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PURPOSE: In recent years, there has been a national decline in applicants to radiation oncology (RO) residencies, partly due to limited exposure to RO during medical school. Student Interest Groups (SIGs) give students early exposure to a variety of specialties. This study investigates the efficacy of a RO-SIG to increase knowledge and interest in the field. METHODOLOGY: First and second-year medical students attending an RO-SIG event or shadowing experience completed surveys both prior and following participation. Students ranked their interest in oncology, in RO, and their perceived accessibility of mentors in oncology. Questions were rated on a Likert scale from 0 to 5 (5 highest, 0 lowest). The survey included one short response question about the understanding of the role of the RO, which was evaluated qualitatively. RESULTS: 44 students (42 M1s, 2 M2s) completed the pre-survey and 18 (41%, 17 M1s, 1 M2) completed the post-survey. Of the 18 matched responses, interest in oncology increased from 3.67 pre-SIG to 3.89 (p = 0.19) and in RO specifically from 3.17 to 3.89 (p < 0.01). The mean perceived accessibility of faculty mentors in oncology increased from 3.18 to 3.72 (p < 0.01). After interacting with the RO-SIG, the short response answers were more detailed in the understanding of the role of RO. CONCLUSIONS: RO-SIGs can increase interest in RO through early exposure to the field. In a time where RO has seen a decline in student interest, RO-SIGs are an option to increase engagement, develop interest, and form relationships with mentors in pre-clinical years.
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PURPOSE: To investigate whether gynecologic and radiation oncologists document discussions of chemoradiation treatment's gonadotoxicity for patients with cervical cancer and what patient and physician factors make discussions more likely. METHODS AND MATERIALS: Women with LACC treated with definitive CRT between 2009 and 2022 were included. Visit notes with gynecologic and radiation oncologists were reviewed for sexual health discussions. Fertility and premature menopause discussions were only evaluated among premenopausal patients. Variables of interest including demographics and staging were collected. Univariate and multivariate analyses were conducted using Rv4.2.1. RESULTS: A total of 93 women were included (22-91 years old). Most were Stage IIB (32%) or IIIB (34%). Sexual health discussions occurred among 74.2% of patients and did not have a significant relationship with any patient factors. Fertility discussions occurred with 17.5% of the 57 premenopausal patients and were more likely among younger patients (≤31.9, pâ¯<â¯0.001) with fewer children (≤1, pâ¯<â¯0.001). Premature menopause discussions occurred among 73.7% of premenopausal patients and were more likely among younger patients (≤39.0, pâ¯=â¯0.015). CONCLUSIONS: It is promising to see that oncologists are discussing sexual health and premature menopause with most patients. The limited fertility discussions suggest that oncologists are less likely to discuss fertility as women approach the age of menopause or already have children. Involvement of reproductive endocrinologists and psychologists may provide patients with a more comprehensive understanding of long-term quality of life.
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Fertilidade , Menopausa Precoce , Saúde Sexual , Neoplasias do Colo do Útero , Humanos , Feminino , Neoplasias do Colo do Útero/radioterapia , Neoplasias do Colo do Útero/terapia , Adulto , Pessoa de Meia-Idade , Idoso , Idoso de 80 Anos ou mais , Fertilidade/efeitos da radiação , Relações Médico-Paciente , Quimiorradioterapia , Adulto Jovem , Estadiamento de Neoplasias , Estudos RetrospectivosRESUMO
PURPOSE: This study presents a novel and comprehensive framework for evaluating magnetic resonance guided radiotherapy (MRgRT) workflow by integrating the Failure Modes and Effects Analysis (FMEA) approach with Time-Driven Activity-Based Costing (TDABC). We assess the workflow for safety, quality, and economic implications, providing a holistic understanding of the MRgRT implementation. The aim is to offer valuable insights to healthcare practitioners and administrators, facilitating informed decision-making regarding the 0.35T MRIdian MR-Linac system's clinical workflow. METHODS: For FMEA, a multidisciplinary team followed the TG-100 methodology to assess the MRgRT workflow's potential failure modes. Following the mitigation of primary failure modes and workflow optimization, a treatment process was established for TDABC analysis. The TDABC was applied to both MRgRT and computed tomography guided RT (CTgRT) for typical five-fraction stereotactic body RT (SBRT) treatments, assessing total workflow and costs associated between the two treatment workflows. RESULTS: A total of 279 failure modes were identified, with 31 categorized as high-risk, 55 as medium-risk, and the rest as low-risk. The top 20% risk priority numbers (RPN) were determined for each radiation oncology care team member. Total MRgRT and CTgRT costs were assessed. Implementing technological advancements, such as real-time multi leaf collimator (MLC) tracking with volumetric modulated arc therapy (VMAT), auto-segmentation, and increasing the Linac dose rate, led to significant cost savings for MRgRT. CONCLUSION: In this study, we integrated FMEA with TDABC to comprehensively evaluate the workflow and the associated costs of MRgRT compared to conventional CTgRT for five-fraction SBRT treatments. FMEA analysis identified critical failure modes, offering insights to enhance patient safety. TDABC analysis revealed that while MRgRT provides unique advantages, it may involve higher costs. Our findings underscore the importance of exploring cost-effective strategies and key technological advancements to ensure the widespread adoption and financial sustainability of MRgRT in clinical practice.
