A Pragmatic Approach to Cancer Staging Schild, Steven E; Wong, William W
International journal of radiation oncology, biology, physics,
11/2020, Letnik:
108, Številka:
3
Journal Article
Abstract
Background
Radiotherapy of head-and-neck cancer (SCCHN) is often associated with acute toxicity. In a previous trial, daily reminders by staff members to perform skin care resulted in less ...dermatitis. This randomized trial investigated whether a mobile application can replace these reminders.
Methods
Patients were stratified according to tumor site, treatment and center. Fifty-three patients were eligible for per-protocol-set (25 with, 28 without app). Primary endpoint was grade ≥ 2 dermatitis until 60 Gy. Secondary endpoints included dermatitis grade ≥ 2 until end of radiotherapy (EOT), dermatitis grade ≥ 3, and mucositis grade ≥ 2 and ≥ 3.
Results
After an interim analysis, the study was terminated (delayed and slow accrual). Until 60 Gy, grade ≥ 2 dermatitis rates were 72% with vs. 82% without app (
p
= 0.38), grade ≥ 3 dermatitis rates 20% vs. 11% (
p
= 0.45). Until EOT, grade ≥ 2 and ≥ 3 dermatitis rates were 72% vs. 86% (
p
= 0.22) and 24% vs. 18% (
p
= 0.58). Until 60 Gy, grade ≥ 2 and ≥ 3 mucositis rates were 76% vs. 82% (
p
= 0.58) and 20% vs. 36% (
p
= 0.20). Until EOT, corresponding mucositis rates were 76% vs. 82% (
p
= 0.58) and 28% vs. 43% (
p
= 0.26).
Conclusion
Given the limitations of this trial, the reminder app led to non-significant reduction of grade ≥ 2 dermatitis, grade ≥ 2 mucositis and ≥ 3 mucositis. Additional studies are required to define the value of reminder apps during radiotherapy for SCCHN.
Personalized treatment for low-grade gliomas likely improves patient outcomes. This study aimed to identify predictors of local control and survival.
Twenty-five patients irradiated for grade II ...gliomas were retrospectively analyzed. Irradiation was performed after biopsy (n=6) or incomplete resection (n=19). Nineteen patients received additional chemotherapy. Eight factors were analyzed, namely the number of glioma sites, cumulative maximum diameter, radiotherapy technique, Karnofsky performance score (KPS), gender, age, resection and chemotherapy.
On univariate analysis, trends for associations with local control were found for cumulative maximum diameter ≤43 mm (p=0.087) and age ≤45 years (p=0.065). In the Cox regression analysis, cumulative maximum diameter maintained significance (p=0.046). On univariate analysis, KPS 90-100 (p=0.039) and female gender (p=0.022) were significantly associated with better survival. In the Cox regression analysis, both KPS (p=0.039) and gender (p=0.016) were significant.
Independent predictors of local control and survival were identified that can contribute to better treatment personalization.
Gliomas are often associated with symptoms including seizures. Most patients with high-grade gliomas are treated with radiotherapy or radio-chemotherapy. Since irradiation causes inflammation, it may ...initially aggravate symptoms. Studies focusing on seizure activity during radiotherapy for gliomas are not available. Such knowledge may improve patient monitoring and anti-epileptic treatment. This study evaluates seizure activity during radiotherapy for high-grade gliomas.
The primary objective this prospective interventional study is the evaluation of seizure activity during a course of radiotherapy for high-grade gliomas. Progression of seizure activity is defined as increased frequency of seizures by > 50%, increased severity of seizures, or initiation/increase by ≥25% of anti-epileptic medication. Seizure frequency up to 6 weeks following radiotherapy and electroencephalography activity typical for epilepsy will also be evaluated. Patients keep a seizure diary during and up to 6 weeks following radiotherapy. Every day, they will document number (and type) of seizures and anti-epileptic medication. Once a week, the findings of the diary are checked and discussed with a neurologist to initiate or adjust anti-epileptic medication, if necessary. Patients complete a questionnaire regarding their satisfaction with the seizure diary. If the dissatisfaction rate is > 40%, the seizure diary will be considered not suitable for the investigated indication. Thirty-five patients (32 patients plus drop-outs) should be enrolled. With this sample size, a one-sample binomial test with a one-sided significance level of 2.5% has a power of 80% to yield statistical significance, if the rate of patients with progression of seizure activity is 30% (rate under the alternative hypothesis), assuming a 'natural' background progression-rate of 10% without radiotherapy (null hypothesis).
