scholarly journals The impact of decompression with instrumentation on local failure following spine stereotactic radiosurgery

2017 ◽  
Vol 27 (4) ◽  
pp. 436-443 ◽  
Author(s):  
Jacob A. Miller ◽  
Ehsan H. Balagamwala ◽  
Camille A. Berriochoa ◽  
Lilyana Angelov ◽  
John H. Suh ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Competing Risks ◽  
Cumulative Incidence ◽  
Vertebral Compression Fracture ◽  
Compression Fracture ◽  
Local Failure ◽  
Control Group ◽  
Spinal Decompression ◽  
Grade 3 ◽  
The Impact

OBJECTIVESpine stereotactic radiosurgery (SRS) is a safe and effective treatment for spinal metastases. However, it is unknown whether this highly conformal radiation technique is suitable at instrumented sites given the potential for microscopic disease seeding. The authors hypothesized that spinal decompression with instrumentation is not associated with increased local failure (LF) following SRS.METHODSA 2:1 propensity-matched retrospective cohort study of patients undergoing SRS for spinal metastasis was conducted. Patients with less than 1 month of radiographic follow-up were excluded. Each SRS treatment with spinal decompression and instrumentation was propensity matched to 2 controls without decompression or instrumentation on the basis of demographic, disease-related, dosimetric, and treatment-site characteristics. Standardized differences were used to assess for balance between matched cohorts.The primary outcome was the 12-month cumulative incidence of LF, with death as a competing risk. Lesions demonstrating any in-field progression were considered LFs. Secondary outcomes of interest were post-SRS pain flare, vertebral compression fracture, instrumentation failure, and any Grade ≥ 3 toxicity. Cumulative incidences analysis was used to estimate LF in each cohort, which were compared via Gray’s test. Multivariate competing-risks regression was then used to adjust for prespecified covariates.RESULTSOf 650 candidates for the control group, 166 were propensity matched to 83 patients with instrumentation. Baseline characteristics were well balanced. The median prescription dose was 16 Gy in each cohort. The 12-month cumulative incidence of LF was not statistically significantly different between cohorts (22.8% [instrumentation] vs 15.8% [control], p = 0.25). After adjusting for the prespecified covariates in a multivariate competing-risks model, decompression with instrumentation did not contribute to a greater risk of LF (HR 1.21, 95% CI 0.74–1.98, p = 0.45). The incidences of post-SRS pain flare (11% vs 14%, p = 0.55), vertebral compression fracture (12% vs 22%, p = 0.04), and Grade ≥ 3 toxicity (1% vs 1%, p = 1.00) were not increased at instrumented sites. No instrumentation failures were observed.CONCLUSIONSIn this propensity-matched analysis, LF and toxicity were similar among cohorts, suggesting that decompression with instrumentation does not significantly impact the efficacy or safety of spine SRS. Accordingly, spinal instrumentation may not be a contraindication to SRS. Future studies comparing SRS to conventional radiotherapy at instrumented sites in matched populations are warranted.

scholarly journals Radiological and clinical outcomes of balloon kyphoplasty for osteoporotic vertebral compression fracture in patients with rheumatoid arthritis

2021 ◽  
Vol 16 (1) ◽  
Author(s):  
Ji Guo ◽  
Weifeng Zhai ◽  
Licheng Wei ◽  
Jianpo Zhang ◽  
Lang Jin ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Vertebral Fractures ◽  
Vertebral Compression Fracture ◽  
Compression Fracture ◽  
Balloon Kyphoplasty ◽  
Cement Leakage ◽  
Osteoporotic Vertebral Compression Fracture ◽  
Control Group ◽  
Compression Rate ◽  
Kyphotic Angle

