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McCutcheon IE. Stereotactic Radiosurgery to Prevent Local Recurrence of Brain Metastasis After Surgery: Neoadjuvant Versus Adjuvant. ACTA NEUROCHIRURGICA. SUPPLEMENT 2021; 128:85-100. [PMID: 34191064 DOI: 10.1007/978-3-030-69217-9_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Over the past 15-20 years, stereotactic radiosurgery (SRS) has become the dominant method for treating patients with brain metastases (BM). The role of surgery for management of large tumors also remains important. Combining these two treatment modalities may well achieve the best local control, safety, and symptomatic relief in cases of neoplasms for which resection is desirable. After 10 years of retrospective studies that suggested patients might do better if surgery were followed by early adjuvant SRS, a prospective, randomized, controlled trial was conducted to compare such treatment with postoperative observation after tumor removal, and it showed significantly better local control in the former cohort, especially in smaller lesions, but no difference in overall survival. On the other hand, in the past 5 years, some groups have argued that neoadjuvant SRS before resection of BM might be superior to adjuvant SRS, while no clinical trial has yet been concluded that compares these two treatment strategies. For now, adjuvant and neoadjuvant SRS show evidence of utility in achieving better local control after surgical removal of BM in comparison with surgery alone, but no specific guidelines exist favoring one method over the other, and both should be considered beneficial in clinical care.
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Affiliation(s)
- Ian E McCutcheon
- Department of Neurosurgery, The University of Texas MD Anderson Cancer Center, Houston, TX, USA.
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Huff WX, Agrawal N, Shapiro S, Miller J, Kulwin C, Shah M, Savage JJ, Payner T, Vortmeyer A, Watson G, Dey M. Efficacy of pre-operative stereotactic radiosurgery followed by surgical resection and correlative radiobiological analysis for patients with 1-4 brain metastases: study protocol for a phase II trial. Radiat Oncol 2018; 13:252. [PMID: 30572923 PMCID: PMC6302493 DOI: 10.1186/s13014-018-1178-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2018] [Accepted: 11/09/2018] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Stereotactic radiosurgery (SRS) has emerged as a common adjuvant modality used with surgery for resectable brain metastases (BMs). However, the optimal sequence of the multi-modality therapy has not been established. The goal of the study is to evaluate 6-month local control utilizing pre-operative SRS followed by surgical resection for patients with 1-4 brain metastases. METHODS This prospective, single arm, phase II trial will recruit patients with up to 4 brain metastases and at least one resectable lesion. All lesions will be treated with SRS and symptomatic lesions will be resected within 1-4 days after SRS. Patients will be monitored for 6-month local control, in-brain progression free survival, distant in-brain failure, rate of leptomeningeal spread, radiation necrosis and overall survival. Additionally, we will also perform correlative radiobiological molecular studies to assess the effect of radiation dosing on the tumor tissue and clinical outcomes. We expect that pre-operative SRS to the gross tumor prior to surgical resection will improve local control and decrease leptomeningeal failure. DISCUSSION Our study is the second prospective trial to investigate the efficacy of pre-operative SRS in the treatment of multiple BMs. In addition, the correlative molecular studies will be the first to investigate early response of BMs at a cellular and genetic level in response to radiation doses and potentially provide molecular prognostic markers for local control and overall survival. TRIAL REGISTRATION Clinicaltrials.gov identifier: NCT03398694 (registration date: January 12, 2018).
