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BACKGROUND: Locally advanced rectal cancer can cause severe symptomatic pelvic morbidity such as pain, haemorrhage or bowel obstruction for frail or metastatic patients, which are often unfit to undergo surgery or intense systemic treatment. The most frequent radiation schedule is 25 Gy/ 5f but the optimal dose is yet to determine. Our aim was to conduct a systematic review on the efficacy and toxicity of the published radiation schedules of palliative rectal cancer. METHODS: Systematic literature of the Medline, Embase and Cochrane library databases were performed throughout the year 2023. Published articles on palliative external beam radiation therapy (EBRT) for locally advanced or metastatic rectal cancer reporting on symptom palliation, overall survival (OS) and quality of life (QOL) were eligible for inclusion. RESULTS: Thirteen studies were included, five of them were prospective studies. There were large variations in radiation schedules, associated chemotherapy and palliative care. Pooled overall symptomatic response rate was 71 %, while response rates were respectively 90 %, 85 %, and 84 % for pain, bleeding, and pelvic symptoms. Acute toxicities were mostly mild genitourinary or gastrointestinal. CONCLUSIONS: Short course palliative radiation for LARC for frail or metastatic patients is efficient for symptom palliation with few adverse effects. A short course EBRT with an integrated IMRT boost on the tumoral volume could be of interest.
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Intrahepatic cholangiocarcinoma (iCCA) is the second most common malignant primary liver cancer. iCCA may develop on an underlying chronic liver disease and its incidence is growing in relation with the epidemics of obesity and metabolic diseases. In contrast, perihilar cholangiocarcinoma (pCCA) may follow a history of chronic inflammatory diseases of the biliary tract. The initial management of CCAs is often complex and requires multidisciplinary expertise. The French Association for the Study of the Liver wished to organize guidelines in order to summarize the best evidence available about several key points in iCCA and pCCA. These guidelines have been elaborated based on the level of evidence available in the literature and each recommendation has been analysed, discussed and voted by the panel of experts. They describe the epidemiology of CCA as well as how patients with iCCA or pCCA should be managed from diagnosis to treatment. The most recent developments of personalized medicine and use of targeted therapies are also highlighted.
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PURPOSE: The influence of human immunodeficiency virus (HIV) infection on clinical outcomes in patients receiving (chemo)radiation therapy (RT) for squamous cell carcinoma of the anus (SCCA) is debated. The objective of this study was to compare efficacy and safety according to HIV status in patients with SCCA treated with C/RT. METHODS AND MATERIALS: Between January 2015 and April 2020, 488 patients with a known HIV status (17.6% HIV+) were treated with radiation therapy for SCCA and included in the FFCD-ANABASE multicentric prospective cohort. Clinical outcomes including overall survival (OS), locoregional recurrence-free survival, colostomy-free survival, response rate at 4 to 6 months, cancer-specific survival, relapse-free survival, and severe acute and late toxicity were compared between HIV+ and HIV- patients. RESULTS: The median follow-up was 35.8 months. HIV+ patients were younger (P < .01) and predominantly male (P < .01). Intensity modulated radiation therapy was performed in 80.7% of patients, and 80.9% received concurrent chemotherapy. A higher proportion of HIV+ patients received induction chemotherapy compared with HIV- patients. No statistically significant difference in overall treatment time or severe acute and late toxicities was found between HIV+ and HIV- patients. In univariate analyses, OS (HR = 2.1 [CI 95% 1.2;3.5], P = .007), locoregional recurrence-free survival (HR = 1.7 [1.1;2.7], P = .02), and colostomy-free survival (HR = 1.7 [1.1;2.6], P = .01) were significantly shorter in HIV+ patients than in HIV- patients. Response rate, cancer-specific survival, and relapse-free survival were not significantly different. The recurrence site was significantly different according to HIV status. In the multivariate analysis, prognostic factors for OS were a World Health Organization performance status of ≥1 for the whole population, as well as HIV+ status for the subgroup of women. CONCLUSIONS: HIV+ patients treated with chemo-RT for SCCA have poorer clinical outcomes, especially women. No difference was found in toxicity according to HIV status with intensity modulated radiation therapy technique.
