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Griffin LR, Nolan MW, Selmic LE, Randall E, Custis J, LaRue S. Stereotactic radiation therapy for treatment of canine intracranial meningiomas. Vet Comp Oncol 2014; 14:e158-e170. [PMID: 25524449 DOI: 10.1111/vco.12129] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 10/17/2014] [Accepted: 10/30/2014] [Indexed: 12/31/2022]
Abstract
The objective of this study is to determine the rate of toxicity, median survival time (MST) and prognostic factors in dogs with presumed intracranial meningiomas that were treated with stereotactic radiation therapy (SRT). Patient demographics, neurological history, details of SRT plans and response to treatment (including toxicity and survival times) were examined for potential prognostic factors. Overall MST (MST) due to death for any cause was 561 days. There was a mild to moderate exacerbation of neurological symptoms 3-16 weeks following SRT treatments in 11/30 (36.7%) of dogs. This presumed adverse event was treated with corticosteroids, and improvement was seen in most of these dogs. Death within 6 months of treatment as a result of worsening neurologic signs was seen in 4/30 (13.3%) of dogs. Volume of normal brain that received full dose at a prescription of 8Gy × 3 fractions was predictive of death due to neurological problems within this 6-month period.
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Affiliation(s)
- L R Griffin
- Department of Environmental and Biological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - M W Nolan
- Radiation Oncology, North Carolina State University, Raleigh, NC, USA
| | - L E Selmic
- Department of Veterinary Clinical Medicine, University of Illinois, Urbana, IL, USA
| | - E Randall
- Diagnostic Imaging, Colorado State University, Fort collins, CO, USA
| | - J Custis
- Environmental Health and Radiological Health Sciences, Colorado State University, Fort Collins, CO, USA
| | - S LaRue
- Animal Cancer Center, Colorado State University, Fort Collins, CO, USA
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Inoue HK, Sato H, Suzuki Y, Saitoh JI, Noda SE, Seto KI, Torikai K, Sakurai H, Nakano T. Optimal hypofractionated conformal radiotherapy for large brain metastases in patients with high risk factors: a single-institutional prospective study. Radiat Oncol 2014; 9:231. [PMID: 25322826 PMCID: PMC4203932 DOI: 10.1186/s13014-014-0231-5] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 10/06/2014] [Indexed: 11/23/2022] Open
Abstract
Background A single-institutional prospective study of optimal hypofractionated conformal radiotherapy for large brain metastases with high risk factors was performed based on the risk prediction of radiation-related complications. Methods Eighty-eight patients with large brain metastases ≥10 cm3 in critical areas treated from January 2010 to February 2014 using the CyberKnife were evaluated. The optimal dose and number of fractions were determined based on the surrounding brain volume circumscribed with a single dose equivalent (SDE) of 14 Gy (V14) to be less than 7 cm3 for individual lesions. Univariate and multivariate analyses were conducted. Results As a result of optimal treatment, 92 tumors ranging from 10 to 74.6 cm3 (median, 16.2 cm3) in volume were treated with a median prescribed isodose of 57% and a median fraction number of five. In order to compare the results according to the tumor volume, the tumors were divided into the following three groups: 1) 10–19.9 cm3, 2) 20–29.9 cm3 and 3) ≥30 cm3. The lesions were treated with a median prescribed isodose of 57%, 56% and 55%, respectively, and the median fraction number was five in all three groups. However, all tumors ≥20 cm3 were treated with ≥ five fractions. The median SDE of the maximum dose in the three groups was 47.2 Gy, 48.5 Gy and 46.5 Gy, respectively. Local tumor control was obtained in 90.2% of the patients, and the median survival was nine months, with a median follow-up period of seven months (range, 3-41 months). There were no significant differences in the survival rates among the three groups. Six tumors exhibited marginal recurrence 7-36 months after treatment. Ten patients developed symptomatic brain edema or recurrence of pre-existing edema, seven of whom required osmo-steroid therapy. No patients developed radiation necrosis requiring surgical resection. Conclusion Our findings demonstrate that the administration of optimal hypofractionated conformal radiotherapy based on the dose-volume prediction of complications (risk line for hypofractionation), as well as Kjellberg’s necrosis risk line used in single-session radiosurgery, is effective and safe for large brain metastases or other lesions in critical areas.
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Affiliation(s)
- Hiroshi K Inoue
- Cyber Center, Kanto Neurosurgical Hospital, 1120 Dai, Kumagaya, Saitama, 360-0804, Japan. .,Neurosurgery and Radiation Oncology, Institute of Neural Organization, 1120 Dai, Kumagaya, Saitama, 360-0804, Japan.
| | - Hiro Sato
- Cyber Center, Kanto Neurosurgical Hospital, 1120 Dai, Kumagaya, Saitama, 360-0804, Japan.
| | - Yoshiyuki Suzuki
- Department of Radiation Oncology, School of Medicine, Fukushima Medical University, 1 Hikarigaoka, Fukushima City, Fukushima, 960-1295, Japan.
| | - Jun-ichi Saitoh
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - Shin-ei Noda
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - Ken-ichi Seto
- Cyber Center, Kanto Neurosurgical Hospital, 1120 Dai, Kumagaya, Saitama, 360-0804, Japan.
| | - Kota Torikai
- Gunma University Heavy-ion Medical Research Center, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
| | - Hideyuki Sakurai
- Proton Medical Research Center, University of Tsukuba, 2-1-1 Amakubo, Tsukuba, Ibaraki, 365-8576, Japan.
| | - Takashi Nakano
- Department of Radiation Oncology, Gunma University Graduate School of Medicine, 3-39-22 Showa-machi, Maebashi, Gunma, 371-8511, Japan.