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Affiliation(s)
- Wei X. Huff
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Namita Agrawal
- Department of Radiation Oncology, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Indiana, USA
| | - Scott Shapiro
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - James Miller
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Charles Kulwin
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Mitesh Shah
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Jesse J. Savage
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Troy Payner
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
| | - Alexander Vortmeyer
- Department of Pathology, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Indiana, USA
| | - Gordon Watson
- Department of Radiation Oncology, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Indiana, USA
| | - Mahua Dey
- Department of Neurosurgery, Indiana University School of Medicine, Indiana University Purdue University Indianapolis, Neuroscience Research Building, 320 W 15th Street, NB 400A, Indiana, IN 46202 USA
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Masucci GL. Hypofractionated Radiation Therapy for Large Brain Metastases. Front Oncol 2018; 8:379. [PMID: 30333955 PMCID: PMC6176274 DOI: 10.3389/fonc.2018.00379] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2018] [Accepted: 08/23/2018] [Indexed: 12/21/2022] Open
Abstract
Single fraction radiosurgery (SRS) treatment is an effective and recognized alternative to whole brain radiation for brain metastasis. However, SRS is not always possible, especially in tumors of a larger diameter where the administration of high dose in a single fraction is limited by the possibility of acute and late side effects and the dose to the surrounding organs at risk. Hypofractionated radiation therapy allows the delivery of high doses of radiation per fraction while minimizing adverse events, all the while maintaining good local control of lesions. The optimal dose fractionation has however not been established. This overwiew presents available evidence and rationale supporting usage of hypofractionated radiation therapy in the treatment of large brain metastases.
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Affiliation(s)
- Giuseppina Laura Masucci
- Department of Radiation Oncology, Centre Hospitalier de l'Université de Montréal, Montreal, QC, Canada
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Higuchi Y, Yamamoto M, Serizawa T, Aiyama H, Sato Y, Barfod BE. Modern management for brain metastasis patients using stereotactic radiosurgery: literature review and the authors' gamma knife treatment experiences. Cancer Manag Res 2018; 10:1889-1899. [PMID: 30013395 PMCID: PMC6038887 DOI: 10.2147/cmar.s116718] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Historically, whole brain radiotherapy was administered to most patients with brain metastases. However, over the past three decades, stereotactic radiosurgery (SRS), targeted at individual cranial lesions, has been accepted widely. In this study, based on the authors' experiences along with published data, recent trends in SRS for brain metastases are discussed. This article focuses on the following issues: 1) How many tumors can or should be treated with SRS? 2) Two-/three-staged SRS for relatively large tumors, 3) post- or preoperative SRS, and 4) repeat SRS.
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Affiliation(s)
- Yoshinori Higuchi
- Department of Neurological Surgery, Chiba University Graduate School of Medicine, Chiba, Japan
| | | | - Toru Serizawa
- Tokyo Gamma Unit Center, Tsukiji Neurological Clinic, Tokyo, Japan
| | | | - Yasunori Sato
- Department of Global Clinical Research, Chiba University Graduate School of Medicine, Chiba, Japan
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Song TW, Kim IY, Jung S, Jung TY, Moon KS, Jang WY. Resection and Observation for Brain Metastasis without Prompt Postoperative Radiation Therapy. J Korean Neurosurg Soc 2017; 60:667-675. [PMID: 29142626 PMCID: PMC5678052 DOI: 10.3340/jkns.2017.0404.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2017] [Revised: 08/11/2017] [Accepted: 09/06/2017] [Indexed: 11/27/2022] Open
Abstract
Objective Total resection without consecutive postoperative whole brain radiation therapy is indicated for patients with a single or two sites of brain metastasis, with close follow-up by serial magnetic resonance imaging (MRI). In this study, we explored the effectiveness, usefulness, and safety of this follow-up regimen. Methods From January 2006 to December 2015, a total of 109 patients (76 males, 33 females) underwent tumor resection as the first treatment for brain metastases (97 patients with single metastases, 12 with two metastases). The mean age was 59.8 years (range 27-80). The location of the 121 tumors in the 109 patients was supratentorial (n=98) and in the cerebellum (n=23). The origin of the primary cancers was lung (n=45), breast (n=17), gastrointestinal tract (n=18), hepatobiliary system (n=8), kidney (n=7), others (n=11), and unknown origin (n=3). The 121 tumors were totally resected. Follow-up involved regular clinical and MRI assessments. Recurrence-free survival (RFS) and overall survival (OS) after tumor resection were analyzed by Kaplan-Meier methods based on clinical prognostic factors. Results During the follow-up, MRI scans were done for 85 patients (78%) with 97 tumors. Fifty-six of the 97 tumors showed no recurrence without adjuvant local treatment, representing a numerical tumor recurrence-free rate of 57.7%. Mean and median RFS was 13.6 and 5.3 months, respectively. Kaplan-Meier analysis revealed the cerebellar location of the tumor as the only statistically significant prognostic factor related to RFS (p=0.020). Mean and median OS was 15.2 and 8.1 months, respectively. There were no significant prognostic factors related to OS. The survival rate at one year was 8.2% (9 of 109). Conclusion With close and regular clinical and image follow-up, initial postoperative observation without prompt postoperative radiation therapy can be applied in patients of brain metastasi(e)s when both the tumor(s) are completely resected.