Abstract Background This study was conducted to investigate the outcomes and complications of balloon kyphoplasty (KP) for the treatment of osteoporotic vertebral compression fracture (OVCF) in patients with rheumatoid arthritis (RA) and compare its radiological and clinical effects with OVCF patients without RA. Methods Ninety-eight patients in the RA group with 158 fractured vertebrae and 114 patients in the control group with 150 vertebrae were involved in this study. Changes in compression rate, local kyphotic angle, visual analog scale (VAS) and Oswestry disability index (ODI) scores, conditions of bone cement leakage, refracture of the operated vertebrae, and new adjacent vertebral fractures were examined after KP. In addition, patients in the RA group were divided into different groups according to the value of erythrocyte sedimentation rate (ESR), c-reactive protein (CRP), and whether they were glucocorticoid users or not to evaluate their influence on the outcomes of KP. Results KP procedure significantly improved the compression rate, local kyphotic angle, and VAS and ODI scores in both RA and control groups (p<0.05). Changes in compression rate and local kyphotic angle in the RA group were significantly larger than that in the control group (p<0.05), and patients with RA suffered more new adjacent vertebral fractures after KP. The outcomes and complications of KP from different ESR or CRP groups did not show significant differences. The incidence of cement leakage in RA patients with glucocorticoid use was significantly higher than those who did not take glucocorticoids. In addition, RA patients with glucocorticoid use suffered more intradiscal leakage and new adjacent vertebral fractures. Conclusions OVCF patients with RA obtained more improvement in compression rate and local kyphotic angle after KP when compared to those without RA, but they suffered more new adjacent vertebral fractures. Intradiscal leakage and new adjacent vertebral fractures occurred more in RA patients with glucocorticoid use. Trial registration Retrospectively registered.

scholarly journals RADT-23. IMPACT OF REIRRADIATION UTILIZING STEREOTACTIC RADIOSURGERY ON RECURRENT GLIOBLASTOMA

2020 ◽  
Vol 22 (Supplement_2) ◽  
pp. ii186-ii186
Author(s):  
O’Dell Patrick ◽  
H Nickols ◽  
R LaRocca ◽  
K Sinicrope ◽  
D Sun ◽  
...  
Keyword(s):  
Stereotactic Radiosurgery ◽  
Median Survival ◽  
High Performance ◽  
Performance Status ◽  
Treatment Options ◽  
Methylation Status ◽  
Initial Therapy ◽  
Recurrent Glioblastoma ◽  
Control Group ◽  
The Impact

Abstract BACKGROUND Patients who have recurrent glioblastoma have limited treatment options. We conducted a retrospective review of patients with recurrent glioblastoma treated with standard initial radiation and temozolomide with tumor treating fields to investigate whether reirradiation using radiosurgery would be associated with improved outcomes. METHODS We reviewed the records of 54 consecutively treated patients with recurrent glioblastoma with ECOG 0 or 1 at recurrence and conducted Kaplan-Meier analysis with Log-rank testing to determine significance between groups. RESULTS We identified 24 patients who were treated without radiation therapy (control) while 30 patients underwent re-irradiation using radiosurgery (ReSRS) with a median total dose of 25Gy in five fractions. All patients had completed standard initial therapy, and there was no difference in the time to recurrence between the two groups (10 months for control, 15 months for ReSRS, [P = 0.17, HR for progression 0.65 (95% CI 0.38-1.13)]. A larger proportion of patients in the control arm (54%) had subtotal or gross total resection of the recurrence compared with the ReSRS group (44%, P &lt; 0.05). The majority of patients had recurrence confirmed with biopsy (18/22 in control group, 25/31 in the ReSRS group). MGMT methylation status did not differ between control vs ReSRS (29% vs. 27%). ReSRS was associated with improved median survival from the time of first recurrence of 11.6 months versus 3.8 months in the control arm [P&lt; 0.0001, HR for death 0.33 (95% CI 0.18-0.6)]. CONCLUSIONS In a group of patients with high performance status diagnosed with recurrent glioblastoma, reirradiation with stereotactic radiosurgery was associated with nearly one year median survival after recurrence. Additional analyses are warranted to determine the impact of concurrent systemic therapies with irradiation and underlying tumor or patient factors to predict outcomes.

Estimating sample size in the presence of competing risks – Cause-specific hazard or cumulative incidence approach?