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53
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Bir SC, Ambekar S, Bollam P, Nanda A. Long-term outcome of gamma knife radiosurgery for metastatic brain tumors originating from lung cancer. Surg Neurol Int 2014; 5:S396-403. [PMID: 25289169 PMCID: PMC4173307 DOI: 10.4103/2152-7806.140197] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2014] [Accepted: 05/27/2014] [Indexed: 11/08/2022] Open
Abstract
Background: Gamma knife radiosurgery (GKRS) has emerged as an important treatment option for metastasis brain tumors (MBTs). However, the long-term outcome of GKRS on MBTs originating from lung carcinoma is not well understood. The treatment of MBTs derived from lung cancer with GKRS at our institution is reviewed. Methods: We performed a retrospective review (2000-2013) of 173 patients with MBTs from lung cancer who received GKRS. Out of 173 patients, 38 patients had recurrent tumors after microsurgical resection and whole brain radiotherapy (WBT). Results: GKRS in MBTs metastasized from lung carcinoma showed significant variations in tumor growth control (decreased in 79 [45.7%] patients, arrested growth in 54 [31.2%] patients, and increased tumor size in 40 [23.1%] patients). The median survival in the study population was 14 months. Overall survival after 3 years was 25%, whereas progression-free survival after 3 years was 45%. The predictive factors for improving survival in the patients with MBTs were recursive partitioning analysis (RPA) class I (P = 0.005), absence of hydrocephalus (P = 0.001), Karnofsky performance scale (KPS) >70 (P = 0.007), age ≤65 (P = 0.041), tumor size ≤3 cm (P = 0.023), controlled primary tumor (P = 0.049), and single number of MBTS (P = 0.044). Conclusion: Long-term follow-up revealed that GKRS offers a high rate of tumor control and good overall survival period in both new and recurrent patients with MBTs originating from lung carcinoma. Thus, GKRS is an effective treatment option for new patients with MBTs from lung cancer, as well as an adjuvant therapy in patients with recurrent MBTs derived from lung cancer.
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Affiliation(s)
- Shyamal C Bir
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Sudheer Ambekar
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Papireddy Bollam
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Anil Nanda
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
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Bir SC, Ambekar S, Nanda A. Long term outcome of Gamma Knife radiosurgery for metastatic brain tumors. J Clin Neurosci 2014; 21:2122-8. [PMID: 25065951 DOI: 10.1016/j.jocn.2014.05.015] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 05/06/2014] [Indexed: 11/27/2022]
Abstract
Gamma Knife radiosurgery (GKRS; Elekta AB, Stockholm, Sweden) has emerged as an important treatment option for metastatic brain tumors (MBT). However, the long term outcome of GKRS on MBT is not well understood. We reviewed the treatment of MBT with GKRS at our institution. We performed a retrospective review (2000-2013) of 298 patients with MBT who received GKRS. The study population was monitored clinically and radiographically after GKRS treatment. Survival benefits and predictive factors of the outcome were analyzed using the Kaplan-Meier test and Cox regression model, respectively. GKRS in MBT showed significant variation in tumor growth control (decreased in 135 [45%] patients, arrested growth in 91 [37%] patients and increased tumor size in 72 [24%] patients). The median survival in the study population was 17 months. Overall and progression free survival after 3 years were 25% and 45%, respectively. The predictive factors for improving survival in the patients with MBT were recursive partitioning analysis class I (p<0.0001), absence of hydrocephalus (p<0.0001), Karnofsky Performance Status (KPS) >80 (p=0.007) and absence of recurrent MBT (p=0.01). Forty (12%), 15 (4.3%) and two (0.6%) patients required GKRS, resection and whole brain radiation, respectively, after initial GKRS due to tumor progression and worsening of signs and symptoms. Our findings revealed that GKRS offers a high rate of tumor control and good survival benefits in both new and recurrent patients with MBT. Thus, GKRS is an effective treatment option for new patients with MBT, as well as an adjuvant therapy in patients with recurrent MBT.
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Affiliation(s)
- Shyamal C Bir
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Sudheer Ambekar
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA
| | - Anil Nanda
- Department of Neurosurgery, LSU Health-Shreveport, 1501 Kings Highway, Shreveport, LA 71130-3932, USA.
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55
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Bartolotti M, Franceschi E, Brandes AA. Treatment of brain metastases from HER-2-positive breast cancer: current status and new concepts. Future Oncol 2014; 9:1653-64. [PMID: 24156325 DOI: 10.2217/fon.13.90] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Breast cancer is the second most common source of brain metastases (BM). The incidence of BM in breast cancer patients has increased over the past decade, especially among patients with HER-2-positive breast cancer. This is probably due to how aggressive the HER-2-positive disease is but also to the prolongation of survival obtained with current treatments, which allow good control of extracranial disease but are unable to cross the blood-brain barrier. At present, whole-brain radiotherapy, surgery and radiosurgery/stereotactic radiotherapy represent the cornerstone of treatment for BM, while the role of pharmacological therapy remains uncertain. Lapatinib demonstrated activity against BM from HER-2-positive breast cancer in small Phase II and retrospective studies, mainly in combination with capecitabine, and cases of dramatic responses to such treatment are present in literature. In this review we focus on the available clinical data regarding the treatment of BM from HER-2-positive breast cancer and on new concepts about the treatment and evaluation of the CNS response.
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Affiliation(s)
- Marco Bartolotti
- Department of Medical Oncology, Azienda USL, Via Altura 3 40139, Bologna, Italy
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56
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Schüttrumpf LH, Niyazi M, Nachbichler SB, Manapov F, Jansen N, Siefert A, Belka C. Prognostic factors for survival and radiation necrosis after stereotactic radiosurgery alone or in combination with whole brain radiation therapy for 1-3 cerebral metastases. Radiat Oncol 2014; 9:105. [PMID: 24885624 PMCID: PMC4036428 DOI: 10.1186/1748-717x-9-105] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 04/22/2014] [Indexed: 11/30/2022] Open
Abstract
Background In the present study factors affecting survival and toxicity in cerebral metastasized patients treated with stereotactic radiosurgery (SRS) were analyzed with special focus on radiation necrosis. Patients and methods 340 patients with 1–3 cerebral metastases having been treated with SRS were retrospectively analyzed. Radiation necrosis was diagnosed by MRI und PET imaging. Univariate and multivariate analysis using a Cox proportional hazards regression model and log-rank test were performed to determine the prognostic value of treatment-related and individual factors for outcome and SRS-related complications. Results Median overall survival was 282 days and median follow-up 721 days. 44% of patients received WBRT during the course of disease. Concerning univariate analysis a significant difference in overall survival was found for Karnofsky Performance Status (KPS ≤ 70: 122 days; KPS > 70: 342 days), for RPA (recursive partitioning analysis) class (RPA class I: 1800 days; RPA class II: 281 days; RPA class III: 130 days), irradiated volume (≤2.5 ml: 354 days; > 2.5 ml: 234 days), prescribed dose (≤18 Gy: 235 days; > 18 Gy: 351 days), gender (male: 235 days; female: 327 days) and whole brain radiotherapy (+WBRT: 341 days/-WBRT: 231 days). In multivariate analysis significance was confirmed for KPS, RPA class and gender. MRI and clinical symptoms suggested radiation necrosis in 21 patients after SRS +/− whole brain radiotherapy (WBRT). In five patients clinically relevant radiation necrosis was confirmed by PET imaging. Conclusions SRS alone or in combination with WBRT represents a feasible option as initial treatment for patients with brain metastases; however a significant subset of patients may develop neurological complications. Performance status, RPA class and gender were identified to predict improved survival in cerebral metastasized patients.