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This study aimed to evaluate the prognostic value of 18F-FDG PET/CT qualitative assessment in terms of recurrence-free survival (RFS), colostomy-free survival (CFS), and overall survival (OS) after radiation therapy (RT) of squamous cell carcinoma of the anus (SCCA). Secondary objectives were to evaluate the prognostic value of baseline and posttherapeutic quantitative 18F-FDG PET/CT parameters in terms of RFS, CFS, and OS. Methods: We included all consecutive patients from the French multicentric cohort FFCD-ANABASE who had undergone 18F-FDG PET/CT at baseline and 4-6 mo after RT or chemoradiotherapy for a localized SCCA. Qualitative assessments separated patients with complete metabolic response (CMR) and non-CMR. Quantitative parameters were measured on baseline and posttreatment 18F-FDG PET/CT. RFS, CFS, and OS were analyzed using the Kaplan-Meier method. Associations among qualitative assessments, quantitative parameters, and RFS, CFS, and OS were analyzed using univariate and multivariate Cox regression. Results: Among 1,015 patients treated between January 2015 and April 2020, 388 patients (300 women and 88 men) from 36 centers had undergone 18F-FDG PET/CT at diagnosis and after treatment. The median age was 65 y (range, 32-90 y); 147 patients (37.9%) had an early-stage tumor and 241 patients (62.1%) had a locally advanced-stage tumor; 59 patients (15.2%) received RT, and 329 (84.8%) received chemoradiotherapy. The median follow-up was 35.5 mo (95% CI, 32.8-36.6 mo). Patients with CMR had better 3-y RFS, CFS, and OS, at 84.2% (95% CI, 77.8%-88.9%), 84.7% (95% CI, 77.2%-89.3%), and 88.6% (95% CI, 82.5%-92.7%), respectively, than did non-CMR patients, at 42.1% (95% CI, 33.4%-50.6%), 47.9% (95% CI, 38.1%-56.8%), and 63.5 (95% CI, 53.2%-72.1%), respectively (P < 0.0001). Quantitative parameters were available for 154 patients from 3 centers. The following parameters were statistically significantly associated with 3-y RFS: baseline SUVmax (primitive tumor [T]) (hazard ratio [HR], 1.05 [95% CI, 1.01-1.1; P = 0.018]), SUVpeak (T) (HR, 1.09 [95% CI, 1.02-1.15; P = 0.007]), MTV 41% (T) (HR, 1.02 [95% CI, 1-1.03; P = 0.023]), MTV 41% (lymph node [N]) (HR, 1.06 [95% CI, 1.03-1.1; P < 0.001]), MTV 41% (T + N) (HR, 1.02 [95% CI, 1-1.03; P = 0.005]), and posttreatment SUVmax (HR, 1.21 [95% CI, 1.09-1.34; P < 0.001]). Conclusion: Treatment response assessed by 18F-FDG PET/CT after RT for SCCA has a significant prognostic value.18F-FDG PET/CT could be useful for adapting follow-up, especially for patients with locally advanced-stage tumors. Quantitative parameters could permit identification of patients with a worse prognosis but should be evaluated in further trials.