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Imageamento por Ressonância Magnética , Aceleradores de Partículas , Radiocirurgia , Dosagem Radioterapêutica , Planejamento da Radioterapia Assistida por Computador , Radioterapia Guiada por Imagem , Radioterapia de Intensidade Modulada , Fluxo de Trabalho , Humanos , Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia de Intensidade Modulada/métodos , Radioterapia Guiada por Imagem/métodos , Radiocirurgia/métodos , Aceleradores de Partículas/instrumentação , Imageamento por Ressonância Magnética/métodos , Neoplasias/radioterapia , Tomografia Computadorizada por Raios X/métodos , Análise do Modo e do Efeito de Falhas na Assistência à Saúde , Órgãos em Risco/efeitos da radiaçãoRESUMO
PURPOSE: Surgical resection remains the only curative therapy for pancreatic cancer. Unfortunately, many patients have borderline or unresectable disease at diagnosis due to proximity of major abdominal vessels. Neoadjuvant chemotherapy and radiation are used to down-stage, however, there is a risk that there will be a positive/close surgical margin. The CivaSheet is a low-dose-rate (LDR) brachytherapy device placed at the time of surgery to target the area of highest risk of margin positivity. The purpose of this study is to assess the clinical value of brachytherapy in addition to standard-of-care therapy in pancreatic therapy. METHODS AND MATERIALS: Between 2017 and 2022 patients with borderline and locally advanced pancreatic cancer treated with neoadjuvant chemotherapy and radiation followed by surgical resection were included. There were 2 cohorts of patients: (1) Those who had the LDR brachytherapy device placed at the time of surgery and (2) those who did not. Sixteen of 19 (84%) patients who had brachytherapy were enrolled in a prospective clinical trial (NCT02843945). Patients were matched for comorbidities, cancer staging, and treatment details. The primary outcome was progression-free survival (PFS). RESULTS: Thirty-five patients were included in this analysis, 19 in the LDR brachytherapy group and 16 in the comparison cohort. The 2-year PFS was 21% vs. 0% (pâ¯=â¯0.11), 2-year OS was 26% vs. 13% (pâ¯=â¯0.43), and the pancreatic cancer cause-specific survival was 84% vs. 56% (pâ¯=â¯0.13) in favor of the brachytherapy patients. CONCLUSIONS: Use of LDR brachytherapy at the time of resection shows a trend towards improved progression free and overall survival for patients with borderline or locally advanced pancreatic cancer treated with neoadjuvant chemoradiation.