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Affiliation(s)
- Tae-Wook Song
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea
| | - In-Young Kim
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Department of Neurosurgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Shin Jung
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Department of Neurosurgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Tae-Young Jung
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Department of Neurosurgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Kyung-Sub Moon
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Department of Neurosurgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
| | - Woo-Youl Jang
- Brain Tumor Clinic & Gamma Knife Center, Department of Neurosurgery, Chonnam National University Hwasun Hospital, Chonnam National University Medical School, Hwasun, Korea.,Department of Neurosurgery, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju, Korea
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Dose painting with Gamma Knife: Two techniques for delivering different doses to areas of recurrent or residual tumor after resection of brain metastases. Pract Radiat Oncol 2015; 5:390-7. [PMID: 26412338 DOI: 10.1016/j.prro.2015.08.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2015] [Revised: 08/05/2015] [Accepted: 08/06/2015] [Indexed: 11/20/2022]
Abstract
PURPOSE We investigated the feasibility of using Gamma Knife (GK) radiosurgery for "dose painting" to deliver higher doses to residual or recurrent nodules and surgical cavity after resection of brain metastases. METHODS AND MATERIALS Two integrated boost techniques were developed with GK. The single-target technique delineated both the surgical cavity (cavity) and gross disease (nodule) as a single target. Dose was prescribed to the target with the goal of covering the nodule with a higher dose. The 2-target technique delineated the cavity and nodule as separate target volumes, each prescribed to its own dose and planned separately. Two cases were used to illustrate each technique. The single-target technique was used to deliver 16 Gy to a smaller cavity (7 cm(3)) and a 20-Gy integrated boost to 2 nodules (case 1). The 2-target technique was used to deliver 12 Gy to a larger cavity (21.5 cm(3)) and 20 Gy to a single nodule (case 2). RESULTS For both cases, the cavity coverage with the prescribed dose was 100% with the standard plan and integrated boost techniques. For case 1, compared with a standard plan, the single-target technique improved the 20-Gy nodule coverage from 89.7% (nodule 1) and 97.9% (nodule 2) to 100% (both) and increased the minimum dose from 16.6 Gy to 20.8 Gy (nodule 1) and from 19.4 Gy to 20.8 Gy (nodule 2). For case 2, compared with a standard plan, the 2-target technique improved the 20-Gy nodule coverage from 4% to 100% and the minimum dose from 13.8 Gy to 21 Gy. CONCLUSIONS Both GK integrated boost approaches allowed for effective delivery of higher doses to residual or recurrent nodules in a surgical cavity. In our experience, the single-target technique works well for small cavities, whereas the 2-target technique is well suited for larger cavities.