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Neoplasias do Ânus , Carcinoma de Células Escamosas , Fluordesoxiglucose F18 , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Humanos , Masculino , Feminino , Neoplasias do Ânus/diagnóstico por imagem , Neoplasias do Ânus/terapia , Idoso , Pessoa de Meia-Idade , Prognóstico , Carcinoma de Células Escamosas/diagnóstico por imagem , Carcinoma de Células Escamosas/radioterapia , Carcinoma de Células Escamosas/terapia , Estudos de Coortes , Idoso de 80 Anos ou mais , AdultoRESUMO
BACKGROUND: Management of ampullary tumors (AT) is challenging because of a low level of scientific evidence. This document is a summary of the French intergroup guidelines regarding the management of AT, either adenoma (AA) or carcinoma (AC), published in July 2023, available on the website of the French Society of Gastroenterology (SNFGE) (www.tncd.org). METHODS: A collaborative work was conducted under the auspices of French medical, endoscopic, oncological and surgical societies involved in the management of AT. Recommendations are based on recent literature review and expert opinions and graded in three categories (A, B, C), according to quality of evidence. RESULTS: Accurate diagnosis of AT requires at least duodenoscopy and EUS. All patients should be discussed in multidisciplinary tumor board before treatment. Surveillance may only be proposed for small AA in familial adenomatous polyposis. For AA, endoscopic papillectomy is the preferred option only if R0 resection can be achieved. When not possible, surgical papillectomy should be considered. For AC beyond pT1a N0, pancreaticoduodenectomy is the procedure of choice. Adjuvant monochemotherapy (gemcitabine, 5FU) may be proposed. For aggressive tumors (pT3/T4, pN+, R1, poorly differentiated AC, pancreatobiliary differentiation) with high risk of recurrence, 6 months polychemotherapy (CAPOX/FOLFOX for the intestinal subtype and mFOLFIRINOX for the pancreatobiliary or the mixed subtype) may be a valid alternative. Clinical and radiological follow up is recommended for 5 years. CONCLUSIONS: These guidelines help to homogenize and highlight unmet needs in the management of AA and AC. Each individual case should be discussed by a multidisciplinary team.
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A major advance has been made in the management of rectal cancer, with the emergence in 2021 of total neoadjuvant treatment. The main publications from the RAPIDO and PRODIGE-23 trials reported a significant improvement in progression-free survival and the pathological complete response rate. The aim of this review is to synthesize recent data on neoadjuvant treatment of rectal cancer, to explain the long-term results of the RAPIDO and PRODIGE-23 trials, and to put them into perspective, considering current advances in de-escalation strategies. The update of the 5-year survival data from the RAPIDO trial highlights an increased risk of loco-regional relapse, with 11.7% of relapses in the experimental group and 8.1% in the control group, while the update of the PRODIGE-23 trial confirms the benefits of this treatment regimen, with a significant improvement in overall survival. In addition, the results of the OPRA and PROPSPECT trials confirm the benefit of total neoadjuvant treatment with induction chemotherapy, as well as the possibility of surgical de-escalation in the OPRA trial and radiotherapy in the PROSPECT trial. The challenge for the future is to identify patients who require total neoadjuvant treatment with the aim of curative surgery to obtain a cure without local or distant relapse, and those for whom therapeutic de-escalation can be envisaged.
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Adenocarcinoma , Terapia Neoadjuvante , Recidiva Local de Neoplasia , Neoplasias Retais , Humanos , Neoplasias Retais/terapia , Neoplasias Retais/patologia , Neoplasias Retais/mortalidade , Adenocarcinoma/terapia , Adenocarcinoma/patologia , Adenocarcinoma/mortalidade , Recidiva Local de Neoplasia/terapia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimioterapia de Indução , Intervalo Livre de Progressão , Fluoruracila/administração & dosagem , Fluoruracila/uso terapêutico , Capecitabina/administração & dosagem , Ensaios Clínicos Controlados Aleatórios como Assunto , Leucovorina/administração & dosagem , Leucovorina/uso terapêutico , Compostos Organoplatínicos/administração & dosagem , Compostos Organoplatínicos/uso terapêuticoRESUMO
OBJECTIVES: The management of upper aerodigestive tract cancers is a complex specialty. It is essential to provide an update to establish optimal care. At the initiative of the INCa and under the auspices of the SFORL, the scientific committee, led by Professor Béatrix Barry, Dr. Gilles Dolivet, and Dr. Dominique De Raucourt, decided to develop a reference framework aimed at defining, in a scientific and consensus-based manner, the general principles of treatment for upper aerodigestive tract cancers applicable to all sub-locations. METHODOLOGY: To develop this framework, a multidisciplinary team of practitioners was formed. A systematic analysis of the literature was conducted to produce recommendations classified by grades, in accordance with the standards of the French National Authority for Health (HAS). RESULTS: The grading of recommendations according to HAS standards has allowed the establishment of a reference for patient care based on several criteria. In this framework, patients benefit from differentiated care based on prognostic factors they present (age, comorbidities, TNM status, HPV status, etc.), conditions of implementation, and quality criteria for indicated surgery (operability, resectability, margin quality, mutilation, salvage surgery), as well as quality criteria for radiotherapy (target volume, implementation time, etc.). The role of medical and postoperative treatments was also evaluated based on specific criteria. Finally, supportive care must be organized from the beginning and throughout the patients' care journey. CONCLUSION: All collected data have led to the development of a comprehensive framework aimed at harmonizing practices nationally, facilitating decision-making in multidisciplinary consultation meetings, promoting equality in practices, and providing a state-of-the-art and reference practices for assessing the quality of care. This new framework is intended to be updated every 5 years to best reflect the latest advances in the field.