If an increase in seizure activity during a course of radiotherapy for high-grade glioma occurs, the findings of this study may pave the way for a larger prospective trial and will likely lead to closer patient monitoring and better anti-epileptic treatment.
clinicaltrials.gov ( NCT04552756 ); registered on 16th of September, 2020.
The prognoses of patients with grade III gliomas require improvement, which may be achieved with personalized care. We aimed to identify prognostic factors to facilitate the process of treatment ...personalization.
Eight factors were analyzed for local tumor control and survival in 44 patients irradiated for grade III glioma. These factors included location and size of glioma, number of glioma sites, performance status, gender, age, neurosurgical intervention and chemotherapy.
In the Cox regression analyses, frontal location (risk ratio=4.41, p=0.048) and unifocal glioma (risk ratio=4.65, p=0.034) were associated with improved local control, and unifocal glioma with improved survival (risk ratio=6.12, p=0.033). In addition, trends for better survival were observed for frontal location (p=0.093), age ≤49 years (p=0.070), upfront resection (p=0.099) and chemotherapy (p=0.066) on univariate analyses.
Independent predictors of local tumor control and survival were identified that can be helpful for personalizing treatment and designing clinical trials.
Background/Aim: Many patients with prostate cancer receive definitive or adjuvant radiotherapy. This study aimed to identify the frequency of sleep disturbances and corresponding risk factors prior ...to radiation treatment. Patients and Methods: Data of 48 patients assigned to local or loco-regional irradiation for prostate cancer were retrospectively analyzed for pre-radiotherapy sleep disturbances. Fifteen characteristics were analyzed including age, performance status, comorbidity, history of previous malignancy, distress score, (emotional, physical or practical) problems, prostate-specific antigen, primary tumor stage, Gleason-score, upfront androgen deprivation therapy (ADT), treatment volume, brachytherapy, and COVID-19 pandemic. Results: Pre-radiotherapy sleep disturbances were reported by 20.8% of patients and significantly associated with distress scores ≥4 (p<0.0001) and ≥3 physical problems (p=0.0001). Trends were found for Karnofsky performance score ≤80 (p=0.095), Gleason score 7b-9 (p=0.079), and ADT (p=0.067). Conclusion: Pre-radiotherapy sleep disturbances were less common in prostate cancer patients than in other cancer patients. Risk factors were identified that can help identify patients requiring psychological support prior to radiotherapy.
Background/Aim: Organ-sparing treatment is increasingly used for bladder cancer, particularly for patients with significant comorbidities or advanced age. The upcoming treatment can cause distress ...and sleep disturbances. This study investigated pre-radiotherapy sleep disturbances in these patients. Patients and Methods: Twenty-two patients with bladder cancer scheduled for local or loco-regional radiotherapy were retrospectively evaluated. Sixteen characteristics were analyzed for sleep disturbances including age, sex, performance score, comorbidities, previous malignancy, distress score, emotional problems, physical problems, treatment situation, treatment intent, current primary tumor and nodal stage, distant metastasis, treatment volume, concurrent chemotherapy, and Coronavirus Disease 2019 pandemic. Results: Eleven patients (50.0%) reported sleep disturbances that were significantly associated with distress scores ≥5 (p=0.035). Trends were found for age ≤75 years (p=0.183), ≥2 emotional problems (p=0.183), ≥5 physical problems (p=0.064), and distant metastasis (p=0.090). Conclusion: Half of the patients reported pre-radiotherapy sleep disturbances. Risk factors facilitate identification of patients requiring psychological support.