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Affiliation(s)
| | | | | | | | | | | | - Claus Belka
- Department of Radiation Oncology, University of Munich, Marchioninistr 15, Munich 81377, Germany.
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57
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Obermueller T, Schaeffner M, Gerhardt J, Meyer B, Ringel F, Krieg SM. Risks of postoperative paresis in motor eloquently and non-eloquently located brain metastases. BMC Cancer 2014; 14:21. [PMID: 24422871 PMCID: PMC3899614 DOI: 10.1186/1471-2407-14-21] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Accepted: 12/10/2013] [Indexed: 12/03/2022] Open
Abstract
Background When treating cerebral metastases all involved multidisciplinary oncological specialists have to cooperate closely to provide the best care for these patients. For the resection of brain metastasis several studies reported a considerable risk of new postoperative paresis. Pre- and perioperative chemotherapy (Ctx) or radiotherapy (Rtx) alter vasculature and adjacent fiber tracts on the one hand, and many patients already present with paresis prior to surgery on the other hand. As such factors were repeatedly considered risk factors for perioperative complications, we designed this study to also identify risk factors for brain metastases resection. Methods Between 2006 and 2011, we resected 206 brain metastases consecutively, 56 in eloquent motor areas and 150 in non-eloquent ones. We evaluated the influences of preoperative paresis, previous Rtx or Ctx as well as recursive partitioning analysis (RPA) class on postoperative outcome. Results In general, 8.7% of all patients postoperatively developed a new permanent paresis. In contrast to preoperative Ctx, previous Rtx as a single or combined treatment strategy was a significant risk factor for postoperative motor weakness. This risk was even increased in perirolandic and rolandic lesions. Our data show significantly increased risk of new deficits for patients assigned to RPA class 3. Even in non-eloquently located brain metastases the risk of new postoperative paresis has not to be underestimated. Despite the microsurgical approach, our cohort shows a high rate of unexpected residual tumors in postoperative MRI, which supports recent data on brain metastases’ infiltrative nature but might also be the result of our strict study protocol. Conclusions Surgical resection is a safe treatment of brain metastases. However, preoperative Rtx and RPA score 3 have to be taken into account when surgical resection is considered.
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Affiliation(s)
| | | | | | | | | | - Sandro M Krieg
- Department of Neurosurgery, Technische Universität München, Ismaninger Str, 22, 81675 Munich, Germany.
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58
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Kellogg RG, Straus DC, Choi M, Chaudhry TA, Diaz AZ, Muñoz LF. Stereotactic radiosurgery boost to the resection cavity for cerebral metastases: Report of overall survival, complications, and corticosteroid protocol. Surg Neurol Int 2013; 4:S436-42. [PMID: 24349867 PMCID: PMC3858803 DOI: 10.4103/2152-7806.121632] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2013] [Accepted: 08/21/2013] [Indexed: 11/25/2022] Open
Abstract
Background: This report focuses on the overall survival and complications associated with treatment of cerebral metastases with surgical resection followed by stereotactic radiosurgery (SRS). Management and complications of corticosteroid therapy are underreported in the literature but represent an important source of morbidity for patients. Methods: Fifty-nine consecutive patients underwent surgical resection of a cerebral metastasis followed by SRS to the cavity. Patient charts were reviewed retrospectively to ascertain overall survival, local control, surgical complications, SRS complications, and corticosteroid complications. Results: Our mean follow-up was 14.4 months (median 12.0 months, range 0.9-62.9 months). Median overall survival in this series was 15.25 months and local control was 98.3%. There was a statistically significant survival benefit conferred by Radiation Therapy Oncology Group recursive partitioning analysis Classes 1 and 2. The surgical complication rate was 6.8% while the SRS complication rate was 2.4%. Corticosteroid complications are reported and dependence at 1 month was 20.3%, at 3 months 6.8%, at 6 months 1.7%, and at 12 months no patients remained on corticosteroid therapy. Conclusions: Overall survival and local control with this treatment paradigm compare well to the other published literature. Complications associated with this patient population are low. A corticosteroid tapering protocol is proposed and demonstrated lower rates of steroid-related complications and dependence than previously reported.
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Affiliation(s)
- Robert G Kellogg
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | - David C Straus
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
| | - Mehee Choi
- Department of Radiation Oncology, Loyola University Medical Center, Maywood, IL, USA
| | | | - Aidnag Z Diaz
- Department of Radiation Oncology, Rush University Medical Center, Chicago, IL, USA
| | - Lorenzo F Muñoz
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
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Krieg SM, Schäffner M, Shiban E, Droese D, Obermüller T, Gempt J, Meyer B, Ringel F. Reliability of intraoperative neurophysiological monitoring using motor evoked potentials during resection of metastases in motor-eloquent brain regions. J Neurosurg 2013; 118:1269-78. [DOI: 10.3171/2013.2.jns121752] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object
Resection of gliomas in or adjacent to the motor system is widely performed using intraoperative neuromonitoring (IOM). For resection of cerebral metastases in motor-eloquent regions, however, data are sparse and IOM in such cases is not yet widely described. Since recent studies have shown that cerebral metastases infiltrate surrounding brain tissue, this study was undertaken to assess the value and influence of IOM during resection of supratentorial metastases in motor-eloquent regions.
Methods
Between 2006 and 2011, the authors resected 206 consecutive supratentorial metastases, including 56 in eloquent motor areas with monitoring of monopolar direct cortically stimulated motor evoked potentials (MEPs). The authors evaluated the relationship between the monitoring data and the course of surgery, clinical data, and postoperative imaging.