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Carcinoma de Células Escamosas , Humanos , Carcinoma de Células Escamosas/terapia , Trato GastrointestinalRESUMO
The National College of Cancerology Teachers (CNEC) was created in September 1986. Its missions are to develop the teaching of oncology, to promote educational actions in the discipline, to participate in the development of teaching content and the definition of curricula and the control of knowledge for the training of medical students and specialists, to develop and validate educational documents relating to the above teaching, to ensure the representation of oncology teaching to of the National University Council (CNU) and administrative authorities, to ensure and coordinate relations with other university disciplines, scientific societies, national, European, and international professional groups, and to contribute to the development of research in the discipline. The current office was elected in September 2022 for three years.
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Pessoal de Educação , Estudantes de Medicina , Humanos , Universidades , CurrículoRESUMO
CONTEXT: The reform of the third cycle of medical studies in France has introduced of the "Junior Doctor" status during the concluding year of residency. We wish to evaluate its implementation for the first promotion of medical oncology residents during 2021-2022 in correlation with the published guidelines. METHOD: AERIO conducted a cross-sectional study among French medical oncology residents. The survey was released via social networks and emails. RESULTS: Twenty-eight of 47 residents responded. The typical week involved one to two half-days of consultation, one dedicated to clinical research, one multidisciplinary team meetings, with the rest of time being occupied by day care (mostly) and hospitalization. Teaching and quality management activities were infrequent (monthly or less). The Junior Doctors rated their overall satisfaction at 8/10. A large majority (92.5 %) felt equipped to handle most of the situations they encountered. Almost all residents (92.9 %) had negotiated with their placement supervisor prior to the selection procedure. In one third of the cases (35.7 %), the principle of mismatch between the number of residents and the number of training sites was not respected. Only 42.9 % received training in scientific writing and 82.2 % of the residents agreed on the relevance of the post-internship training modules developed in other specialties. CONCLUSIONS: Junior doctors in medical oncology express overall satisfaction with this reform, which aligns with the recommendations. Nevertheless, certain concerns, such as selection procedure and inadequacy, along with areas requiring improvement, such as post-internship training and scientific writing, are clearly established.
