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Yolande Lievens

Publications and source records attributed to Yolande Lievens.

13 recordsLinked to original sources
PubMed2026

Early and late CTCAE and patient-reported outcomes following lung cancer radiotherapy: A sex-stratified descriptive analysis from the REQUITE cohort.

BACKGROUND: Long-term prospective data on lung cancer patients treated with radiotherapy are limited, restricting understanding of outcomes and sex-specific characteristics. The multicentre REQUITE study provides standardized follow-up data from an international cohort. METHODS: We analysed longitudinal data from 530 lung cancer patients treated with radical radiotherapy (sequential or concurrent chemoradiotherapy, or stereotactic body radiation therapy [SBRT]) between 2014 and 2017 at 16 centres in Europe and the USA. Healthcare professionals prospectively recorded 21 pulmonary, oesophageal, neurological, cardiac, and skin adverse events using CTCAE v4.0. Patient-reported outcomes assessed symptoms, quality-of-life, fatigue, and physical activity. Adverse event incidence was stratified by sex, radiotherapy technique, chemotherapy administration, smoking status, and other clinical factors. RESULTS: At 12 months, 309 patients were evaluable, with 151 having follow-up beyond one year. Pulmonary adverse events were most frequent (40% grade ≥ 2), mainly dyspnoea and cough. Women had higher rates of oesophagitis, and more frequently reported dysphagia, and chest wall pain, while men experienced a higher frequency of cardiac adverse events. Exploratory subgroup analyses identified significant sex-related differences in grade ≥ 3 pulmonary adverse events following SBRT and in overall grade ≥ 2 oesophageal adverse events among patients with clinical stage I-II and those aged >70 years. Patient-reported outcomes showed persistent fatigue and reduced physical activity, particularly in females. Symptom prevalence and severity varied by sex, age, treatment modality, smoking status, and clinical stage. CONCLUSION: The REQUITE-Lung cohort provides prospectively collected real-world data on radiotherapy-related adverse events in lung cancer patients. This study describes patterns of adverse events and patient-reported outcomes according to sex, age, and treatment characteristics. These findings are hypothesis-generating and may support future validation in independent and pooled datasets.

Patient-reported outcomes↗
PubMed2006

Involved-field radiotherapy for patients in partial remission after chemotherapy for advanced Hodgkin's lymphoma.

PURPOSE: The use of radiotherapy in patients with advanced Hodgkin's lymphoma (HL) is controversial. The purpose of this study was to describe the role of radiotherapy in patients with advanced HL who were in partial remission (PR) after chemotherapy. METHODS: In a prospective randomized trial, patients <70 years old with previously untreated Stage III-IV HL were treated with six to eight cycles of mechlorethamine, vincristine, procarbazine, prednisone/doxorubicin, bleomycine, vinblastine hybrid chemotherapy. Patients in complete remission (CR) after chemotherapy were randomized between no further treatment and involved-field radiotherapy (IF-RT). Those in PR after six cycles received IF-RT (30 Gy to originally involved nodal areas and 18-24 Gy to extranodal sites with or without a boost). RESULTS: Of 739 enrolled patients, 57% were in CR and 33% in PR after chemotherapy. The median follow-up was 7.8 years. Patients in PR had bulky mediastinal involvement significantly more often than did those in CR after chemotherapy. The 8-year event-free survival and overall survival rate for the 227 patients in PR who received IF-RT was 76% and 84%, respectively. These rates were not significantly different from those for CR patients who received IF-RT (73% and 78%) or for those in CR who did not receive IF-RT (77% and 85%). The incidence of second malignancies in patients in PR who were treated with IF-RT was similar to that in nonirradiated patients. CONCLUSION: Patients in PR after six cycles of mechlorethamine, vincristine, procarbazine, prednisone/doxorubicine, bleomycine, vinblastine treated with IF-RT had 8-year event-free survival and overall survival rates similar to those of patients in CR, suggesting a definite role for RT in these patients.