Results
Motor evoked potential monitoring was successful in 53 cases (93%). Reduction of MEP amplitude correlated better with postoperative outcomes when the threshold for significant amplitude reduction was set at 80% (only > 80% reduction was considered significant decline) than when it was set at 50% (> 50% amplitude reduction was considered significant decline). Evidence of residual tumor was seen on MR images in 28% of the cases with significant MEP reduction. No residual tumor was seen in any case of stable MEP monitoring. Moreover, preoperative motor deficit, recursive partitioning analysis Class 3, and preoperative radiotherapy were independent risk factors for a new surgery-related motor weakness (occurring in 64% of patients with and 11% of patients without radiotherapy, p > 0.01).
Conclusions
Continuous MEP monitoring provides reliable monitoring of the motor system and also influences the course of operation in resection of cerebral metastases. However, in establishing warning criteria, only an amplitude decline > 80% of the baseline should be considered significant.
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Affiliation(s)
| | | | | | - Doris Droese
- 2Anesthesiology, Technische Universität München, Munich, Germany
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60
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Kellogg RG, Munoz LF. Selective excision of cerebral metastases from the precentral gyrus. Surg Neurol Int 2013; 4:66. [PMID: 23776752 PMCID: PMC3683173 DOI: 10.4103/2152-7806.112189] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Accepted: 04/01/2013] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND The surgical management of cerebral metastases to the eloquent cortex is a controversial topic. Precentral gyrus lesions are often treated with whole brain radiation therapy (WBRT) or stereotactic radiosurgery (SRS) because of the concern for causing new or worsened postoperative neurological deficits. However, there is evidence in the literature that radiation therapy carries significant risk of complication. We present a series of patients who were symptomatic from a precentral gyrus metastasis and underwent surgical excision. METHODS During a 2-year period from 2010 to 2012, 17 consecutive patients harboring a cerebral metastasis within the precentral gyrus underwent microsurgical resection. All patients were discussed at a multi-disciplinary tumor board. The prerequisite for neurosurgical treatment was stable systemic disease and life expectancy greater than 6 months as determined by the patient's oncologist. Patients also were required to harbor a symptomatic lesion within the motor cortex, defined as the precentral gyrus. RESULTS We present the 3-month neurological outcome for this group of patients. Surgery was uneventful and without any severe perioperative complications in all 17 patients. At 3 month follow up, symptoms had improved or been stabilized in 94.1% of patients and were worsened in 5.9%. CONCLUSION Our results have shown that surgery for cerebral metastases in the precentral gyrus can be done safely and improve or stabilize the neurological function of most patients. Microsurgical resection of precentral gyrus metastases should be a treatment option for patients with single or multiple lesions who present a focal neurologic deficit. This can be performed safely and without intraoperative cortical mapping.
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Affiliation(s)
- Robert G Kellogg
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL, USA
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61
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Schödel P, Schebesch KM, Brawanski A, Proescholdt MA. Surgical resection of brain metastases-impact on neurological outcome. Int J Mol Sci 2013; 14:8708-18. [PMID: 23615466 PMCID: PMC3676752 DOI: 10.3390/ijms14058708] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2013] [Revised: 04/13/2013] [Accepted: 04/16/2013] [Indexed: 11/16/2022] Open
Abstract
Brain metastases (BM) develop in about 30% of all cancer patients. Surgery plays an important role in confirming neuropathological diagnosis, relieving mass effects and improving the neurological status. To select patients with the highest benefit from surgical resection, prognostic indices (RPA, GPA) have been formulated which are solely focused on survival without considering neurological improvement. In this study we analyzed the impact of surgical resection on the neurological status in addition to overall survival in 206 BM patients. Surgical mortality and morbidity was 0.0% and 10.3% respectively. New neurologic deficits occurred in 6.3% of all patients. The median overall survival was 6.3 months. Poor RPA class and short time interval between diagnosis of cancer and the occurrence of BM were independent factors predictive for poor survival. Improvement of neurological performance was achieved in 56.8% of all patients, with the highest improvement rate seen in patients presenting with increased intracranial pressure and hemiparesis. Notably, the neurological benefits were independent from RPA class. In conclusion, surgical resection leads to significant neurological improvement despite poor RPA class and short overall survival. Considering the low mortality and morbidity rates, resection should be considered as a valid option to increase neurological function and quality of life for patients with BM.
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Affiliation(s)
- Petra Schödel
- Department of Neurosurgery, University of Regensburg Medical Center, Franz Josef Strauß Allee 11, Regensburg 93053, Germany.
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Hideghéty K, Plangár I, Mán I, Fekete G, Nagy Z, Volford G, Tőkés T, Szabó E, Szabó Z, Brinyiczki K, Mózes P, Németh I. Development of a small-animal focal brain irradiation model to study radiation injury and radiation-injury modifiers. Int J Radiat Biol 2013; 89:645-55. [DOI: 10.3109/09553002.2013.784424] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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63
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Telera S, Fabi A, Pace A, Vidiri A, Anelli V, Carapella CM, Marucci L, Crispo F, Sperduti I, Pompili A. Radionecrosis induced by stereotactic radiosurgery of brain metastases: results of surgery and outcome of disease. J Neurooncol 2013; 113:313-25. [PMID: 23525948 DOI: 10.1007/s11060-013-1120-8] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 03/16/2013] [Indexed: 11/24/2022]
Abstract
Sterotactic radiosurgery (SRS) is an effective and commonly employed therapy for metastatic brain tumors. Among complication of this treatment, symptomatic focal cerebral radionecrosis (RN) occurs in 2-10 % of cases. The large diffusion of combined therapies as SRS followed by WBRT and/or CHT, has significantly amplified the number of patients who potentially might be affected by this pathology and neurosurgeons are increasingly called to treat suspected area of RN. Results of surgery of RN in patients with brain metastases are rarely reported in literature, a standardization of diagnostic work-up to correctly identify RN is still lacking and the timing and indications in favour of surgical therapy over medical treatments are not clear as well. In this retrospective study, we review current concept related to RN and analyze the outcome of surgical treatment in a series of 15 patients previously submitted to SRS for brain metastases and affected by suspected radionecrotic lesions. After surgery, all patients except one neurologically improved. No intra-operative complications occurred. Brain edema improved in all patients allowing a reduction or even suspension of corticosteroid therapy. Pure RN was histologically determined in 7 cases; RN and tumor recurrence in the other 8. Overall median survival was 19 months. An aggressive surgical attitude may be advisable in symptomatic patients with suspected cerebral RN, to have histologic confirmation of the lesion, to obtain a long-lasting relief from the mass effect and brain edema and to improve the overall quality of life, sparing a prolonged corticosteroid therapy.