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Internato e Residência , Oncologistas , Humanos , Estudos Transversais , Inquéritos e Questionários , Corpo Clínico HospitalarRESUMO
BACKGROUND: In case of locally advanced and/or non-metastatic unresectable esophageal cancer, definitive chemoradiotherapy (CRT) delivering 50 Gy in 25 daily fractions in combination with platinum-based regimen remains the standard of care resulting in a 2-year disease-free survival of 25% which deserves to be associated with new systemic strategies. In recent years, several immune checkpoint inhibitors (anti-PD1/anti-PD-L1, anti-Program-Death 1/anti-Program-Death ligand 1) have been approved for the treatment of various solid malignancies including metastatic esophageal cancer. As such, we hypothesized that the addition of an anti-PD-L1 to CRT would provide clinical benefit for patients with locally advanced oesophageal cancer. To assess the efficacy of the anti-PD-L1 durvalumab in combination with CRT and then as maintenance therapy we designed the randomized phase II ARION (Association of Radiochemotherapy with Immunotherapy in unresectable Oesophageal carciNoma- UCGI 33/PRODIGE 67). METHODS: ARION is a multicenter, open-label, randomized, comparative phase II trial. Patients are randomly assigned in a 1:1 ratio in each arm with a stratification according to tumor stage, histology and centre. Experimental arm relies on CRT with 50 Gy in 25 daily fractions in combination with FOLFOX regimen administrated during and after radiotherapy every two weeks for a total of 6 cycles and durvalumab starting with CRT for a total of 12 infusions. Standard arm is CRT alone. Use of Intensity Modulated radiotherapy is mandatory. The primary endpoint is to increase progression-free survival at 12 months from 50 to 68% (HR = 0.55) (power 90%; one-sided alpha-risk, 10%). Progression will be defined with central external review of imaging. ANCILLARY STUDIES ARE PLANNED: PD-L1 Combined Positivity Score on carcinoma cells and stromal immune cells of diagnostic biopsy specimen will be correlated to disease free survival. The study of gut microbiota will aim to determine if baseline intestinal bacteria correlates with tumor response. Proteomic analysis on blood samples will compare long-term responder after CRT with durvalumab to non-responder to identify biomarkers. CONCLUSION: Results of the present study will be of great importance to evaluate the impact of immunotherapy in combination with CRT and decipher immune response in this unmet need clinical situation. TRIAL REGISTRATION: ClinicalTrials.gov, NCT: 03777813.Trial registration date: 5th December 2018.
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Carcinoma , Neoplasias Esofágicas , Humanos , Proteômica , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Quimiorradioterapia , Neoplasias Esofágicas/terapia , Imunoterapia , Ensaios Clínicos Controlados Aleatórios como Assunto , Estudos Multicêntricos como Assunto , Ensaios Clínicos Fase II como AssuntoRESUMO
BACKGROUND: Patients with recurrent or metastatic head and neck squamous cell carcinoma (R/M-HNSCC) have a poor prognosis and limited therapeutic options. Immune checkpoint inhibitors (ICIs) are effective in patients with tumor progression < 6 months following first-line, platinum-based chemotherapy (PBC), but data are missing for patients with progression ≥ 6 months after the last platinum dose. METHODS: Retrospective analysis (six French centers, 2008-2019) of all consecutive R/M-HNSCC patients. treated first-line with PBC and tumor progression ≥ 6 months after the last platinum dose. PRIMARY ENDPOINT: progression-free survival after second-line therapy (PFS2). Additional endpoints: overall survival from Day 1 of first-line (OS1) and second-line (OS2) therapy. RESULTS: R/M-HNSCC patients (n = 144) received cisplatinum (n = 67, 47%) or carboplatinum (n = 77, 53%) first-line. Response after first-line: complete response (CR; n = 16, 11%); partial response (PR; n = 77, 53%); stable disease (n = 22, 15%). Second-line therapy: PBC (n = 95, 66%); platinum-free regimen (PFR) (n = 25, 17%); ICI (n = 24, 17%). Median [95% confidence interval] PFS (months): PBC 5.0 [3.8-6.2]; PFR 4.0 [1-7.0]; ICI 2.0 [0.4-3.6] (p = 0.16). For PBC, PFR, and ICI, respectively: OS1 30, 23, and 29 months (p = 1.02); OS2 14, 10, and 16 months (p = 0.25); PR, 26%, 16%, and 21% patients; CR, 0%, 8%, and 4% patients. For subsequent lines, ICIs were administered for PBC (n = 11, 12%) and PFR (n = 2, 8%). No predictive factor for efficacy (PFS, OS) was identified. CONCLUSIONS: Our retrospective study suggests similar efficacy regarding OS2 for second-line chemotherapy or ICI in R/M-HNSCC patients with progression ≥ 6 months after the last first-line platinum dose.