Adolescent↗
PubMed2006

Involved-node radiotherapy (INRT) in patients with early Hodgkin lymphoma: concepts and guidelines.

BACKGROUND AND PURPOSE: To describe new concepts for radiation fields in patients with early stage Hodgkin lymphoma treated with a combined modality. PATIENTS AND MATERIALS: Patients receiving combined modality therapy with at least 2 or 3 cycles of chemotherapy prior to radiotherapy. Pre- and postchemotherapy cervical and thoracic CT scans are mandatory and should be performed, whenever possible, in the treatment position with the use of image fusion capabilities. A pre-chemotherapy PET scan is strongly recommended to increase the detection of involved lymph nodes. RESULTS: Radiation fields are designed to irradiate the initially involved lymph nodes exclusively and to encompass their initial volume. In some cases, radiation fields are slightly modified to avoid unnecessary irradiation of muscles or organs at risk. CONCLUSIONS: The concept of involved-node radiotherapy (INRT) described here is the first attempt to reduce the size of radiation fields compared to the classic involved fields used in adult patients. Proper implementation of INRT requires adequate training and an efficient prospective or early retrospective quality assurance program.

Combined Modality Therapy↗
PubMed2005

Economic consequence of local control with radiotherapy: cost analysis of internal mammary and medial supraclavicular lymph node radiotherapy in breast cancer.

PURPOSE: To investigate the financial implications of radiotherapy (RT) to the internal mammary and medial supraclavicular lymph node chain (IM-MS) in postoperative breast cancer. METHODS AND MATERIALS: A cost-effectiveness and cost-utility analysis were performed, using Markov models, comparing the early and delayed costs and effects of IM-MS during a 20-year time span from a societal viewpoint. The outcome estimates were based on Level I evidence from postoperative RT literature and the cost estimates on the standard practice of the Leuven University Hospitals, with the RT costs derived from an activity-based costing program developed in the department. RESULTS: On the basis of the assumptions of the model and seen during a 20-year time span, primary treatment including IM-MS RT results in a cost savings (approximately 10,000) compared with a strategy without RT. Because IM-MS RT also results in better clinical effectiveness and greater quality of life, the treatment with IM-MS dominates the approach without IM-MS. Sensitivity analyses confirmed the robustness of these results in all tested circumstances. Although threshold values were found for the cost of IM-MS, the cost at relapse, and the quality of life after treatment, these were substantially different from the baseline estimates, indicating that it is very unlikely that omitting IM-MS would become superior. CONCLUSION: This ex-ante cost evaluation of IM-MS RT showed that the upfront costs of locoregional RT are easily compensated for by avoiding the costs of treating locoregional and distant relapse at a later stage. The cost-sparing effect of RT should, however, be evaluated for a sufficiently long time span and is most specifically found in tumors with a rather slow natural history and a multitude of available systemic treatments at relapse, such as breast cancer.

Breast Neoplasms↗
PubMed2005

Quality control of involved-field radiotherapy in patients with advanced Hodgkin's lymphoma (EORTC 20884).

PURPOSE: To evaluate the impact of the quality of involved-field radiotherapy (IFRT) on clinical outcome in patients with advanced Hodgkin's lymphoma (HL) in complete remission (CR) after six to eight cycles of mechlorethamine, vincristine, procarbazine, prednisone-doxorubicin, bleomycin, and vinblastine (MOPP-ABV) chemotherapy. METHODS AND MATERIALS: A retrospective review of clinical and radiologic data, radiation charts, simulator films, and megavoltage (MV) photographs was performed. IFRT consisted of 24 Gy to all initially involved nodal areas and 16-24 Gy to all initially involved extranodal sites. Major violations were defined as no or only partial irradiation of an originally involved area, or a total dose <90% of the prescribed dose. RESULTS: Of the 739 patients who were enrolled in the trial between 1989 and 2000, 57% achieved a CR; 152 of 172 patients randomized to IFRT actually received radiotherapy; and in 135 patients, quality control was performed. The overall major violation rate was 47%, predominantly concerning target volumes. The total dose was correct in 81% of the patients. After a median follow-up of 6.5 years, there was no difference in cumulative failure rate between patients with or without major violations. There was no relationship between incidence or site of relapse and major protocol violations. CONCLUSION: In advanced-stage HL patients in complete remission after six to eight cycles of MOPP-ABV, the outcome was not influenced by violation of the radiotherapy protocol.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed2005