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Affiliation(s)
- Stefano Telera
- Division of Neurosurgery, Istituto Nazionale Tumori Regina Elena, via Elio Chianesi 53, 00144, Rome, Italy.
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Takakura K, Hayashi M, Chernov MF, Tamura N, Izawa M, Okada Y, Tamura M, Muragaki Y, Iseki H. Gamma knife treatment strategy for metastatic brain tumors. ACTA NEUROCHIRURGICA. SUPPLEMENT 2013; 116:63-9. [PMID: 23417461 DOI: 10.1007/978-3-7091-1376-9_11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
From 1993 to 2011, a total of 3,095 patients with brain metastases underwent Gamma Knife radiosurgery (GKS) at Tokyo Women's Medical University. Follow-up information on 2,283 of these patients was available for retrospective analysis. The cases were separated into three groups according to the treatment period, the model of the Gamma Knife used, main goals of treatment, and technical nuances of radiosurgery. In the latest cohort of patients treated with the Leksell Gamma Knife model 4C with automatic positioning system, an optimized treatment strategy was applied. It was based on highly selective dose planning, with the use of multiple small isocenters located within the bulk of the mass, which was done for prevention of the excessive irradiation of the perilesional brain and avoidance of its posttreatment edema. In cases of large cystic tumors, selective coverage of the contrast-enhancing capsule with chain-like application of multiple small isocenters was done. Introduction of the new treatment strategy did not affect the 1-year tumor control rate, which was consistently >90 %. However, it did result in a statistically significant reduction of severe posttreatment peritumoral brain edema (from 15.5 % to 6.3 %; P < 0.0001). In conclusion, recent technical and methodological achievements of GKS seemingly do not affect its high efficacy in cases of brain metastasis with regard to tumor control. However, it may result in a prominent reduction of treatment-associated -morbidity, which is particularly important in patients with large and/or critically located neoplasm.
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Affiliation(s)
- Kintomo Takakura
- Institute of Advanced Biomedical Engineering and Science, Tokyo Women's Medical University, 8-1 Kawada-cho, Shinjuku-ku, Tokyo, 162-8666, Japan.
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Yamamoto M, Kawabe T, Higuchi Y, Sato Y, Nariai T, Barfod BE, Kasuya H, Urakawa Y. Delayed Complications in Patients Surviving at Least 3 Years After Stereotactic Radiosurgery for Brain Metastases. Int J Radiat Oncol Biol Phys 2013; 85:53-60. [PMID: 22652110 DOI: 10.1016/j.ijrobp.2012.04.018] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2012] [Revised: 04/05/2012] [Accepted: 04/06/2012] [Indexed: 11/16/2022]
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Hardee ME, Formenti SC. Combining stereotactic radiosurgery and systemic therapy for brain metastases: a potential role for temozolomide. Front Oncol 2012; 2:99. [PMID: 22908046 PMCID: PMC3414728 DOI: 10.3389/fonc.2012.00099] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2012] [Accepted: 07/25/2012] [Indexed: 01/13/2023] Open
Abstract
Brain metastases are unfortunately very common in the natural history of many solid tumors and remain a life-threatening condition, associated with a dismal prognosis, despite many clinical trials aimed at improving outcomes. Radiation therapy options for brain metastases include whole brain radiotherapy (WBRT) and stereotactic radiosurgery (SRS). SRS avoids the potential toxicities of WBRT and is associated with excellent local control (LC) rates. However, distant intracranial failure following SRS remains a problem, suggesting that untreated intracranial micrometastatic disease is responsible for failure of treatment. The oral alkylating agent temozolomide (TMZ), which has demonstrated efficacy in primary malignant central nervous system tumors such as glioblastoma, has been used in early phase trials in the treatment of established brain metastases. Although results of these studies in established, macroscopic metastatic disease have been modest at best, there is clinical and preclinical data to suggest that TMZ is more efficacious at treating and controlling clinically undetectable intracranial micrometastatic disease. We review the available data for the primary management of brain metastases with SRS, as well as the use of TMZ in treating established brain metastases and undetectable micrometastatic disease, and suggest the role for a clinical trial with the aims of treating macroscopically visible brain metastases with SRS combined with TMZ to address microscopic, undetectable disease.
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Affiliation(s)
- Matthew E Hardee
- Department of Radiation Oncology, New York University Langone Medical Center New York, NY, USA
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Ogura K, Mizowaki T, Ogura M, Sakanaka K, Arakawa Y, Miyamoto S, Hiraoka M. Outcomes of hypofractionated stereotactic radiotherapy for metastatic brain tumors with high risk factors. J Neurooncol 2012; 109:425-32. [DOI: 10.1007/s11060-012-0912-6] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2011] [Accepted: 06/04/2012] [Indexed: 10/28/2022]
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Vuong DA, Rades D, van Eck ATC, Horstmann GA, Busse R. Comparing the cost-effectiveness of two brain metastasis treatment modalities from a payer's perspective: stereotactic radiosurgery versus surgical resection. Clin Neurol Neurosurg 2012; 115:276-84. [PMID: 22705458 DOI: 10.1016/j.clineuro.2012.05.005] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2011] [Revised: 04/28/2012] [Accepted: 05/12/2012] [Indexed: 11/28/2022]
Abstract
OBJECTIVES This study aims to identify the cost-effectiveness of two brain metastatic treatment modalities, stereotactic radiosurgery (SRS) versus surgical resection (SR), from the perspective of Germany's Statutory Health Insurance (SHI) System. METHODS Retrospectively reviewing 373 patients with brain metastases (BMs) who underwent SR (n=113) and SRS (n=260). Propensity score matching was used to adjust for selection bias (n=98 each); means of survival time and survival curves were defined by the Kaplan-Meier estimator; and medical costs of follow-up treatment were calculated by the Direct (Lin) method. The bootstrap resampling technique was used to assess the impact of uncertainty. RESULTS Survival time means of SR and SRS were 13.0, 18.4 months, respectively (P=0.000). Medians of free brain tumor time were 10.4 months for SR and 13.8 months for SRS (P=0.003). Number of repeated SRS treatments significantly influenced the survival time of SRS (R(2)=0.249; P=0.006). SRS had a lower average cost per patient (€9964 - SD: 1047; Skewness: 7273) than SR (€11647 - SD: 1594; Skewness: 0.465), leading to an incremental cost effectiveness ratio of €-3740 per life year saved (LYS), meaning that using SRS costs €1683 less than SR per targeted patient, but increases LYS by 0.45 years. CONCLUSION SRS is more cost-effective than SR in the treatment of brain metastasis (BM) from the SHI perspective. When the clinical conditions allow it, early intervention with SRS in new BM cases and frequent SRS repetition in new BM recurrent cases should be advised.