2015 ◽  
Vol 27 (1) ◽  
pp. 114-125 ◽  
Author(s):  
BC Tai ◽  
ZJ Chen ◽  
D Machin
Keyword(s):  
Sample Size ◽  
Competing Risks ◽  
Cumulative Incidence ◽  
Exponential Model ◽  
Sample Sizes ◽  
Subdistribution Hazard ◽  
Competing Events ◽  
Event Times ◽  
The Impact

In designing randomised clinical trials involving competing risks endpoints, it is important to consider competing events to ensure appropriate determination of sample size. We conduct a simulation study to compare sample sizes obtained from the cause-specific hazard and cumulative incidence (CMI) approaches, by first assuming exponential event times. As the proportional subdistribution hazard assumption does not hold for the CMI exponential (CMIExponential) model, we further investigate the impact of violation of such an assumption by comparing the results obtained from the CMI exponential model with those of a CMI model assuming a Gompertz distribution (CMIGompertz) where the proportional assumption is tenable. The simulation suggests that the CMIExponential approach requires a considerably larger sample size when treatment reduces the hazards of both the main event, A, and the competing risk, B. When treatment has a beneficial effect on A but no effect on B, the sample sizes required by both methods are largely similar, especially for large reduction in the main risk. If treatment has a protective effect on A but adversely affects B, then the sample size required by CMIExponential is notably smaller than cause-specific hazard for small to moderate reduction in the main risk. Further, a smaller sample size is required for CMIGompertz as compared with CMIExponential. The choice between a cause-specific hazard or CMI model in competing risks outcomes has implications on the study design. This should be made on the basis of the clinical question of interest and the validity of the associated model assumption.

Impact of antiviral prophylaxis in HSV positive patients treated with concurrent chemoradiotherapy for head and neck cancer.

2019 ◽  
Vol 37 (15_suppl) ◽  
pp. 6078-6078
Author(s):  
Nathalie Letarte ◽  
Vincent-T. Taillefer ◽  
Céline Marty ◽  
Louise Lambert ◽  
Francine Aubin ◽  
...  
Keyword(s):  
Head And Neck Cancer ◽  
Head And Neck ◽  
Neck Cancer ◽  
Concurrent Chemoradiotherapy ◽  
Locally Advanced ◽  
Control Group ◽  
Antiviral Prophylaxis ◽  
Grade 3 ◽  
Simplex Virus ◽  
The Impact

6078 Background: Chemoradiotherapy used for the treatment of locally advanced head and neck cancer (HNC) causes a high incidence of mucositis that may be accentuated by a reactivation of herpes simplex virus (HSV). To date, no study has evaluated the impact of antivirals used as prophylaxis to prevent mucositis or their severity. Methods: This is a retrospective observational study including patients who received at least one cycle of concurrent chemoradiotherapy for the treatment of head and neck cancer between January 2014 and June 2017 at the Centre hospitalier de l’Université de Montréal (CHUM). HSV negative patients were excluded. After approval by the IRB, we compared the incidence and severity of mucositis in HSV positive patients who started an antiviral prophylaxis before cycle 1 or 2 (prophylaxis group) to HSV+/unknown HSV patients who did not receive antiviral prophylaxis (control group). Emergency visits and hospitalizations related to mucositis were collected. Mucositis were assessed regularly by radiation oncologists during the treatment. Results: Of 482 patients who received concurrent chemoradiotherapy for HNC, 75 were HSV negative and 407 were included in this study. In the group with (n = 94) and without prophylaxis (n = 313), patients received carboplatin and 5-FU (77% vs 62%) and cisplatin (23% vs 38%) with concurrent radiation respectively. The rate of all grade mucositis in patients with and without prophylaxis (99% vs 96%; p = 0.19) was not statistically significant. The rate of grade 3 and 4 mucositis (42% vs 49%; p = 0.29), the rate of emergency visit (29% vs 28%; p = 0.91) and hospitalization (9% vs 8%; p = 0.80) were not statistically significant between each group. However, in a subgroup of patient receiving carboplatin and 5-FU, antiviral prophylaxis seems to decrease significantly the rate of grade 3 (49% vs 63%; p = 0.04). Conclusions: The addition of antiviral prophylaxis in HSV positive in patients undergoing concurrent chemoradiotherapy for locally advanced HNC didn’t decrease the rate of all grade mucositis. In the subgroup of patients receiving carboplatin and 5-FU mainly of oropharynx origin, HSV prophylaxis decreased the severity of mucositis.