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Braquiterapia , Neoplasias Pancreáticas , Humanos , Neoplasias Pancreáticas/radioterapia , Neoplasias Pancreáticas/patologia , Masculino , Feminino , Pessoa de Meia-Idade , Idoso , Terapia Neoadjuvante , Estudos Prospectivos , Dosagem Radioterapêutica , Padrão de Cuidado , Resultado do Tratamento , Intervalo Livre de Progressão , Estadiamento de Neoplasias , Idoso de 80 Anos ou maisRESUMO
PURPOSE: The aim of this work was to report the effect of mismatch repair (MMR) status on outcomes of patients with stage I-II endometrioid endometrial adenocarcinoma (EEC) who receive adjuvant radiation therapy. METHODS AND MATERIALS: This is a multi-institutional retrospective cohort study across 11 institutions in North America. Patients with known MMR status and stage I-II EEC status postsurgical staging were included. Overall survival (OS) and recurrence-free survival (RFS) rates were estimated via the Kaplan-Meier method. Univariable and multivariable analyses were performed via Cox proportional hazard models for RFS and OS. Statistical analyses were conducted using SPSS version 27. RESULTS: In total, 744 patients with a median age at diagnosis of 65 years (IQR, 58-71) were included. Most patients were White (69.4%) and had Federation of Obstetrics and Gynecology 2009 stage I (84%) and Federation of Obstetrics and Gynecology grade 1 to 2 (73%). MMR deficiency was reported in 234 patients (31.5%), whereas 510 patients (68.5%) had preserved MMR. External beam radiation therapy with or without vaginal brachytherapy was delivered to 186 patients (25%), whereas 558 patients (75%) received vaginal brachytherapy alone. At a median follow-up of 43.5 months, the estimated crude OS and RFS rates for the entire cohort were 92.5% and 84%, respectively. MMR status was significantly correlated with RFS. RFS was inferior for MMR deficiency compared with preserved MMR (74.3% vs 88.6%, P < .001). However, no difference in OS was seen (90.8% vs 93.2%, P = .5). On multivariable analysis, MMR deficiency status was associated with worse RFS (hazard ratio, 1.86; P = .001) but not OS. CONCLUSIONS: MMR status was independently associated with RFS but not OS in patients with early-stage EEC who were treated with adjuvant radiation therapy. These findings suggest that differential approaches to surveillance and/or treatment based on MMR status could be warranted.
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Reparo de Erro de Pareamento de DNA , Neoplasias do Endométrio , Estadiamento de Neoplasias , Humanos , Feminino , Neoplasias do Endométrio/radioterapia , Neoplasias do Endométrio/mortalidade , Neoplasias do Endométrio/patologia , Neoplasias do Endométrio/genética , Pessoa de Meia-Idade , Idoso , Radioterapia Adjuvante , Estudos Retrospectivos , Prognóstico , Intervalo Livre de Doença , Estimativa de Kaplan-Meier , Modelos de Riscos Proporcionais , Carcinoma Endometrioide/radioterapia , Carcinoma Endometrioide/patologia , Carcinoma Endometrioide/mortalidade , Carcinoma Endometrioide/genética , BraquiterapiaRESUMO
PURPOSE: We aimed to assess the clinical feasibility and advantages of using a novel hybrid brachytherapy technique by placing Freehand Interstitial Needles in addition to the Tandem and Ovoid applicator (FINITO) for the treatment of locally advanced cervical cancer (LAC). METHODS AND MATERIALS: A retrospective analysis was performed on two cohorts of patients with LACC treated at our institution: 29 patients in the FINITO group and 17 patients in the control group using T&O only approach. Clinical outcomes of interest included local control (LC), progression-free survival (PFS), overall survival (OS), and rates of acute and late toxicities. Kaplan-Meier methodology was used to estimate OS, PFS, and LC. Wilcoxon signed-rank test was used to compare the median values for dosimetry parameters. A p-value of ≤ 0.05 was considered statistically significant. All statistical analyses were performed using RStudio. RESULTS: At a median of 2 years there was no difference in rates of OS, PFS or LC between the FINITO and the control group of patients. The 2-year OS, PFS, and LC for the FINITO group were 59% (95% CI 34%-100%), 58% (95% CI 38%-89%), and 84% (95% CI 69%-100%), respectively. Late toxicities were significantly lower in the FINITO group for both gastrointestinal and genitourinary symptoms (pâ¯=â¯0.001 and 0.01, respectively) as compared to the T&O group. CONCLUSION: Based on the equivalent LC rate and lower toxicity profile, our FINITO technique appears to be an excellent alternative to the standard intracavitary brachytherapy in patients with advanced disease, especially in resource-limited settings.