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Amsbaugh MJ, Boling W, Woo S. Tumor bed radiosurgery: an emerging treatment for brain metastases. J Neurooncol 2015; 123:197-203. [PMID: 25911296 DOI: 10.1007/s11060-015-1789-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Accepted: 04/20/2015] [Indexed: 11/26/2022]
Abstract
While typically used for treating small intact brain metastases, an increasing body of literature examining tumor bed directed stereotactic radiosurgery (SRS) is emerging. There are now over 1000 published cases treated with this approach, and the first prospective trial was recently published. The ideal sequencing of tumor bed SRS is unclear. Current approaches include, a neoadjuvant treatment before resection, alone as an adjuvant after resection, and following surgery combined with whole brain radiotherapy either as an adjuvant or salvage treatment. Based on available evidence, adjuvant stereotactic radiosurgery improves local control following surgery, reduces the number of patients who require whole brain radiotherapy, and is well tolerated. While results from published series vary, heterogeneity in both patient populations and methods of reporting results make comparisons difficult. Additional prospective data, including randomized trials are needed to confirm equivalent outcomes to the current standard of care. We review the current literature, identify areas of ongoing contention, and highlight ongoing studies.
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Affiliation(s)
- Mark J Amsbaugh
- Department of Radiation Oncology, Brown Cancer Center, University of Louisville, 529 S. Jackson Street, Louisville, KY, 40206, USA,
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Smith TR, Lall RR, Lall RR, Abecassis IJ, Arnaout OM, Marymont MH, Swanson KR, Chandler JP. Survival after surgery and stereotactic radiosurgery for patients with multiple intracranial metastases: results of a single-center retrospective study. J Neurosurg 2014; 121:839-45. [PMID: 24857242 DOI: 10.3171/2014.4.jns13789] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Patients with systemic cancer and a single brain metastasis who undergo treatment with resection plus radiotherapy live longer and have a better quality of life than those treated with radiotherapy alone. Historically, whole-brain radiotherapy (WBRT) has been the mainstay of radiation therapy; however, it is associated with significant delayed neurocognitive sequelae. In this study, the authors looked at survival in patients with single and multiple intracranial metastases who had undergone surgery and adjuvant stereotactic radiosurgery (SRS) to the tumor bed and synchronous lesions. METHODS The authors retrospectively reviewed the records from an 8-year period at a single institution for consecutive patients with brain metastases treated via complete resection of dominant lesions and adjuvant radiosurgery. The cohort was analyzed for time to local progression, synchronous lesion progression, new intracranial lesion development, systemic progression, and overall survival. The Kaplan-Meier method (stratified by age, sex, tumor histology, and number of intracranial lesions prior to surgery) was used to calculate both progression-free and overall survival. A Cox proportional-hazards regression model was also fitted with the number of intracranial lesions as the predictor and survival as the outcome controlling for disease severity, age, sex, and primary histology. RESULTS The median overall follow-up among the 150-person cohort eligible for analysis was 17 months. Patients had an average age of 46.2 years (range 16-82 years), and 62.7% were female. The mean (± standard deviation) number of intracranial lesions per patient was 2.5 ± 2.3. The mean time between surgery and stereotactic radiosurgery (SRS) was 3.2 ± 4.1 weeks. Primary cancers included lung cancer (43.3%), breast cancer (21.3%), melanoma (10.0%), renal cell carcinoma (6.7%), and colon cancer (6.7%). The average number of isocenters per treated lesion was 7.6 ± 6.6, and the average treatment dose was 17.8 ± 2.8 Gy. One-year survival for patients in this cohort was 52%, and the 1-year local control rate was 77%. The median (±standard error) overall survival was 13.2 ± 1.9 months. There was no difference in survival between patients with a single lesion and those with multiple lesions (p = 0.319) after controlling for age, sex, and histology of primary tumor. Patients with primary breast histology had the greatest overall median survival (22.9 ± 6.2 months); patients with colorectal cancer had the shortest overall median survival (5.3 ± 1.8 months). The most common cause of death in this series was systemic progression (79%). CONCLUSIONS These results confirm that 1-year survival for patients with multiple intracranial metastases treated with resection followed by SRS to both the tumor bed and synchronous lesions is similar to established outcomes for patients with a single intracranial metastasis.