scholarly journals Radiation-induced vertebral compression fracture following spine stereotactic radiosurgery: clinicopathological correlation

2013 ◽  
Vol 18 (5) ◽  
pp. 430-435 ◽  
Author(s):  
Ameen Al-Omair ◽  
Roger Smith ◽  
Tim-Rasmus Kiehl ◽  
Louis Lao ◽  
Eugene Yu ◽  
...  
Keyword(s):  
Tumor Progression ◽  
Stereotactic Radiosurgery ◽  
Vertebral Compression Fracture ◽  
Compression Fracture ◽  
Spinal Tumors ◽  
High Dose ◽  
Diagnostic Challenge ◽  
New Era ◽  
Radiation Induced ◽  
Dose Radiation

Spine stereotactic radiosurgery (SRS) is increasingly being used to treat metastatic spinal tumors. As the experience matures, high rates of vertebral compression fracture (VCF) are being observed. What is unknown is the mechanism of action; it has been postulated but not confirmed that radiation itself is a contributing factor. This case report describes 2 patients who were treated with spine SRS who subsequently developed signal changes on MRI consistent with tumor progression and VCF; however, biopsy confirmed a diagnosis of radiation-induced necrosis in 1 patient and fibrosis in the other. Radionecrosis is a rare and serious side effect of high-dose radiation therapy and represents a diagnostic challenge, as the authors have learned from years of experience with brain SRS. These cases highlight the issues in the new era of spine SRS with respect to relying on imaging alone as a means of determining true tumor progression. In those scenarios in which it is unclear based on imaging if true tumor progression has occurred, the authors recommend biopsy to rule out radiation-induced effects within the bone prior to initiating salvage therapies.

scholarly journals Impact of Different Sarcopenia Stages on the Postoperative New Osteoporotic Vertebral Compression Fracture After Percutaneous Kyphoplasty

2021 ◽  
Author(s):  
Chaowei Lin ◽  
Minyu Zhu ◽  
Kelun Huang ◽  
Sheng Lu ◽  
Honglin Teng
Keyword(s):  
Risk Factors ◽  
Vertebral Compression Fracture ◽  
Univariate Analysis ◽  
Compression Fracture ◽  
Osteoporotic Vertebral Compression Fracture ◽  
Advanced Age ◽  
Percutaneous Kyphoplasty ◽  
European Working ◽  
Independent Risk Factors ◽  
The Impact

Abstract PurposeThe purpose of this study was to evaluate the impact of different sarcopenia stages on osteoporotic vertebral compression refracture (OVCRF) and identify other risk factors of new osteoporotic vertebral compression fracture (OVCF).MethodsWe conducted a large, retrospective study of patients who underwent percutaneous kyphoplasty (PKP) for OVCF. Sarcopenia was staged as “presarcopenia”, “sarcopenia”, and “severe sarcopenia” according to the definition of the European Working Group on Sarcopenia in Older People. Univariate and multivariate analyses evaluating the risk factors for OVCRF were performed. ResultsA total of 329 patients were included, in which 20.4%, 13.1%, and 7.3% of the patients were identified as having “presarcopenia”, “sarcopenia”, and “severe sarcopenia” respectively. Advanced sarcopenia stage was associated with lower BMI, lower serum albumin level and higher NRS 2002 scores. Subsequent fractures developed in 72 (21.8 %) of 329 patients during the one year follow-up. In univariate analysis, female (p = 0.012), advanced age (≥ 75 years; p = 0.004), lower BMD (p =0.000), stage of sarcopenia (p = 0.009) were associated with OVCRFs. Multivariable analysis revealed that female (OR 6.325; 95% CI 2.176-18.368, p = 0.001), age (OR 1.863; 95% CI 1.002-3.464, p =0.049), lower BMD (OR 1.736; 95% CI 1.294-2.328, p = 0.000), sarcopenia (OR 2.536; 95% CI 1.130-5.692, p = 0.024) and severe sarcopenia (OR 4.579; 95% CI 1.615-12.968, p = 0.004) were independent risk factors of OVCRFs. ConclusionsSarcopenia and severe sarcopenia were independent risk factors for OVCRF, as well as low BMD, advanced age and female.