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Affiliation(s)
- Duong Anh Vuong
- Department of Health Care Management, Berlin University of Technology, Berlin, Germany.
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Elliott RE, Rush SC, Morsi A, Mehta N, Spriet J, Narayana A, Donahue B, Parker EC, Golfinos JG. Local control of newly diagnosed and distally recurrent, low-volume brain metastases with fixed-dose (20 gy) gamma knife radiosurgery. Neurosurgery 2012; 68:921-31; discussion 931. [PMID: 21221034 DOI: 10.1227/neu.0b013e318208f58e] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Metastases to the brain occur in 20% to 30% of patients with cancer and have been identified on autopsy in as many as 50% of patients. OBJECTIVE To analyze the efficacy of 20-Gy Gamma Knife radiosurgery (GKR) as initial treatment in patients with 1 to 3 brain metastases ≤ 2 cm in greatest diameter. METHODS A retrospective analysis of 114 consecutive adults with Karnofsky performance status ≥ 60 who received GKR for 1 to 3 brain metastases ≤ 2 cm in size was performed. Five patients lacked detailed follow-up and were excluded, leaving 109 for outcome analysis (34 men and 75 women; median age, 61.2 years). All metastases received 20 Gy to the 50% isodose line. RESULTS One hundred nine patients underwent treatment of 164 metastases at initial GKR. Twenty-six patients (23.9%) were alive at last follow-up (median time, 29.9 months; range, 6.6 months to 7.8 years). The median overall survival was 13.8 months (range, 1 day to 7.6 years). Among the 52 patients with distant failure, 33 patients received 20 Gy to 95 new lesions. A total of 259 metastases received 20 Gy, and 4 patients lacked imaging follow-up secondary to death before posttreatment imaging. Local failure occurred in 17 of 255 treated lesions (6.7%), yielding an overall local control rate of 93.3%. Actuarial local control at 6, 12, 24, and 36 months was 96%, 93%, 89%, and 88%, respectively. Permanent neurological complications occurred in 3 patients (2.8%). CONCLUSION Among patients with 1 to 3 brain metastases ≤ 2 cm in size who have not received whole-brain radiation therapy, GKR with 20 Gy provides high rates of local control with low morbidity and excellent neurological symptom-free survival.
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Affiliation(s)
- Robert E Elliott
- Department of Neurosurgery, New York University Langone Medical Center, New York, New York 10016, USA
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70
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Significance of target location relative to the depth from the brain surface and high-dose irradiated volume in the development of brain radionecrosis after micromultileaf collimator-based stereotactic radiosurgery for brain metastases. J Neurooncol 2012; 108:201-9. [PMID: 22392126 DOI: 10.1007/s11060-012-0834-3] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2011] [Accepted: 02/15/2012] [Indexed: 10/28/2022]
Abstract
The objective of this study was to investigate the factors that potentially lead to brain radionecrosis (RN) after micromultileaf collimator-based stereotactic radiosurgery (SRS) for brain metastases. We retrospectively evaluated 131 lesions with a minimum follow-up of 6 months, 43.5% of which received prior whole-brain radiotherapy (WBRT). The three-tiered location grade (LG) was defined, as follows, for each target by considering mainly the depth from the brain surface: grade 1 (superficial), involving the region at a depth of ≤5 mm from the brain surface; grade 2 (deep), located at a depth of >5 mm from the brain surface; and grade 3 (central), located in the brainstem, cerebellar peduncle, diencephalon, or basal ganglion. The predictive factors for RN, including high-dose irradiated isodose volumes (IIDVs) and LG, were evaluated by univariate and multivariate analysis. Symptomatic RN (S-RN) and asymptomatic RN (A-RN) were observed in 8.4% and 6.9% of cases, respectively. Multivariate analysis indicated that the significant factors for both types of RN were LG, V12 Gy, and V22 Gy in all cases; V22 Gy and LG for the non-WBRT cases; and V15 Gy and LG for the WBRT cases. For the non-WBRT cases, the cutoff values of V22 Gy were 2.62 and 2.14 cm(3) for S-RN and both RN, respectively. For the WBRT cases, the cutoff values of V15 Gy were 5.61 and 5.20 cm(3) for S-RN and both RN, respectively. In addition to the IIDV data, LG helps predict the risk of RN. High-dose IIDV, V22 Gy, was also significantly correlated with RN, particularly for patients treated with SRS alone.
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Affiliation(s)
- R Soffietti
- Division of Neuro-oncology, University and San Giovanni Battista Hospital, Turin, Italy.
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Rahmathulla G, Recinos PF, Valerio JE, Chao S, Barnett GH. Laser Interstitial Thermal Therapy for Focal Cerebral Radiation Necrosis: A Case Report and Literature Review. Stereotact Funct Neurosurg 2012; 90:192-200. [DOI: 10.1159/000338251] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2011] [Accepted: 02/28/2012] [Indexed: 11/19/2022]
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Abstract
Stereotactic radiosurgery (SRS) should be considered in the comprehensive treatment paradigm for all patients with brain metastases. This technique has proven benefits for local tumor control in individuals with as many as 4 lesions, and when combined with structured radiographic follow-up, will likely preserve a better quality of life for appropriately selected patients. Institutions and physicians treating patients with brain metastases should have the capability of safely performing SRS and individual cases should be prospectively reviewed by multidisciplinary teams to provide the best comprehensive care.