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Gans JH, Raper DMS, Shah AH, Bregy A, Heros D, Lally BE, Morcos JJ, Heros RC, Komotar RJ. The role of radiosurgery to the tumor bed after resection of brain metastases. Neurosurgery 2013. [PMID: 23208065 DOI: 10.1227/neu.0b013e31827fcd60] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Optimal postoperative management paradigm for brain metastases remains controversial. OBJECTIVE To conduct a systematic review of the literature to understand the role of postoperative stereotactic radiosurgery after resection of brain metastases. METHODS We performed a MEDLINE search of the literature to identify series of patients with brain metastases treated with stereotactic radiosurgery after surgical resection. Outcomes including overall survival, local control, distant intracranial failure, and salvage therapy use were recorded. Patient, tumor, and treatment factors were correlated with outcomes through the use of the Pearson correlation and 2-way Student t test as appropriate. RESULTS Fourteen studies involving 629 patients were included. Median survival for all studies was 14 months. Local control was correlated with the median volume treated with radiosurgery (r = -0.766, P < .05) and with the rate of gross total resection (r = .728, P < .03). Mean crude local control was 83%; 1-year local control was 85%. Distant intracranial failure occurred in 49% of cases, and salvage whole-brain radiation therapy was required in 29% of cases. Use of a radiosurgical margin did not lead to increased local control or overall survival. CONCLUSION Our systematic review supports the use of radiosurgery as a safe and effective strategy for adjuvant treatment of brain metastases, particularly when gross total resection has been achieved. With all limitations of comparisons between studies, no increase in local recurrence or decrease in overall survival compared with rates with adjuvant whole-brain radiation therapy was found.
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Affiliation(s)
- Jared H Gans
- University of Miami Miller School of Medicine, University of Virginia, Charlottesville, Virginia 33136, USA.
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Al-Omair A, Soliman H, Xu W, Karotki A, Mainprize T, Phan N, Das S, Keith J, Yeung R, Perry J, Tsao M, Sahgal A. Hypofractionated stereotactic radiotherapy in five daily fractions for post-operative surgical cavities in brain metastases patients with and without prior whole brain radiation. Technol Cancer Res Treat 2013; 12:493-9. [PMID: 23617283 PMCID: PMC4527429 DOI: 10.7785/tcrt.2012.500336] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Our purpose was to report efficacy of hypofractionated cavity stereotactic radiotherapy (HCSRT) in patients with and without prior whole brain radiotherapy (WBRT). 32 surgical cavities in 30 patients (20 patients/21 cavities had no prior WBRT and 10 patients/11 cavities had prior WBRT) were treated with image-guided linac stereotactic radiotherapy. 7 of the 10 prior WBRT patients had "resistant" local disease given prior surgery, post-operative WBRT and a re-operation, followed by salvage HCSRT. The clinical target volume was the post-surgical cavity, and a 2-mm margin applied as planning target volume. The median total dose was 30 Gy (range: 25-37.5 Gy) in 5 fractions. In the no prior and prior WBRT cohorts, the median follow-up was 9.7 months (range: 3.0-23.6) and 15.3 months (range: 2.9-39.7), the median survival was 23.6 months and 39.7 months, and the 1-year cavity local recurrence progression- free survival (LRFS) was 79 and 100%, respectively. At 18 months the LRFS dropped to 29% in the prior WBRT cohort. Grade 3 radiation necrosis occurred in 3 prior WBRT patients. We report favorable outcomes with HCSRT, and well selected patients with prior WBRT and "resistant" disease may have an extended survival favoring aggressive salvage HCSRT at a moderate risk of radiation necrosis.
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Affiliation(s)
- Ameen Al-Omair
- Department of Radiation Oncology, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Ontario, Canada.