scholarly journals Radiological and clinical effect of balloon kyphoplasty for the management of rheumatoid arthritis patients with osteoporotic vertebral compression fracture

2020 ◽  
Author(s):  
Ji Guo ◽  
Weifeng Zhai ◽  
Licheng Wei ◽  
Jianpo Zhang ◽  
Lang Jin ◽  
...  
Keyword(s):  
Rheumatoid Arthritis ◽  
Vertebral Compression Fracture ◽  
Compression Fracture ◽  
Balloon Kyphoplasty ◽  
Cement Leakage ◽  
Osteoporotic Vertebral Compression Fracture ◽  
Control Group ◽  
Compression Rate ◽  
Kyphotic Angle ◽  
Vertebral Bodies

Abstract Objective: This study was conducted to investigate the outcome of percutaneous balloon kyphoplasty (KP) for the treatment of osteoporotic vertebral compression fracture(OVCF) in patients with rheumatoid arthritis (RA) and analyze the influence of erythrocyte sedimentation rate (ESR), c-reactive protein (CRP), injected cement volume and duration of taking glucocorticoid on the outcome of KP procedure. Methods: A total of 39 RA patients (63 vertebral bodies) and 38 patients (50 vertebral bodies) without RA received KP management for OVCF. Changes in vertebral compression rate, local kyphotic angle, conditions of bone cement leakage, visual analogue scale (VAS) and Oswestry disability index (ODI) scores were evaluated for radiological and clinical outcomes of KP procedure. In addition, 39 OVCF patients with RA were divided into different groups according to the value of ESR, CRP, injected cement volume and duration of taking glucocorticoid to evaluate their influence on the outcomes of KP procedure.Results: The KP procedure significantly improved the compression rate, local kyphotic angle, VAS and ODI scores in both RA group and control group. The compression rate increased 11.56±3.8% in RA group which is significantly larger than the control group(p<0.05). The change of local kyphotic angle in RA group was 3.77±1.9, which is also larger than that in control group(p<0.05). Whereas, the changes of VAS and ODI scores were not significantly different between the two groups. Besides, radiological and clinical outcomes were not significantly different among the groups of different ESR, CRP, injected cement volume and duration of taking glucocorticoid no matter before or 1 year after the KP procedure, but 44% RA patients who take glucocorticoid for over 10 years had cement leakage after the KP procedure which is significantly higher than the group of RA patients with less than 10 years glucocorticoid use(p<0.05). In addition, 7 intradiscal cement leakage occurred in patients take glucocorticoid over 10 years where as no intradiscal leakage showed up in its control group(p<0.01).Conclusion: KP procedure was effective for OVCF patients with or without RA, for restoring vertebral body height, reducing local kyphotic angle, relieving pain and recovering spinal function. Compared to the control group, RA patients received more improvement in compression rate and local kyphotic angle after the operation. Intradiscal leakage occurred more in patients who take glucocorticoid for over 10 years.

scholarly journals Effects of rosuvastatin and zoledronic acid in combination on the recovery of senile osteoporotic vertebral compression fracture following percutaneous vertebroplasty

2020 ◽  
Vol 48 (5) ◽  
pp. 030006052092539 ◽  
Author(s):  
Hong Li ◽  
Yu Wang ◽  
Rui Wang ◽  
Lei Yue ◽  
Shunlun Chen ◽  
...  
Keyword(s):  
Zoledronic Acid ◽  
Bone Density ◽  
Vertebral Compression Fracture ◽  
Percutaneous Vertebroplasty ◽  
Compression Fracture ◽  
Osteoporotic Vertebral Compression Fracture ◽  
Post Treatment ◽  
Control Group ◽  
Type I ◽  
Observation Group