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Braquiterapia , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/radioterapia , Neoplasias do Colo do Útero/tratamento farmacológico , Dosagem Radioterapêutica , Braquiterapia/métodos , Estudos Retrospectivos , Intervalo Livre de ProgressãoRESUMO
Introduction: Poly(ADP-ribose) polymerase (PARP) is a nuclear enzyme involved in the repair of DNA single-strand breaks (SSB). The recent development of poly(ADP-ribose) polymerase inhibitors (PARPi) results from over 45 years of studies. When the activity of PARP1 or PARP2 is compromised, DNA SSB lesions are unresolved and can be converted to DNA double-strand breaks (DSBs) by the cellular transcription mechanisms. ARID1A (also called BAF250a) is an important component of the mammalian Switch/Sucrose Non-Fermentable (SWI/SNF) chromatin-remodeling complex. ARID1A gene demonstrates >50% of mutation rate in ovarian clear-cell carcinomas (OCCC). Mutated or downregulated ARID1A significantly compromises the Homologous Recombination Repair (HRR) of DNA DSB. Results: The present study demonstrated that downregulated or mutated ARID1A attenuates DNA HRR through stimulation of the PI3K/Akt1 pathway and makes tumor cells highly sensitive to PARPi and PARPi/ionizing radiation (IR) combination. We showed that PI3K/Akt1 pathway plays an important role in the sensitization of cancer cell lines with compromised function of ARID1A to PARPi treatment. Discussion: We believe that using of PARPi monotherapy or in combination with radiation therapy is an appealing strategy for treating ARID1A-mutated cancers, as well as many other types of PI3K/Akt1-driven cancers.
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Over the past decade, concerns have arisen in radiation oncology regarding potential workforce supply and demand imbalance. The American Society for Radiation Oncology commissioned an independent analysis in 2022, looking at supply and demand in the United States radiation oncology workforce and projecting future trends for 2025 and 2030. The final report, titled Projected Supply and Demand for Radiation Oncologists in the U.S. in 2025 and 2030, is now available. The analysis included evaluating radiation oncologist (RO) supply (new graduates, exits from the specialty), potential changes in demand (growth of Medicare beneficiaries, hypofractionation, loss of indications, new indications) as well as RO productivity (growth of work relative value units [wRVUs] produced), and demand per beneficiary. The results demonstrated a relative balance between radiation oncology supply and demand for radiation services; the growth in ROs was balanced by the rapid growth of Medicare beneficiaries over the same period. The primary factors driving the model were found to be growth of Medicare beneficiaries and change in wRVU productivity, with hypofractionation and loss of indication having only a moderate effect; although the most likely scenario was a balance of workforce supply and demand, scenarios did demonstrate the possibility of over- and undersupply. Oversupply may become a concern if RO wRVU productivity reaches the highest region; beyond 2030, this is also possible if growth in RO supply does not parallel Medicare beneficiary growth, which is projected to decline and will require corresponding supply adjustment. Limitations of the analysis included uncertainty regarding the true number of ROs, the lack of inclusion of most technical reimbursement and its effect as well as failing to account for stereotactic body radiation therapy. A modeling tool is available to allow individuals to evaluate different scenarios. Moving forward, continued study will be needed to evaluate trends (particularly wRVU productivity and Medicare beneficiary growth) to allow for continued assessment of workforce supply and demand in radiation oncology.
