurosurgical microscope (ie, the Leica OH6 [Leica Microsystems, Wetzlar, Germany]) may also provide a suitable option in cases where fluorescence is very strong.
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Affiliation(s)
- Yash B Singh
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Steve S Cho
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Rachel Blue
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Clare W Teng
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Emma De Ravin
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania.,Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania
| | - Love Buch
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
| | - John Y K Lee
- Department of Neurosurgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania
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Della Pappa GM, Marchese E, Pedicelli A, Olivi A, Ricciardi L, Rapisarda A, Skrap B, Sabatino G, La Rocca G. Contrast-Enhanced Ultrasonography and Color Doppler: Guided Intraoperative Embolization of Intracranial Highly Vascularized Tumors. World Neurosurg 2019; 128:547-555. [DOI: 10.1016/j.wneu.2019.05.142] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Revised: 05/15/2019] [Accepted: 05/16/2019] [Indexed: 12/21/2022]
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8
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Acerbi F, Vetrano IG, Sattin T, de Laurentis C, Bosio L, Rossini Z, Broggi M, Schiariti M, Ferroli P. The role of indocyanine green videoangiography with FLOW 800 analysis for the surgical management of central nervous system tumors: an update. Neurosurg Focus 2018; 44:E6. [DOI: 10.3171/2018.3.focus1862] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVEIndocyanine green videoangiography (ICG-VA) is an intraoperative technique used to highlight vessels in neurovascular surgery. Its application in the study of the vascular pathophysiology in CNS tumors and its role in their surgical management are still rather limited. A recent innovation of ICG-VA (i.e., the FLOW 800 algorithm integrated in the surgical microscope) allows a semiquantitative evaluation of cerebral blood flow. The aim of this study was to evaluate for the first time the systematic application of ICG-VA and FLOW 800 analysis during surgical removal of CNS tumors.METHODSBetween May 2011 and December 2017, all cases in which ICG-VA and FLOW 800 analysis were used at least one time before, during, or after the tumor resection, and in which surgical videos were available, were retrospectively reviewed. Results of the histological analysis were analyzed together with the intraoperative ICG-VA with FLOW 800 in order to investigate the tumor-related videoangiographic features.RESULTSSeventy-one patients who underwent surgery for cerebral and spinal tumors were intraoperatively analyzed using ICG-VA with FLOW 800, either before or after tumor resection, for a total of 93 videoangiographic studies. The histological diagnosis was meningioma in 25 cases, glioma in 14, metastasis in 7, pineal region tumor in 5, hemangioblastoma in 4, chordoma in 3, and other histological types in 13 cases. The authors identified 4 possible applications of ICG-VA and FLOW 800 in CNS tumor surgery: extradural surveys allowed exploration of sinus patency and the course of veins before dural opening; preresection surveys helped in identifying pathological vascularization (arteriovenous fistulas and neo-angiogenesis) and regional venous outflow, and in performing temporary venous clipping tests, when necessary; postresection surveys were conducted to evaluate arterial and venous patency and parenchymal perfusion after tumor removal; and a premyelotomy survey was conducted in intramedullary tumors to highlight the posterior median sulcus.CONCLUSIONSThe authors found ICG-VA with FLOW 800 to be a useful method to monitor blood flow in the exposed vessels and parenchyma during microsurgical removal of CNS tumors in selected cases. In particular, a preresection survey provides useful information about pathophysiological changes of brain vasculature related to the tumor and aids in the individuation of helpful landmarks for the surgical approach, and the postresection survey helps to prevent potential complications associated with the resection (such as local hypoperfusion or venous infarction).