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Lieberson RE, Veeravagu A, Eckermann JM, Doty JR, Jiang B, Andrews R, Chang SD. Intramedullary spinal cord metastasis from prostate carcinoma: a case report. J Med Case Rep 2012; 6:139. [PMID: 22657386 PMCID: PMC3419088 DOI: 10.1186/1752-1947-6-139] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2012] [Accepted: 03/12/2012] [Indexed: 11/29/2022] Open
Abstract
Introduction Although vertebral and epidural metastases are common, intradural metastases and intramedullary spinal cord metastases are rare. The indications for the treatment of intramedullary spinal cord metastases remain controversial. We present the first biopsy-proven case of an intramedullary spinal cord metastasis from adenocarcinoma of the prostate. Case presentation Our patient was a 68-year-old right-handed Caucasian man with a Gleason grade 4 + 3 prostate adenocarcinoma who had previously undergone a prostatectomy, androgen blockade and transurethral debulking. He presented with new-onset saddle anesthesia and fecal incontinence. Magnetic resonance imaging demonstrated a spindle-shaped intramedullary lesion of the conus medullaris. Our patient underwent decompression and an excisional biopsy; the lesion’s pathology was consistent with metastatic adenocarcinoma of the prostate. Postoperatively, our patient received CyberKnife® radiosurgery to the resection cavity at a marginal dose of 27Gy to the 85% isodose line. At three months follow-up, our patient remains neurologically stable with no new deficits or lesions. Conclusions We review the literature and discuss the indications for surgery and radiosurgery for intramedullary spinal cord metastases. We also report the novel use of stereotactic radiosurgery to sterilize the resection cavity following an excisional biopsy of the metastasis.
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Affiliation(s)
- Robert E Lieberson
- Department of Neurosurgery, Stanford University Medical Center, Stanford, CA, USA.
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Mut M. Surgical treatment of brain metastasis: A review. Clin Neurol Neurosurg 2012; 114:1-8. [PMID: 22047649 DOI: 10.1016/j.clineuro.2011.10.013] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2011] [Revised: 10/08/2011] [Accepted: 10/10/2011] [Indexed: 11/15/2022]
Affiliation(s)
- Melike Mut
- Hacettepe University, Department of Neurosurgery, Ankara, Turkey.
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Roberge D, Parney I, Brown PD. Radiosurgery to the postoperative surgical cavity: who needs evidence? Int J Radiat Oncol Biol Phys 2011; 83:486-93. [PMID: 22099047 DOI: 10.1016/j.ijrobp.2011.09.032] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2011] [Revised: 09/05/2011] [Accepted: 09/09/2011] [Indexed: 11/27/2022]
Abstract
There is a growing interest in adjuvant radiosurgery after resection of hematogenous brain metastases. This is exemplified by the approximately 1000 cases reported in mainly retrospective series. These cases fall into four paradigms: adjuvant radiosurgery as an alternative to whole-brain radiotherapy (WBRT), radiosurgery neoadjuvant to the surgical resection, radiosurgery as an intensification of adjuvant WBRT, and adjuvant radiosurgery for patients having failed prior WBRT. These procedures seem well tolerated, with an approximate 5% risk of radiation necrosis. Although crude local control rates for each strategy seem improved over surgery alone, multiple biases make comparisons with standard WBRT difficult without prospective data. Because evidence lags behind clinical practice, an upcoming intergroup trial will aim to clarify the value of the most common tumor bed radiosurgery strategy by randomizing oligometastatic patients between adjuvant WBRT and adjuvant radiosurgery.
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Affiliation(s)
- David Roberge
- Division of Radiation Oncology, Department of Oncology, McGill University, Montreal, QC, Canada.