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Radioterapia (Especialidade) , Humanos , Idoso , Estados Unidos , Espécies Reativas de Oxigênio , Medicare , Recursos Humanos , Sociedades MédicasRESUMO
PURPOSE: Endometrial Cancer (EC) is the most common gynecologic malignancy in the United States. Standard treatment is TAH/BSO with radiation therapy (RT) and chemotherapy given based on risk. Treatment can cause significant vaginal changes, including shortening, narrowing, loss of elasticity, atrophy, and dryness. These are not life threatening, but affect a woman's physical, psychological, and social functioning. Adjuvant vaginal dilator use is often advised, but there are inconsistent recommendations on use. This prospective study compared vaginal length changes and sexual function in women compliant with dilation versus not after surgery and RT. METHODS AND MATERIALS: Enrolled patients underwent surgery for Stage I-IIIC EC ±RT. Vaginal dilator use was recommended for women receiving RT (external beam or brachytherapy). Vaginal length was measured with a vaginal sound and the Female Sexual Function Index (FSFI) was used to assess sexual function. RESULTS: Forty-one enrolled patients had sufficient data for analysis. Dilation significantly increased FSFI scores (pâ¯=â¯0.02) while RT without dilation showed a significant decrease (pâ¯=â¯0.04). Dilation helped maintain vaginal length for all patients (0 cm vs. 1.8 cm loss (pâ¯=â¯0.03)). Individual arms did not show statistically significant changes in length with dilation, though the trend showed RT without dilation had an average loss of 2.3 cm as compared to only 0.2 cm for regular dilation. Notably, there was no difference in length change with dilation for surgery alone versus surgery and RT (pâ¯=â¯0.14). CONCLUSION: This data provides novel, prospective evidence of the benefit of vaginal dilation for maintaining vaginal length and improving sexual health after any pelvic treatment for EC. This evidence also supports that the addition of RT after surgery does not appear to significantly worsen vaginal shortening. This study has important implications for providing a strong foundation for future studies and helping to establish solid clinical management criteria for the prevention of vaginal stenosis and promotion of female sexual health.
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Braquiterapia , Neoplasias do Endométrio , Feminino , Humanos , Vagina/patologia , Braquiterapia/métodos , Estudos Prospectivos , Constrição Patológica/etiologia , Constrição Patológica/patologia , Neoplasias do Endométrio/radioterapia , Neoplasias do Endométrio/cirurgia , Neoplasias do Endométrio/patologiaRESUMO
OBJECTIVE: To report the impact of race on clinical outcomes in patients with stage IIIC endometrial carcinoma. MATERIALS AND METHODS: A retrospective multi-institutional study included 90 black and 568 non-black patients with stage IIIC endometrial carcinoma who received adjuvant chemotherapy and radiation treatments. Overall survival (OS) and recurrence-free survival (RFS) were calculated by the Kaplan-Meier method. Propensity score matching (PSM) was conducted. Statistical analyses were conducted using SPSS version 27. RESULTS: The Median follow-up was 45.3 months. black patients were significantly older, had more nonendometrioid histology, grade 3 tumors, and were more likely to have >1 positive paraaortic lymph nodes compared with non-black patients (all P <0.0001). The 5-year estimated OS and RFS rates were 45% and 47% compared with 77% and 68% for black patients versus non-black patients, respectively ( P <0.001). After PSM, the 2 groups were well-balanced for all prognostic covariates. The estimated hazard ratios of black versus non-black patients were 1.613 ( P value=0.045) for OS and 1.487 ( P value=0.116) for RFS. After PSM, black patients were more likely to receive the "Sandwich" approach and concurrent chemoradiotherapy compared with non-black ( P =0.013) patients. CONCLUSIONS: Black patients have higher rates of nonendometrioid histology, grade 3 tumors, and number of involved paraaortic lymph nodes, worse OS, and RFS, and were more likely to receive the "Sandwich" approach compared with non-black patients. After PSM, black patients had worse OS with a nonsignificant trend in RFS. Access to care, equitable inclusion on randomized trials, and identification of genomic differences are warranted to help mitigate disparities.
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Neoplasias do Endométrio , Feminino , Humanos , Quimioterapia Adjuvante , Neoplasias do Endométrio/patologia , Linfonodos/patologia , Estadiamento de Neoplasias , Estudos RetrospectivosRESUMO
The COVID-19 pandemic catalyzed the integration of a virtual education curriculum to support radiation oncologists in training. We report outcomes from Radiation Oncology Virtual Education Rotation (ROVER) 2.0, a supplementary virtual educational curriculum created for radiation oncology residents globally. A prospective cohort of residents completed surveys before and after the live virtual webinar sessions (pre- and post-surveys, respectively). Live sessions were structured as complex gray-zone cases across various core disease sites. Resident demographics and responses were summarized using means, standard deviations, and proportions. Nine ROVER sessions were held from October 2020 to June 2021. A total of 1487 registered residents completed the pre-survey, of which 786 attended the live case discussion and 223 completed post-surveys. A total of 479 unique radiation oncology residents (of which 95, n = 19.8%, were international attendees) from 147 institutions (national, n = 81, 55.1%; international, n = 66, 44.9%) participated in the sessions. There was similar participation across post-graduate year (PGY) 2 through 5 (range n = 86 to n = 105). Of the 122 unique resident post-surveys, nearly all reported learning through the virtual structure as "very easy" or "easy" (97.5%, n = 119). A majority rated the ROVER 2.0 educational sessions to be "valuable or "very valuable" (99.2%, n = 121), and the panelists-attendee interaction as "appropriate" (97.5%, n = 119). Virtual live didactics aimed at radiation oncology residents are feasible. These results suggest that the adoption of the ROVER 2.0 curricula may help improve radiation oncology resident education.