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Shinya T, Nagamine H, Sugawara KI, Ishiuchi S. The usefulness of indocyanine green during surgery for hypervascular posterior fossa tumors. Surg Neurol Int 2018; 9:90. [PMID: 29770250 PMCID: PMC5938893 DOI: 10.4103/sni.sni_19_18] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2018] [Accepted: 04/02/2018] [Indexed: 11/05/2022] Open
Abstract
BACKGROUND Cerebral hemangioblastomas are benign tumors with abundant blood flow that occur mainly in the posterior fossa. Tumor removal en bloc is important in surgical treatment because of the risk of bleeding; however, it is actually rather difficult in practice. Therefore, we propose a surgical strategy for visualizing hypervascular tumors of the posterior fossa utilizing indocyanine green (ICG). CASE DESCRIPTION Case 1 involved a 48-year-old male with a history of von Hippel-Lindau (VHL) disease. Magnetic resonance imaging (MRI) revealed a solid tumor measuring 3.0 cm in diameter in the right cerebellopontine angle. We performed surgery because the tumor was pressing against the brainstem. Surgery was performed via the posterior subtemporal transtentorial approach in order to visualize the feeding artery and draining vein intraoperatively. The vessels were confirmed by ICG and the tumor was removed en bloc. Case 2 involved a 30-year-old woman. Signs of increased intracranial pressure were noted, and an MRI revealed a solid tumor 3.5 cm in diameter in the left cerebellar hemisphere. Surgery was performed via the midline suboccipital approach. Similarly, we confirmed the vessels using ICG and the tumor was removed en bloc. CONCLUSIONS For hypervascular tumors of the posterior fossa, preoperative image assessment is important. Furthermore, the use of ICG during surgery is advantageous for surgical strategies where the feeding arteries and draining veins exist superficially in the operative field and are therefore easier to remove en bloc.
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Affiliation(s)
- Takahiro Shinya
- Department of Neurosurgery, University of the Ryukyus Faculty of Medicine Hospital, Okinawa, Japan
| | - Hideki Nagamine
- Department of Neurosurgery, University of the Ryukyus Faculty of Medicine Hospital, Okinawa, Japan
| | - Ken-ichi Sugawara
- Department of Neurosurgery, University of the Ryukyus Faculty of Medicine Hospital, Okinawa, Japan
| | - Shogo Ishiuchi
- Department of Neurosurgery, University of the Ryukyus Faculty of Medicine Hospital, Okinawa, Japan
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Sawada M, Munemitsu T, Hojo M. Intraoperative FLOW 800 Analysis for Intramedullary Cystic Lesion: A Technical Case Report. Oper Neurosurg (Hagerstown) 2017; 13:E23-E27. [PMID: 28922881 DOI: 10.1093/ons/opx044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 02/11/2017] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND AND IMPORTANCE During intramedullary lesion surgery, the lesion site and the posterior median sulcus (PMS) should be accurately identified prior to myelotomy to avoid severe injury of the posterior funiculus. However, intramedullary lesions are fundamentally invisible until the myelotomy is performed. Furthermore, the PMS location is frequently unclear due to lesion-induced swelling or distortion of the spinal cord. Intraoperative indocyanine green videoangiography (ICG-VA) followed by FLOW 800 analysis, which shows vascularization of the spinal parenchyma, may provide a solution for these problems in specific cases. CLINICAL PRESENTATION A 61-year-old woman suffering from claudication visited our department. Magnetic resonance imaging (MRI) revealed a cystic lesion at the level of Th11. A solid portion was not detected in the T1-weighted images following gadolinium administration. We made a diagnosis of ventriculus terminalis and performed a lesion resection. Prior to opening the PMS, ICG-VA was performed, which revealed an avascular area representing the intramedullary cyst. The PMS was the most avascular area observed in the time-intensity analysis executed using FLOW 800 software (Zeiss, Oberkochen, Germany). Thus, it was helpful in determining the site for myelotomy, which should be performed at the center of the extent of the lesion. The patient was discharged 23 days after the operation, ambulating independently. CONCLUSION Intraoperative ICG-VA followed by FLOW 800 analysis was applied to a case of intramedullary cystic lesion. This technique may be helpful in performing safer intramedullary cystic lesion surgery because it enables visualization of the lesion location and confirmation of the PMS.