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Tang Y, Li Y, Luo D, Rong X, Ye J, Peng Y. Epilepsy related to radiotherapy in patients with nasopharyngeal carcinoma. Epilepsy Res 2011; 96:24-8. [DOI: 10.1016/j.eplepsyres.2011.04.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2011] [Revised: 04/10/2011] [Accepted: 04/24/2011] [Indexed: 10/18/2022]
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Wang CC, Floyd SR, Chang CH, Warnke PC, Chio CC, Kasper EM, Mahadevan A, Wong ET, Chen CC. Cyberknife hypofractionated stereotactic radiosurgery (HSRS) of resection cavity after excision of large cerebral metastasis: efficacy and safety of an 800 cGy × 3 daily fractions regimen. J Neurooncol 2011; 106:601-10. [PMID: 21879395 DOI: 10.1007/s11060-011-0697-z] [Citation(s) in RCA: 57] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Accepted: 08/11/2011] [Indexed: 10/17/2022]
Abstract
Development of hypofractionated stereotactic radiosurgery (HSRS) has expanded the size of lesion that can be safely treated by focused radiation in a limited number of treatment sessions. However, clinical data regarding the efficacy and morbidity of HSRS in the treatment of cerebral metastasis is lacking. Here, we review our experience with CyberKnife(®) HSRS for this indication. From 2005 to 2010, we identified 37 patients with large (>3 cm in diameter) cerebral metastases resection cavity that was treated with HSRS. This constituted approximately 8% of all treated resection cavities. We reviewed dose regimens, local control, distal control, and treatment associated morbidities. Primary sites for the metastatic lesions included: lung (n = 10), melanoma (n = 12), breast (n = 9), kidney (n = 4), and colon (n = 2). All patients underwent resection of the cerebral metastasis and received 800 cGy × 3 daily fractions to the resection cavity. Of the 37 patients treated, one-year follow-up data was available for 35 patients. The median survival was 5.5 months. Actuarial local control rate at 6 months was 80%. Local failures did not correlate with prior WBRT, or tumor histology. Distant recurrence occurred in 7 of the 35 patients. Morbidities associated with HSRS totaled 9%, including radiation necrosis (n = 1, 2.9%), prolonged steroid use (n = 1, 2.9%), and new-onset seizures (n = 1, 2.9%). This study demonstrates the safety and efficacy of an 800 cGy × 3 daily fractions CyberKnife(®) HSRS regimen for irradiation of large resection cavity. The efficacy compares favorably to historical data derived from patients undergoing WBRT, SRS, or brachytherapy.
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Affiliation(s)
- Che-Chuan Wang
- Department of Neurosurgery, Chi Mei Medical Center, Tainan, Taiwan
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76
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Rush S, Elliott RE, Morsi A, Mehta N, Spriet J, Narayana A, Donahue B, Parker EC, Golfinos JG. Incidence, timing, and treatment of new brain metastases after Gamma Knife surgery for limited brain disease: the case for reducing the use of whole-brain radiation therapy. J Neurosurg 2011; 115:37-48. [DOI: 10.3171/2011.2.jns101724] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Object
In this paper, the authors' goal was to analyze the incidence, timing, and treatment of new metastases following initial treatment with 20-Gy Gamma Knife surgery (GKS) alone in patients with limited brain metastases without whole-brain radiation therapy (WBRT).
Methods
A retrospective analysis of 114 consecutive adults (75 women and 34 men; median age 61 years) with KPS scores of 60 or higher who received GKS for 1–3 brain metastases ≤ 2 cm was performed (median lesion volume 0.35 cm3). Five patients lacking follow-up data were excluded from analysis. After treatment, patients underwent MR imaging at 6 weeks and every 3 months thereafter. New metastases were preferentially treated with additional GKS. Indications for WBRT included development of numerous metastases, leptomeningeal disease, or diffuse surgical-site recurrence.
Results
The median overall survival from GKS was 13.8 months. Excluding the 3 patients who died before follow-up imaging, 12 patients (11.3%) experienced local failure at a median of 7.4 months. Fifty-three patients (50%) developed new metastases at a median of 5 months. Six (7%) of 86 instances of new lesions were symptomatic. Most patients (67%) with distant failures were successfully treated using salvage GKS alone. Whole-brain radiotherapy was indicated in 20 patients (18.3%). Thirteen patients (11.9%) died of neurological disease.
Conclusions
For patients with limited brain metastases and functional independence, 20-Gy GKS provides excellent disease control and high-functioning survival with minimal morbidity. New metastases developed in almost 50% of patients, but additional GKS was extremely effective in controlling disease. Using our algorithm, fewer than 20% of patients required WBRT, and only 12% died of progressive intracranial disease.
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Affiliation(s)
- Stephen Rush
- 1Departments of Radiation Oncology and
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | - Robert E. Elliott
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | - Amr Morsi
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | - Nisha Mehta
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | - Jeri Spriet
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | | | - Bernadine Donahue
- 3Department of Radiation Oncology, Maimonides Medical Center, Brooklyn, New York
| | - Erik C. Parker
- 2Neurosurgery, New York University Langone Medical Center, New York; and
| | - John G. Golfinos
- 2Neurosurgery, New York University Langone Medical Center, New York; and
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Minniti G, Clarke E, Lanzetta G, Osti MF, Trasimeni G, Bozzao A, Romano A, Enrici RM. Stereotactic radiosurgery for brain metastases: analysis of outcome and risk of brain radionecrosis. Radiat Oncol 2011; 6:48. [PMID: 21575163 PMCID: PMC3108308 DOI: 10.1186/1748-717x-6-48] [Citation(s) in RCA: 541] [Impact Index Per Article: 41.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2011] [Accepted: 05/15/2011] [Indexed: 11/18/2022] Open
Abstract
Purpose to investigate the factors affecting survival and toxicity in patients treated with stereotactic radiosurgery (SRS), with special attention to volumes of brain receiving a specific dose (V10 - V16 Gy) as predictors for brain radionecrosis. Patients and Methods Two hundred six consecutive patients with 310 cerebral metastases less than 3.5 cm were treated with SRS as primary treatment and followed prospectively at University of Rome La Sapienza Sant'Andrea Hospital. Overall survival, brain control, and local control were estimated using the Kaplan-Meier method calculated from the time of SRS. Univariate and multivariate analysis using a Cox proportional hazards regression model were performed to determine the predictive value of prognostic factors for treatment outcome and SRS-related complications. Results Median overall survival and brain control were 14.1 months and 10 months, respectively. The 1-year and 2-year survival rates were 58% and 24%, and respective brain control were 43% and 22%. Sixteen patients recurred locally after SRS, with 1-year and 2-year local control rates of 92% and 84%, respectively. On multivariate analysis, stable extracranial disease and KPS >70 were associated with the most significant survival benefit. Neurological complications were recorded in 27 (13%) patients. Severe neurological complications (RTOG Grade 3 and 4) occurred in 5.8% of patients. Brain radionecrosis occurred in 24% of treated lesions, being symptomatic in 10% and asymptomatic in 14%. On multivariate analysis, V10 through V16 Gy were independent risk factors for radionecrosis, with V10 Gy and V12 Gy being the most predictive (p = 0.0001). For V10 Gy >12.6 cm3 and V12 Gy >10.9 cm3 the risk of radionecrosis was 47%. Conclusions SRS alone represents a feasible option as initial treatment for patients with brain metastases, however a significant subset of patients may develop neurological complications. Lesions with V12 Gy >8.5 cm3 carries a risk of radionecrosis >10% and should be considered for hypofractionated stereotactic radiotherapy especially when located in/near eloquent areas.