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Jensen CA, Chan MD, McCoy TP, Bourland JD, deGuzman AF, Ellis TL, Ekstrand KE, McMullen KP, Munley MT, Shaw EG, Urbanic JJ, Tatter SB. Cavity-directed radiosurgery as adjuvant therapy after resection of a brain metastasis. J Neurosurg 2011; 114:1585-91. [PMID: 21166567 PMCID: PMC3789371 DOI: 10.3171/2010.11.jns10939] [Citation(s) in RCA: 124] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT As a strategy to delay or avoid whole-brain radiotherapy (WBRT) after resection of a brain metastasis, the authors used high-resolution MR imaging and cavity-directed radiosurgery for the detection and treatment of further metastases. METHODS Between April 2001 and October 2009, 112 resection cavities in 106 patients with no prior WBRT were treated using radiosurgery directed to the tumor cavity and for any synchronous brain metastases detected on high-resolution MR imaging at the time of radiosurgical planning. A median dose of 17 Gy to the 50% isodose line was prescribed to the gross tumor volume, defined as the rim of enhancement around the resection cavity. Patients were followed up via serial imaging, and new brain metastases were generally treated using additional radiosurgery, with salvage WBRT typically reserved for local treatment failure at a resection cavity, numerous failures, or failures occurring at short time intervals. Local and distant treatment failures were determined based on imaging results. Kaplan-Meier curves were generated to estimate local and distant treatment failure rates, overall survival, neurological cause-specific survival, and time delay to salvage WBRT. RESULTS Radiosurgery was delivered to the resection cavity alone in 57.5% of patients, whereas 24.5% of patients also received treatment for 1 synchronous metastasis, 11.3% also received treatment for 2 synchronous metastases, and 6.6% also received treatment for 3-10 additional lesions. The median overall survival was 10.9 months. Overall survival at 1 year was 46.8%. The local tumor control rate at 1 year was 80.3%. The disease control rate in distant regions of the brain at 1 year was 35.4%, with a median time of 6.9 months to distant failure. Thirty-nine of 106 patients eventually received salvage WBRT, and the median time to salvage WBRT was 12.6 months. Kaplan-Meier estimates showed that the rate of requisite WBRT at 1 year was 45.9%. Neurological cause-specific survival at 1 year was 50.1%. Leptomeningeal failure occurred in 8 patients. One patient had treatment failure within the resection tract. Seven patients required reoperation: 2 for resection cavity recurrence, 3 for radiation necrosis, 1 for hydrocephalus, and 1 for a CSF cutaneous fistula. On multivariate analysis, a preoperative tumor diameter > 3 cm was predictive of local treatment failure. CONCLUSIONS Cavity-directed radiosurgery combined with high-resolution MR imaging detection and radiosurgical treatment of synchronous brain metastases is an effective strategy for delaying and even foregoing WBRT in most patients. This technique provides acceptable local disease control, although distant treatment failure remains significant.
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Affiliation(s)
- Courtney A. Jensen
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Michael D. Chan
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Thomas P. McCoy
- Department of Public Health Sciences, Wake Forest University, Winston-Salem, North Carolina
| | - J. Daniel Bourland
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Allan F. deGuzman
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Thomas L. Ellis
- Department of Neurosurgery, Wake Forest University, Winston-Salem, North Carolina
| | - Kenneth E. Ekstrand
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Kevin P. McMullen
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Michael T. Munley
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Edward G. Shaw
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - James J. Urbanic
- Department of Radiation Oncology, Wake Forest University, Winston-Salem, North Carolina
| | - Stephen B. Tatter
- Department of Neurosurgery, Wake Forest University, Winston-Salem, North Carolina
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Current treatment strategies for brain metastasis and complications from therapeutic techniques: a review of current literature. Am J Clin Oncol 2010; 33:398-407. [PMID: 19675447 DOI: 10.1097/coc.0b013e318194f744] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Each year approximately 170,000 patients are diagnosed with brain metastasis in the United States, making this the most common intracranial tumor in adults. Historically, treatment strategies focused on the use of whole brain radiation therapy (WBRT) for palliation, yielding a median survival time of only 3 to 6 months. The possible effect of WBRT on cognitive function has generated much concern and debate regarding the use of this modality. Thus, the use of WBRT alone, or in conjunction with other treatment modalities should take into account both risks and benefits, to ensure the best patient outcome with regard to disease state and functional status. The advent of technologies permitting local dose-escalation have clearly increased local control rates, and in select patients, even survival, thereby, further intensifying the debate regarding the use of WBRT. Here, we review the use of WBRT, radiosurgery, and resection for the treatment of brain metastases. Further, we will review the use of radiation sensitizers and blood-brain barrier penetrating cytotoxics such as temozolomide. Finally, we will discuss current treatment strategies for possibly maintaining and improving cognitive function for these patients.