Lung Cancer in the Elderly Gridelli, Cesare; Langer, Corey; Maione, Paolo ...
Journal of clinical oncology,
05/2007, Letnik:
25, Številka:
14
Journal Article
Recenzirano
Elderly patients often have comorbidities and other characteristics that make the selection of treatment daunting.
We have reviewed the available evidence in the literature to gauge the results of ...therapy for elderly lung cancer patients.
The beneficial results achieved with adjuvant chemotherapy in the general population with early non-small-cell lung cancer (NSCLC) cannot be automatically extrapolated to the elderly, who are at higher risk of toxicity. Retrospective analyses of combined chemoradiotherapy in locally advanced NSCLC patients suggest equivalent therapeutic benefit for younger and older patients, despite heightened toxicity. There have been no elderly-specific phase III trials for locally advanced NSCLC. For advanced NSCLC, on the basis of evidence-based data, single-agent chemotherapy remains the standard of care for nonselected elderly patients. However, retrospective analyses suggest that the efficacy of platinum-based combination chemotherapy is similar in fit older and younger patients, with increased but acceptable toxicity for elderly patients. In limited-disease small-cell lung cancer (SCLC), sequential chemoradiotherapy is clearly less toxic compared with a standard concurrent approach, but our assessment of treatment is hindered by the absence of prospective elderly-specific trials. Although prophylactic cranial irradiation has emerged as a standard strategy, it should be omitted in patients with cognitive impairment. In extensive SCLC, etoposide in combination with either cisplatin or carboplatin has emerged as standard treatment; hematopoietic support may be necessary.
With the exception of advanced NSCLC, prospective elderly-specific studies are lacking. Available data suggest that outcomes in the fit elderly mirror results observed in younger patients, although toxicity is generally worse.
Purpose
Intensity‐modulated proton therapy (IMPT) is known to be sensitive to patient setup and range uncertainty issues. Multiple robust optimization methods have been developed to mitigate the ...impact of these uncertainties. Here, we propose a new robust optimization method, which provides an alternative way of robust optimization in IMPT, and is clinically practical, which will enable users to control the balance between nominal plan quality and plan robustness in a user‐defined fashion.
Method
We calculated nine individual dose distributions which corresponded to one nominal and eight extreme scenarios caused by patient setup and proton beam's range uncertainties. For each voxel, the normalized dose interval (NDI) is defined as the full dose range variation divided by the maximum dose in all uncertainty scenarios (NDI = max – min dose/max dose), which was then used to calculate the normalized dose interval volume histogram (NDIVH) curves. The areas under the NDIVH curves were used to quantify plan robustness. A normalized dose interval volume constraint (NDIVC) applied to the target was incorporated to specify the desired robustness which was user‐defined. Users could then explore the trade‐off between nominal plan quality and plan robustness by adjusting the position of the NDIVCs on the NDIVH curves freely. We benchmarked our method using one lung, five head and neck (H&N), and three prostate cases by comparing our results to those derived using the voxel‐wise worst‐case robust optimization.
Results
Using the benchmark cases, our new method achieved quality IMPT plans comparable to those derived from the voxel‐wise worst‐case robust optimization for both nominal plan quality and plan robustness in general; even more conformal and more homogeneous target dose distributions in some cases, if proper NDIVCs were applied. The AUC under NDIVH, as a precise quantitative index of plan robustness, was consistent with DVH bandwidths. Additionally, we demonstrated the feasibility of adjusting the position of NDIVCs in the NDIVH curves which allowed users to explore the trade‐off between nominal plan quality and plan robustness.
Conclusions
The NDIVH‐based robust optimization method provided a novel and individualized way of robust optimization in IMPT, and enables users to adjust the balance between nominal plan quality and plan robustness in a user‐defined fashion. This method is applicable for continued improvement and developing the next generation of IMPT planning algorithms in the future.
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