Towards evidence-based guidelines for radiotherapy infrastructure and staffing needs in Europe: the ESTRO QUARTS project.

BACKGROUND AND PURPOSE: Adequate and equitable access to radiotherapy (RT) must be a reasonable health care goal for the EU. However, there are large variations among the EU countries and even regional variations within countries in the provision of RT. In this report, we combine the best available evidence on the indications for RT with national epidemiological data to arrive at estimates for the appropriate level of RT infrastructure in the 25 EU countries. PATIENTS AND METHODS: Data from three systematic overviews of the best available evidence for the indication for RT in 23 main cancer types are combined with epidemiological data from the EUCAN and GLOBOCAN databases on the crude incidence of each of these cancers in the 25 EU countries. Together with published benchmarks for accelerator throughput this allows estimation of the number of linear accelerators per million people required to facilitate appropriate RT utilization rates in each country. Where possible, the estimates are compared with the detailed data available from Sweden. RESULTS: The crude incidence of the main cancer types shows large variation among the 25 EU countries. This reflects in part differences in exposure to aetiological risk factors and partly differences among the countries in population age structure. Correspondingly, the estimate of the required number of linear accelerators per million people showed considerable variation: ranging from 4.0 in Cyprus to 8.1 in Hungary. The average for the 25 countries was 5.9 per million people. These estimates were compared with available national guidelines and actual data on RT infrastructure and large shortfalls were found in many countries. Implications for health economics and capacity planning are briefly discussed. CONCLUSIONS: The QUARTS project has developed a model that establishes a direct and transparent link between epidemiological data and indications for RT based on the best available evidence. Comparison of the model estimates with current levels of RT infrastructure has revealed major inequalities in provision of RT in the 25 EU countries. Continuation of this study is recommended as a way of improving RT provision on rational grounds throughout the European community and as a model for health care planning in the EU.

Adult↗
PubMed2005

CHART in lung cancer: economic evaluation and incentives for implementation.

BACKGROUND AND PURPOSE: To investigate the financial consequences and the impact on daily implementation of CHART in lung cancer. PATIENTS AND METHODS: A cost-effectiveness and cost-utility analysis were performed using Markov models, comparing the early and delayed costs and effects of CHART for NSCLC over a 4-year time span from a societal viewpoint. The outcome estimates were based on the CHART literature, the cost estimates on the standard practice of the Leuven University Hospitals, the radiotherapy costs being derived from an activity-based costing (ABC) programme developed in the department. RESULTS: The additional societal cost per life-year gained was 9164 Euro, the incremental cost per quality-adjusted life-year 11,576 Euro. Sensitivity analyses confirmed the robustness of these results, the incremental cost-utility ratio remaining well under 20,000 Euro/QALY in all tested circumstances. The threshold analyses found the results of the study to be sensitive to the cost of CHART and to the quality of life after treatment. More specifically, standard treatment would become the optimal treatment if CHART would have a higher cost or would result in more long-term side effects. CONCLUSION: CHART should not be denied to patients with NSCLC on the basis of clinical or economic arguments. Other factors such as socio-economical, institutional, practical departmental and physician-bound barriers most probably explain the lack of implementation into daily practice.

Aged↗
PubMed2004

Overview of national guidelines for infrastructure and staffing of radiotherapy. ESTRO-QUARTS: work package 1.