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COVID-19 , Internato e Residência , Radioterapia (Especialidade) , Humanos , Currículo , Pandemias , Estudos Prospectivos , Radioterapia (Especialidade)/educação , Inquéritos e QuestionáriosRESUMO
PURPOSE: Cancer treatment nonadherence is associated with higher rates of cancer recurrence and decreased survival. Rural patients with cancer experience a 10% higher mortality rate compared with their nonrural counterparts; geographic differences in nonadherence may contribute to this increased mortality. The goal of this study was to assess for geographic disparities and determine sociodemographic and clinical factors associated with radiation therapy (RT) nonadherence and survival among rural and nonrural patients with cancer. METHODS AND MATERIALS: We examined cancer registry, medical records, and billing claims data at a safety net academic medical center. Geographic residence was defined as rural versus nonrural by US Department of Agriculture 2013 Rural-Urban Continuum Codes. Other factors assessed were age, sex, race, marital status, insurance type, employment, area median household income, residential distance to cancer treatment center, clinical stage, cancer type, treatment modality, total radiation dose received, and radiation dose per fraction. We used Cox proportional hazards modeling to examine 7 ways of operationalizing nonadherence and selected the definition that resulted in the best model fit statistics and prediction of mortality. Overall survival rates were estimated with the Kaplan-Meier method. We then examined nonadherence as the main exposure along with additional covariates in least absolute shrinkage and selection operator penalized survival analyses and as the outcome in our multivariable generalized linear regression analyses predicting nonadherence. We considered 2-way interaction terms with the main exposure, geographic residence. RESULTS: We identified 3,077 patients with cancer who averaged 62 years old, were 59% female, 34% Black, and 14% rural. Twenty-two percent of patients missed at least 2 fractions and missed an average of 10% of their treatment plan. Rural patients experienced a higher mortality rate than nonrural patients (53% vs 42%, P < .0001). Survival was assessed through December 31, 2021, with a mean follow-up of 4.5 years. Proportion of missed fractions as the indicator of nonadherence provided the best model fit statistics and prediction of survival. Marital status, employment status, tumor, nodes, metastases stage, cancer type, and age at diagnosis significantly affected survival, in addition to a treatment delay by geographic residence interaction effect. Specifically, patients residing in rural areas who experienced a treatment delay were more than twice as likely to die as nonrural residents who also experienced a treatment delay, and nearly twice as likely to die as rural residents who did not experience a treatment delay. The 2-year survival rate was 76% for nonrural residents who did not experience a treatment delay versus 27% for rural residents who experienced a treatment delay. Patients who were widowed, had stage 4 cancer, or lung cancer were more likely to be nonadherent. Finally, patients residing in rural areas who experienced a treatment delay were more likely to subsequently be nonadherent. CONCLUSIONS: In a geographically and racially diverse population, RT nonadherence is a significant concern that affects survival, yet it is a modifiable risk factor. We demonstrated that rural residence was associated with both RT nonadherence and poorer overall survival. Rural patients with a treatment delay had the lowest overall survival, compared with both nonrural survivors and rural survivors without delay. Rural residents who are delayed in starting treatment are at heightened risk for poor outcomes and should receive targeted support to mitigate the observed disparities. Additional patient populations that may benefit from targeted treatment adherence support include widowed patients and those with stage 4 cancer or lung cancer.