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Affiliation(s)
- Masahiro Sawada
- Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan
| | - Toshihiro Munemitsu
- Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan
| | - Masato Hojo
- Department of Neurosurgery, Shiga Medical Center for Adults, Moriyama, Japan
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Gong T, Liu Y, Wang G, Yang L, Chen W, Gao F, Chen X. Spinal perimedullary vein enlargement sign: an added value for the differentiation between intradural-extramedullary and intramedullary tumors on magnetic resonance imaging. Neuroradiology 2016; 58:1117-1124. [PMID: 27596484 DOI: 10.1007/s00234-016-1744-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2016] [Accepted: 08/24/2016] [Indexed: 11/27/2022]
Abstract
INTRODUCTION The purpose of this study was to determine the added value of the perimedullary spinal vein enlargement sign on magnetic resonance imaging (MRI) in distinguishing intradural-extramedullary tumors (IDEMTs) from intramedullary spinal tumors (IMTs). METHODS Two hundred and eight consecutive spinal intradural tumors with histopathologic confirmation (21 IMTs, 187 IDEMTs) were enrolled. Two readers blinded to the final pathological diagnosis and clinical data independently assessed the venous enlargement sign to determine the agreement between them and jointly distinguished IDEMTs from IMTs according to the common MRI findings. Sensitivity, specificity, and accuracy for the diagnosis of IDEMTs were calculated for the common MRI findings, vein enlargement sign, and a combination of both. RESULTS Intraobserver agreement and interobserver agreement for both readers was excellent. The sensitivity, specificity, and accuracy of common MRI findings for differentiating IDEMTs from IMTs were 83.4, 95.2, and 89.3 %, respectively. Thirty-one IDEMTs were mistakenly diagnosed as IMTs, in which seven were cases with vein enlargement signs. By applying the vein enlargement sign to the common MRI findings, the specificity remained at 95.2 %, while the sensitivity improved to 89.3 % and the accuracy increased to 92.3 %. CONCLUSION The spinal perimedullary vein enlargement sign is useful in assessing intradural tumors and to differentiate IDEMTs from IMTs.
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Affiliation(s)
- Tao Gong
- Department of Shandong Medical Imaging Research Institute, Shandong University, Jinan, 250000, People's Republic of China
| | - Yubo Liu
- Department of Radiology, Provincial Hospital Affiliated to Shandong University, Jinan, People's Republic of China
| | - Guangbin Wang
- Department of Shandong Medical Imaging Research Institute, Shandong University, Jinan, 250000, People's Republic of China.
| | - Li Yang
- Department of Radiology, Zhongshan Hospital, Shanghai, People's Republic of China
| | - Weibo Chen
- Philips Healthcare, Shanghai, People's Republic of China
| | - Fei Gao
- Department of Shandong Medical Imaging Research Institute, Shandong University, Jinan, 250000, People's Republic of China
| | - Xin Chen
- Department of Shandong Medical Imaging Research Institute, Shandong University, Jinan, 250000, People's Republic of China
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Messerer M, Cossu G, Pralong E, Daniel RT. Intramedullary hemangioblastoma: Microsurgical resection technique. Neurochirurgie 2016; 63:376-380. [PMID: 26776665 DOI: 10.1016/j.neuchi.2015.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Revised: 11/15/2015] [Accepted: 11/17/2015] [Indexed: 11/25/2022]
Abstract
Spinal hemangioblastomas are benign and highly vascular tumors accounting for 1-5% of intramedullary spinal tumors in surgical series. Surgery is curative in sporadic cases. We present the description of a surgical technique to safely resect an intramedullary hemangioblastoma. A dorsal midline myelotomy provides an excellent exposure of the tumor and identification of the feeding arteries. Interruption of these arteries and precise dissection of the tumor from the cord tissue followed by division of the venous drainage allow the in toto excision of the tumor. Closure of the dorsal myelotomy may be achieved with sequential fusion of the pial and arachnoid edges using a "welding" technique.
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Affiliation(s)
- M Messerer
- Section of Neurosurgery, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland; Section of Neurosurgery, Kremlin-Bicêtre Hospital, University of Paris Sud, 94270 Paris, France
| | - G Cossu
- Section of Neurosurgery, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland.
| | - E Pralong
- Section of Neurosurgery, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland
| | - R T Daniel
- Section of Neurosurgery, Department of Clinical Neurosciences, Lausanne University Hospital, Lausanne, Switzerland
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