BACKGROUND AND PURPOSE: The aim of this study was to collect the available guidelines for infrastructure and staffing throughout Europe and to develop general guidelines. MATERIALS AND METHODS: Questionnaires were sent to representatives in all European countries. Countries were divided into three groups, based on the GDP per capita (low, medium and high resource countries). Based on the results, general guidelines were developed. RESULTS: 41 countries (93.2%), representing over 99% of the European population responded. Guidelines for the number of linear accelerators and personnel were available in about 40% of the countries. For accelerators, the average was 1 per 183,000 inhabitants in the high, 1 per 284,000 in the medium and 1 per 500,000 in the low resource countries. For radiation oncologists, it varied between 1 per 150-400 patients (average: 250) and there was no clear difference between high, medium and low resource countries. For physicists, the average was 1 per 530 patients for high and 1 per 610 for medium or low resource countries. Guidelines for other equipment and staffing are highly dependent on local habits and complexity of the treatments. CONCLUSION: An accurate overview of existing guidelines for radiotherapy infrastructure and staffing is obtained. It is suggested to have one linear accelerator per 450 patients, one radiation oncologist per 200-250 patients and one physicist per 450-500 patients (or one per linac). It should be stressed, however, that these are only crude guidelines and that the actual needs heavily depend on population structure, cancer incidence and treatment strategies, which differ between the various countries.

Europe↗
PubMed2003

Activity-based costing: a practical model for cost calculation in radiotherapy.

PURPOSE: The activity-based costing method was used to compute radiotherapy costs. This report describes the model developed, the calculated costs, and possible applications for the Leuven radiotherapy department. METHODS AND MATERIALS: Activity-based costing is an advanced cost calculation technique that allocates resource costs to products based on activity consumption. In the Leuven model, a complex allocation principle with a large diversity of cost drivers was avoided by introducing an extra allocation step between activity groups and activities. A straightforward principle of time consumption, weighed by some factors of treatment complexity, was used. The model was developed in an iterative way, progressively defining the constituting components (costs, activities, products, and cost drivers). RESULTS: Radiotherapy costs are predominantly determined by personnel and equipment cost. Treatment-related activities consume the greatest proportion of the resource costs, with treatment delivery the most important component. This translates into products that have a prolonged total or daily treatment time being the most costly. The model was also used to illustrate the impact of changes in resource costs and in practice patterns. CONCLUSION: The presented activity-based costing model is a practical tool to evaluate the actual cost structure of a radiotherapy department and to evaluate possible resource or practice changes.

Accounting↗
PubMed2002

Dose-intensified accelerated vindesine-ifosfamide-cisplatin (VIP) chemotherapy followed by high-dose accelerated hyperfractionated radiotherapy in patients with pathologically proven stage IIIB non-small cell lung cancer: a feasibility study.

This study shows the feasibility of accelerated vindesine-ifosfamide-cisplatin chemotherapy, immediately followed by intensive radiotherapy to the residual tumour in responding patients, in 16 patients with pathologically proven stage IIIB non-small lung cancer. All toxicities were reversible, with only two of ten patients experiencing grade 3 oesophagitis, no treatment-related deaths and no serious late effects.

Antineoplastic Combined Chemotherapy Protocols↗
PubMed2002

Does sucralfate reduce early side effects of pelvic radiation? A double-blind randomized trial.

UNLABELLED: STUDY AND METHODS: A double-blind placebo-controlled study randomized 108 patients to investigate the effect of sucralfate on gastrointestinal side effects of pelvic radiation. RESULTS: Overall, pelvic radiation with the administered doses and fields and performed according to nowadays technical standards, was well tolerated. Comparison of the mean scores and the peak reactions for radiotherapy discomfort, diarrhoea and number of stools per day in the 80 evaluable patients showed no statistically significant difference between sucralfate and placebo. CONCLUSION: Based on these results, the use of sucralfate can not be recommended as standard practice.

Double-Blind Method↗