Objectives This study analyzed the effects of rosuvastatin and zoledronic acid in combination on patient recovery following percutaneous vertebroplasty (PVP) that was performed to treat senile osteoporotic vertebral compression. Methods Senile patients with osteoporotic vertebral compression fracture (n = 120) were included in this retrospective study, and they were classified into two groups. Those in the control group (n = 60) were treated with PVP + caltrate and those in the observation group (n = 60) received this treatment with combined zoledronic acid and rosuvastatin. Between-group comparisons were made at both pre- and post-treatment regarding bone density, type I procollagen peptide (CTX) and bone-specific alkaline phosphatase (BAP) levels, visual analog scale (VAS) score, Oswestry Disability Index (ODI) score, and adjacent centrum refracture. Results Bone density was higher and BAP and CTX levels as well as ODI and VAS scores were lower at post-treatment in the observation group compared with the control group. The refracture rate in the observation group was lower compared with the control group. Conclusion Treatment with a combination of rosuvastatin and zoledronic acid following PVP can improve the condition of senile osteoporotic vertebral compression fracture and patient’s functional status, and it can also alleviate pain.

Overall survival and response to radiation and targeted therapies among patients with renal cell carcinoma brain metastases

2020 ◽  
Vol 132 (1) ◽  
pp. 188-196 ◽  
Author(s):  
Aditya Juloori ◽  
Jacob A. Miller ◽  
Shireen Parsai ◽  
Rupesh Kotecha ◽  
Manmeet S. Ahluwalia ◽  
...  
Keyword(s):  
Renal Cell Carcinoma ◽  
Overall Survival ◽  
Multivariate Analysis ◽  
Cell Carcinoma ◽  
Targeted Therapies ◽  
Cumulative Incidence ◽  
Renal Cell ◽  
Radiation Necrosis ◽  
Local Failure ◽  
The Impact

OBJECTIVEThe object of this retrospective study was to investigate the impact of targeted therapies on overall survival (OS), distant intracranial failure, local failure, and radiation necrosis among patients treated with radiation therapy for renal cell carcinoma (RCC) metastases to the brain.METHODSAll patients diagnosed with RCC brain metastasis (BM) between 1998 and 2015 at a single institution were included in this study. The primary outcome was OS, and secondary outcomes included local failure, distant intracranial failure, and radiation necrosis. The timing of targeted therapies was recorded. Multivariate Cox proportional-hazards regression was used to model OS, while multivariate competing-risks regression was used to model local failure, distant intracranial failure, and radiation necrosis, with death as a competing risk.RESULTSThree hundred seventy-six patients presented with 912 RCC BMs. Median OS was 9.7 months. Consistent with the previously validated diagnosis-specific graded prognostic assessment (DS-GPA) for RCC BM, Karnofsky Performance Status (KPS) and number of BMs were the only factors prognostic for OS. One hundred forty-seven patients (39%) received vascular endothelial growth factor receptor (VEGFR) tyrosine kinase inhibitors (TKIs). Median OS was significantly greater among patients receiving TKIs (16.8 vs 7.3 months, p < 0.001). Following multivariate analysis, KPS, number of metastases, and TKI use remained significantly associated with OS.The crude incidence of local failure was 14.9%, with a 12-month cumulative incidence of 13.4%. TKIs did not significantly decrease the 12-month cumulative incidence of local failure (11.4% vs 14.5%, p = 0.11). Following multivariate analysis, age, number of BMs, and lesion size remained associated with local failure. The 12-month cumulative incidence of radiation necrosis was 8.0%. Use of TKIs within 30 days of SRS was associated with a significantly increased 12-month cumulative incidence of radiation necrosis (10.9% vs 6.4%, p = 0.04).CONCLUSIONSUse of targeted therapies in patients with RCC BM treated with intracranial SRS was associated with improved OS. However, the use of TKIs within 30 days of SRS increases the rate of radiation necrosis without improving local control or reducing distant intracranial failure. Prospective studies are warranted to determine the optimal timing to reduce the rate of necrosis without detracting from survival.

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