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Neoplasias de Cabeça e Pescoço , Inibidores de Checkpoint Imunológico , Humanos , Carcinoma de Células Escamosas de Cabeça e Pescoço/tratamento farmacológico , Estudos Retrospectivos , Inibidores de Checkpoint Imunológico/uso terapêutico , Recidiva Local de Neoplasia/tratamento farmacológico , Recidiva Local de Neoplasia/patologia , Neoplasias de Cabeça e Pescoço/tratamento farmacológico , Platina/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêuticoRESUMO
Background: Mobility of lung tumors is induced by respiration and causes inadequate dose coverage. Objective: This study quantified lung tumor motion, velocity, and stability for small (≤5 cm) and large (>5 cm) tumors to adapt radiation therapy techniques for lung cancer patients. Material and Methods: In this retrospective study, 70 patients with lung cancer were included that 50 and 20 patients had a small and large gross tumor volume (GTV). To quantify the tumor motion and velocity in the upper lobe (UL) and lower lobe (LL) for the central region (CR) and a peripheral region (PR), the GTV was contoured in all ten respiratory phases, using 4D-CT. Results: The amplitude of tumor motion was greater in the LL, with motion in the superior-inferior (SI) direction compared to the UL, with an elliptical motion for small and large tumors. Tumor motion was greater in the CR, rather than in the PR, by 63% and 49% in the UL compared to 50% and 38% in the LL, for the left and right lung. The maximum tumor velocity for a small GTV was 44.1 mm/s in the LL (CR), decreased to 4 mm/s for both ULs (PR), and a large GTV ranged from 0.4 to 9.4 mm/s. Conclusion: The tumor motion and velocity depend on the tumor localization and the greater motion was in the CR for both lobes due to heart contribution. The tumor velocity and stability can help select the best technique for motion management during radiation therapy.
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To evaluate the educational impact on radiation oncology residents in training when introducing an automatic segmentation software in head and neck cancer patients regarding organs at risk (OARs) and prophylactic cervical lymph node level (LNL) volumes. Two cases treated by exclusive intensity-modulated radiotherapy were delineated by an expert radiation oncologist and were considered as reference. Then, these cases were delineated by residents divided into two groups: group 1 (control group), experienced residents delineating manually, group 2 (experimental group), young residents on their first rotation trained with automatic delineation, delineating manually first (M -) and then after using the automatic system (M +). The delineation accuracy was assessed using the Overlap Volume (OV). Regarding the OARs, mean OV was 0.62 (SD = 0.05) for group 1, 0.56 (SD = 0.04) for group 2 M - , and 0.61 (SD = 0.03) for group 2 M + . Mean OV was higher in group 1 compared to group 2 M - (p = 0.01). There was no OV difference between group 1 and group 2 M + (p = 0.67). Mean OV was higher in the group 2 M + compared to group 2 M - (p < 0.003). Regarding LNL, mean OV was 0.53 (SD = 0.06) in group 1, 0.54 (SD = 0.03) in group 2 M - , and 0.58 (SD = 0.04) in group 2 M + . Mean OV was higher in group 2 M + for 11 of the 12 analysed structures compared to group 2 M - (p = 0.016). Prior use of the automatic delineation software reduced the average contouring time per case by 34 to 40%. Prior use of atlas-based automatic segmentation reduces the delineation duration, and provides reliable OARs and LNL delineations.
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Neoplasias de Cabeça e Pescoço , Radioterapia (Especialidade) , Radioterapia de Intensidade Modulada , Humanos , Planejamento da Radioterapia Assistida por Computador , Neoplasias de Cabeça e Pescoço/radioterapia , Órgãos em RiscoRESUMO
Gastric cancer is the 6th most common cancer in the world. Gastric adenocarcinomas can be divided into two groups: gastroesophageal junction adenocarcinomas and distal gastric adenocarcinomas, with different risk factors and potentially different therapeutic strategies. Therapeutic strategy for esogastric adenocarcinoma is multimodal. Gastric adenocarcinomas are managed with surgery and peri-operative chemotherapy. Gastroesophageal junction adenocarcinomas can either be treated surgically after neoadjuvant chemoradiotherapy or in the same way than gastric adenocarcinomas. There is currently no evidence of superiority of either treatment strategy. Recently, nivolumab has been validated as an adjuvant therapy for patients with esophageal cancer who received preoperative chemoradiotherapy and had residual tumor on the surgical specimen. In the absence of preoperative treatment, adjuvant chemoradiotherapy or chemotherapy should be discussed on a patient-by-patient basis. Currently, there is not indication for targeted therapies, nor for adapting postoperative treatment according to the response to preoperative treatment. The only validated indication for immunotherapy is as adjuvant treatment of esophageal cancer, but many studies are ongoing and may change practices in the future. The objective of this review is to synthesize the literature concerning the management of localized esogastric adenocarcinoma.