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Affiliation(s)
- John H Suh
- Brain Tumor and Neuro-Oncology Center, Department of Radiation Oncology, Cleveland Clinic, Taussig Cancer Institute, Cleveland, OH 44195, USA.
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18
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Fluorescence-guided surgery of metastatic brain tumors using fluorescein sodium. J Clin Neurosci 2009; 17:118-21. [PMID: 19969462 DOI: 10.1016/j.jocn.2009.06.033] [Citation(s) in RCA: 66] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2009] [Revised: 06/17/2009] [Accepted: 06/21/2009] [Indexed: 11/24/2022]
Abstract
We aimed to demonstrate the effectiveness of fluorescence-guided surgery of metastatic brain tumors using fluorescein sodium. The study comprised 38 patients with metastatic brain tumors who underwent tumor resection after intravenous injection of fluorescein sodium. The local recurrence rate was investigated in 36 of the 38 patients, and compared for patients who had undergone surgery only and surgery plus whole-brain radiotherapy (WBRT). In 31 of 36 patients, the tumors had been completely resected using fluorescence-guided surgery. Postoperative WBRT was not performed in 20 of the 31 patients who underwent gross total resection. Although the recurrence rate for these 20 patients was 20%, compared to 9.1% for the 11 patients who also underwent postoperative WBRT, the difference was not statistically significant. Use of fluorescein sodium in metastatic brain tumor surgery may reduce the rate of local recurrence, and thus help improve the quality of life for these patients.
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20
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Iwai Y, Yamanaka K, Yasui T. Boost radiosurgery for treatment of brain metastases after surgical resections. ACTA ACUST UNITED AC 2008; 69:181-6; discussion 186. [PMID: 18261647 DOI: 10.1016/j.surneu.2007.07.008] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2007] [Accepted: 07/03/2007] [Indexed: 11/27/2022]
Abstract
BACKGROUND We evaluated results of resection surgery followed by boost radiosurgery for the treatment of brain metastases. METHODS We treated 21 patients (13 male, 8 female) with surgical resection (subtotal or total) followed by boost radiosurgery. The mean patient age was 61 years (range, 41-80 years); supratentorial lesions were treated in 12 patients, and posterior fossa lesions were treated in 9 patients. The most common primary cancers were lung (24%) and colon (24%). Fifty-three percent of patients had brain metastases only, whereas 47% had extracranial metastases. The radiosurgery dose plan was designed to radiate the operative cavity; the mean treatment volume (50% isodose) was 10.7 mL (range, 3.4-23.3 mL), and the mean marginal dose was 17 Gy (range, 13-20 Gy). RESULTS Local control was achieved in 16 (76%) patients. However, new intracranial lesions developed in 10 patients, and meningeal carcinomatosis occurred in 5 patients. Local tumor recurrence occurred more often for patients treated with lower radiotherapy doses (<18 vs > or =18 Gy, P = .03), and meningeal carcinomatosis occurred more often in patients with posterior fossa lesions (P = 0.05). Gamma knife radiosurgery was performed in 13 patients, and whole-brain radiation was performed in 2 patients. No patients experienced symptomatic radiation injury, and the median survival time was 20 months. CONCLUSIONS Although boost radiosurgery is less invasive and reduces morbidity, the radiosurgical dose must be higher than 18 Gy for the treatment to be most effective. Treatment of lesions of the posterior fossa must be considered carefully because of the higher frequency of meningeal carcinomatosis. Also, we recommend that the surgeons who operate on the metastatic tumors must try to decrease the resected cavity volume and to prevent cerebrospinal fluid dissemination at the operation for posterior fossa lesions.
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Affiliation(s)
- Yoshiyasu Iwai
- Department of Neurosurgery, Osaka City General Hospital, Miyakojima-ku, Osaka 534-0021, Japan.
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