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Affiliation(s)
- Giuseppe Minniti
- Department of Radiation Oncology, Sant'Andrea Hospital, University La Sapienza, Rome, Italy.
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Lonser RR, Song DK, Klapper J, Hagan M, Auh S, Kerr PB, Citrin DE, Heiss JD, Camphausen K, Rosenberg SA. Surgical management of melanoma brain metastases in patients treated with immunotherapy. J Neurosurg 2011; 115:30-6. [PMID: 21476810 DOI: 10.3171/2011.3.jns091107] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Despite the increasing use of immunotherapy in the treatment of metastatic melanoma, the effects of this therapy on the management of patients with associated brain metastases are not completely defined. The authors undertook this study to determine the effectiveness of resection and the effects of immunotherapy on brain metastasis management. METHODS The authors analyzed data pertaining to consecutive patients with metastatic melanoma treated with immunotherapy within 3 months of discovery of brain metastases that were surgically resected. RESULTS Forty-one patients (median age 44.4 years, range 19.2-63.1 years) underwent resection of 53 brain metastases (median number of metastases 1, range 1-4). The median metastasis volume was 2.5 cm(3). Fifteen patients underwent whole-brain radiation therapy (WBRT) and 26 patients did not. Duration of survival from brain metastasis diagnosis was not significantly different between patients who received WBRT (mean 24.9 months) and those who did not (mean 23.3 months) (p > 0.05). Local and distant brain recurrence rates were not statistically different between the WBRT (7.1% and 28.6%, respectively) and non-WBRT (7.7% and 41.0%) groups for the duration of follow-up (p > 0.05). An objective systemic response to immunotherapy was associated with increased duration of survival (p < 0.05). CONCLUSIONS Resection of melanoma brain metastases in patients treated with immunotherapy provides excellent local control with low morbidity. An objective response to systemic immunotherapy is associated with a prolonged survival in patients who have undergone resection of melanoma brain metastases. Moreover, adjuvant WBRT in melanoma immunotherapy patients with limited metastatic disease to the brain does not appear to provide a significant survival benefit.
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Affiliation(s)
- Russell R Lonser
- Surgical Neurology Branch, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Building 10, Room 3D20, Bethesda, Maryland 20892, USA.
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Operative treatment of subcortical metastatic tumours in the central region. J Neurooncol 2010; 103:567-73. [PMID: 20878448 DOI: 10.1007/s11060-010-0420-5] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2010] [Accepted: 09/13/2010] [Indexed: 12/31/2022]
Abstract
The operative treatment of subcortical metastatic tumours within the paracentral area is still under discussion. Against the background of possible new postoperative neurological deficits and of evolving new radio oncological techniques, the indication for surgery is limited only to a subgroup of patients. In this retrospective study we present the clinical results after operative treatment of metastases within the central and paracentral brain region, with an emphasis on the short-term and mid-term functional outcome. We report on 20 patients suffering from subcortical brain metastases within the primary sensorimotor area, with a median volume on MRI-scans of 8.18 cm³. Patients were admitted to our department with a progressive hemiparesis (n = 11), focal seizures (n = 6) or other unspecific symptoms (n = 3) like headache, nausea, and neuropsychological disturbances, respectively. After updated MRI- and fMRI-scanning, intensive electrophysiological testing including MEP-brain mapping and interdisciplinary tumour-board discussion of each case, those patients were evaluated for surgery. Early postoperative control was done by MRI within the first 48 h. Follow-up took place in our outpatient department, assessing clinical criteria two and 6 weeks postoperatively, followed by clinical control and MRI-scans every 3 months. In all patients, surgery was performed under general anaesthesia, cranial neuro navigation and intraoperative motor cortex stimulation. Surgery and the early postoperative course were uneventful in all cases. After a 6 months follow-up, two patients had died. The motor deficits improved in seven patients and remained unchanged in four cases. One patient suffered from a new persistent hemiparesis. A temporary paresis occurred in two cases. In five patients there was no motor deficit pre- and postoperatively. The Karnofsky Performance Status improved in ten patients 6 months after surgery. Quality of Life, measured by the FACT-Br score, improved in 12 patients and remained unchanged in one patient. With modern techniques like fMRI-guided cranial neuronavigation and intraoperative neuromonitoring including direct stimulation of the motor cortex, microsurgical resection of subcortical paracentral metastases is feasible with an acceptable risk of neurological deterioration. Even preexistent deficits can improve with positive influence on the quality of life for oncological patients, being disabled by the symptoms caused by the cerebral lesion.
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80
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Peev NA, Hirose Y, Hirai T, Nishiyama Y, Nagahisa S, Kanno T, Sano H. Delayed surgical resections of brain metastases after gamma knife radiosurgery. Neurosurg Rev 2010; 33:349-57; discussion 357. [PMID: 20490885 DOI: 10.1007/s10143-010-0264-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2009] [Revised: 01/30/2010] [Accepted: 05/01/2010] [Indexed: 11/30/2022]
Abstract
Although brain metastases are one of the most frequently diagnosed sequelae of systemic malignancy, their optimal management still is not well defined. In that respect, the different diagnostic and therapeutic approaches of BMs patients is an issue for serious discussions. The treatment options include surgical excision, WBRT, radiosurgery, chemotherapy, immunotherapy, etc. Nowadays, the aforementioned treatment modalities are usually combined in different treatment schemes. More than one option is used for the same patient and combining these treatment modalities gives better results than when separately use them. The value of surgical excision of progressing brain metastases treated with gamma knife surgery (GKS) is not well investigated.With the present study, we aim to investigate the value of surgical excision of symptomatic brain lesions that have been previously treated with GKS.
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Affiliation(s)
- Nikolay A Peev
- Department of Neurosurgery, Fujita Health University, 1-98 Dengakugakubo, Kutsukake-cho, Toyoake 470-1192, Japan
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