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Adenocarcinoma , Neoplasias Esofágicas , Neoplasias Gástricas , Humanos , Terapia Combinada , Neoplasias Gástricas/tratamento farmacológico , Neoplasias Gástricas/cirurgia , Quimiorradioterapia Adjuvante , Terapia Neoadjuvante , Neoplasias Esofágicas/cirurgia , Neoplasias Esofágicas/tratamento farmacológico , Adenocarcinoma/cirurgia , Adenocarcinoma/tratamento farmacológico , Junção Esofagogástrica/cirurgia , Junção Esofagogástrica/patologia , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêuticoRESUMO
BACKGROUND: The aim of this study is to compare the dose delivered to the organs at risk (OAR), using static beams (SF) and a dynamic conformational arc (DCA) with flattening filter free (FFF) beams, for lung stereotactic body radiation therapy (SBRT). METHODS: 100 patients with lung cancer were treated with SBRT, using FF beams (TrueBeam STx, 6 MV, IQ = 0.67, 600 MU/min), separated into two groups: DCA (50 patients) and SF (50 patients). These patients were retrospectively re-planned using 6XFFF beams, IQ = 0.63, 1400 MU/min. The beam-on time and dosimetric gain on planning target volume (PTV) and OARs (heart, spinal cord, planning risk volume (PRV) of spinal cord, esophagus, lungs and ribs) were analyzed according to tumor location. The comparison of median values was performed using the non-parametric Wilcoxon test (significance level: p < 0.05). RESULTS: PTV coverage was 98.90% versus 98.40% (DCA) and 98.8% versus 98.3% (SF) for the FF and FFF beams, respectively. The median dosimetric gain to the heart, spinal cord, PRV spinal cord, esophagus and lungs was 6% (4-11%) in the central region and 8% (2-23%) in the peripheral region, using FFF (p < 0.05). The dose received by the ribs decreases by 5-6 Gy, using FFF beams. The median gain in beam-on time ranged from 31% to 34% for SF and from 44 to 52% for DCA using FFF beams. CONCLUSIONS: The FFF beams reduce the dose received by all OARs, regardless of the used technique or tumor location, reducing treatment delivery time as well.
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Neoplasias Pulmonares , Radiocirurgia , Radioterapia de Intensidade Modulada , Humanos , Radiocirurgia/métodos , Planejamento da Radioterapia Assistida por Computador/métodos , Radioterapia de Intensidade Modulada/métodos , Dosagem Radioterapêutica , Redução da Medicação , Estudos Retrospectivos , Neoplasias Pulmonares/radioterapia , Neoplasias Pulmonares/cirurgia , Neoplasias Pulmonares/patologiaRESUMO
Introduction: Adenoid cystic carcinoma (AdCC) is a rare tumour as it accounts for about 10% of all salivary gland neoplasms. It occurs in all age groups with a predominance of women, but no risk factors have been identified to date. Although AdCC behaves as a slow-growing tumour, it is characterized by multiple and late recurrences. Therefore, we aim to update the knowledge of the treatment options in advanced and recurrent cases. Materials and Methods: We performed a systematic literature review to provide a synthesis of the practical knowledge required for AdCC non-surgical management. Altogether, 99 out of the 1208 available publications were selected for analysis. Results: AdCC is described as a basaloid tumour consisting of epithelial and myoepithelial cells. Immunohistochemistry is useful for diagnosis (PS100, Vimentin, CD117, CKit, muscle actin, p63) and for prognosis (Ki67). Identified mutations could lead to therapeutic opportunities (MYB-NFIB, Notch 1). The work-up is mainly based on neck and chest CT scan and MRI, and PET-CT with 18-FDG or PSMA can be considered. Surgical treatment remains the gold standard in resectable cases. Post-operative intensity modulated radiotherapy is the standard of care, but hadron therapy may be used in specific situations. Based on the available literature, no standard chemotherapy regimen can be recommended. Conclusion: There is currently no consensus on the use of chemotherapy in AdCC, either concomitantly to RT in a postoperative setting or at a metastatic stage. Further, the available targeted therapies do not yet provide significant tumour response.
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Rectal cancer is a common disease of the elderly. Current treatment recommendations are established for young subjects in good general health condition, without taking into account the frailty, comorbidities and polymedications inherent in patients over 75 years old. For locally advanced lower and middle rectal cancers (T3, T4 or N+), these are based on variations of regimens including neoadjuvant chemoradiotherapy, surgery of the rectum with total removal of the mesorectum, and a possibility of adjuvant chemotherapy. This restrictive treatment presents a problem of compliance and is not without adverse effects. Treatment by short exclusive radiotherapy or chemoradiotherapy with close monitoring according to the Watch and Wait strategy can be proposed to fragile patients not eligible for surgery, even if there is a non-negligible risk of recurrence.
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Neoplasias Retais , Idoso , Quimiorradioterapia , Humanos , Terapia Neoadjuvante , Recidiva Local de Neoplasia , Neoplasias Retais/radioterapia , Reto/cirurgia , Resultado do TratamentoRESUMO
Since the establishment of the reform of medical studies' third cycle in 2017, the first two residency semesters define the "phase socle" whose objective is to provide the basic knowledge of the specialty. We have carried out a declarative survey, submitted in 2020 to all French residents in Oncology whose "phase socle" had taken place during the first 3 years of the reform. The main objectives of this survey were to evaluate the theoretical teaching of oncology as well as the practical hospital training provided during this phase. The response rate was 44% (among 355 residents, 155 answered). In terms of theoretical training, the level of satisfaction with the national teaching courses of the Collège National des Enseignants en Cancérologie and the distant learning courses on the SIDES-NG platform was considered satisfactory (average visual analog scale of 6.7/10 and 5.7/10, respectively). There was greater heterogeneity in the organization of local courses, of which only 50% of base phase residents benefited. In terms of practical training, the training value of the medical oncology and radiation oncology residencies was good (visual analogue scale 7.9/10 and 6.7/10, respectively), with educational objectives adapted to the base phase, but with a greater workload for medical oncology. This study provides feedback that shows the success of this reform in oncology. It also offers suggestions, which could be the basis to improve the formation of oncology residents.
Assuntos
Retroalimentação , Internato e Residência , Oncologia/educação , Satisfação Pessoal , Escolha da Profissão , Currículo/normas , Currículo/estatística & dados numéricos , Feminino , França , Humanos , Internato e Residência/legislação & jurisprudência , Internato e Residência/organização & administração , Internato e Residência/normas , Internato e Residência/estatística & dados numéricos , Masculino , Oncologia/normas , Oncologia/estatística & dados numéricos , Radioterapia (Especialidade)/educação , Radioterapia (Especialidade)/normas , Radioterapia (Especialidade)/estatística & dados numéricos , Inquéritos e Questionários/estatística & dados numéricos , Fatores de Tempo , Escala Visual AnalógicaRESUMO
At diagnosis, about 15% of patients with pancreatic cancer present with a resectable tumour, 50% have a metastatic tumour, and 35% a locally advanced tumour, non-metastatic but unresectable due to vascular invasion, or borderline resectable. Despite the technical progress made in the field of radiation therapy and the improvement of the efficacy of chemotherapy, the prognosis of these patients remains very poor. Recently, the role of radiation therapy in the management of pancreatic cancer has been much debated. This review aims to evaluate the role of radiation therapy for patients with locally advanced tumours.