Publications by authors named "Stalpers L"

Normal tissue reactions vary significantly among patients receiving the same radiation treatment regimen, reflecting the multifactorial etiology of late radiation toxicity. Predicting late radiation toxicity is crucial, as it aids in the initial decision-making process regarding the treatment modalities. For patients undergoing radiotherapy, anticipating late toxicity allows for planning adjustments to optimize individualized care.

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Efficacy of current treatment options for cervical cancer require improvement. Previous studies have shown the enhancing effects of the addition of PARP1-inhibitors to chemoradiotherapy and thermoradiotherapy. The aim of our present study was to test efficacy of different combinations of treatment modalities radiotherapy, cisplatin, hyperthermia and PARP1-inhibitors using tumor models, treated patient samples and tumor models.

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Background: Guidelines recommend the extension of the pelvic radiotherapy volume to the para-aortic region in locally advanced cervical cancer and ≥3 suspicious pelvic lymph nodes (PLN) on imaging. Whether this recommendation is also valid for clinically early stages is uncertain. The objective of this study was to investigate the para-aortic (PAO) lymph node recurrence rate in patients with early-stage cervical cancer, ≥3 metastatic PLN, and negative common iliac nodes after a radical hysterectomy followed by pelvic (chemo)radiotherapy without extension to the PAO region.

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Article Synopsis
  • The study aimed to validate the predictive ability of the γ-H2AX foci decay ratio (γ-FDR) for late radiation toxicity in a diverse group of pelvic cancer patients, following earlier findings in prostate cancer patients.
  • Analysis involved 88 patients with long-term follow-up, assessing toxicity through both physician and patient-reported measures, while examining γ-FDR values in irradiated lymphocytes.
  • Results showed lower toxicity rates compared to prior studies, with no significant correlation between γ-FDR levels and severe toxicity, indicating a minimal decline in patients' quality of life post-treatment.
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Cervical cancer is the fourth most common cancer in women worldwide and is caused by persistent infection with high-risk types of human papillomavirus (HPV). HPV viral load, the amount of HPV DNA in a sample, has been suggested to correlate with cervical disease severity, and with clinical outcome of cervical cancer. In this systematic review, we searched three databases (EMBASE, PubMed, Web of Science) to examine the current evidence on the association between HPV viral load in cervical samples and disease severity, as well as clinical outcome.

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Background: [F]FDG-PET/CT is used for staging and treatment planning in patients with locally advanced cervical cancer (LACC). We studied if a PET-based prediction model could provide additional risk stratification beyond International Federation of Gynaecology and Obstetrics (FIGO) staging in our population with LACC to aid treatment decision making.

Methods: In total, 183 patients with LACC treated with chemoradiation between 2013 and 2018 were included.

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Background: Modern treatment guidelines for women with advanced cervical cancer recommend staging using 2-deoxy-2-[F]fluoro-D-glucose positron emission computed tomography ([F]FDG-PET/CT). However, the risk of false-positive nodes and therapy-related adverse events requires caution in treatment planning. Using data from the Netherlands Cancer Registry (NCR), we estimated the impact of [F]FDG-PET/CT on treatment management in women with locally advanced cervical cancer, i.

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Article Synopsis
  • A retrospective study evaluated the effectiveness of MRI, CT, and [F]FDG-PET-CT in detecting lymph node involvement in early-stage cervical cancer using data from the Netherlands Cancer Registry.
  • The study included 1676 patients evaluated with MRI, 926 with CT, and 379 with [F]FDG-PET-CT, finding that [F]FDG-PET-CT had the highest sensitivity for detecting nodal metastases at 80%, compared to 48% and 40% for MRI and CT, respectively.
  • While [F]FDG-PET-CT outperformed MRI and CT in sensitivity, MRI and CT had higher specificity, indicating that [F]FDG-PET
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Purpose: Without a clear definition of an optimal treatment plan, no optimization model can be perfect. Therefore, instead of automatically finding a single "optimal" plan, finding multiple, yet different near-optimal plans, can be an insightful approach to support radiation oncologists in finding the plan they are looking for.

Methods And Materials: BRIGHT is a flexible AI-based optimization method for brachytherapy treatment planning that has already been shown capable of finding high-quality plans that trade-off target volume coverage and healthy tissue sparing.

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Objective: Cancer patients are at risk of malnutrition, which is associated with poor oncological outcomes. The aim of this study was to assess the incidence of malnutrition before, during, and after radiotherapy in locally advanced cervical cancer patients. In addition, we evaluated the impact of malnutrition on survival, and whether and when malnourished patients were referred to a dietitian.

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Objective: Continuation of smoking after a cancer diagnosis increases the burdensome side effects from cancer treatment, and decreases the chances of cure. Smoking cessation may improve oncological outcomes in cancer patients. This study aims to evaluate if radiation oncologists can be motivated by a smoking cessation awareness intervention to discuss smoking status more frequently and increase the referral rate for smoking cessation-support.

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Objectives: patients with cancer who smoke have more side effects during and after treatment, and a lower survival rate than patients with cancer who quit smoking. Supporting patients with cancer to quit smoking should be standard care. The aim of this systematic review was to determine the most effective smoking cessation method for patients diagnosed with cancer.

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Purpose: Hyperthermia is a potent sensitizer of radiation therapy that improves both tumor control and survival in women with locally advanced cervical cancer (LACC). The optimal sequence and interval between hyperthermia and radiation therapy are still under debate.

Methods And Materials: We investigated the interval and sequence in vitro in cervical cancer cell lines, patient-derived organoids, and SiHa cervical cancer hind leg xenografts in athymic nude mice and compared the results with retrospective results from 58 women with LACC treated with thermoradiotherapy.

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Background: The oncological safety of only removing bulky, positive groin lymph nodes followed by radiotherapy without performing a complete inguino-femoral node dissection (IFL) in squamous cell cancer of the vulva is based on two small studies. The aim of this study was to confirm the oncological safety of this treatment policy.

Methods: The survival of consecutive patients with clinically suspicious and pathologically positive groin nodes treated with the selective removal of these nodes followed by radiotherapy was compared with the survival in historical controls matched for the variables extranodal spread and diameter of the metastasis > 15 mm and treated with a complete IFL.

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Background: Lymph node metastasis is an important prognostic factor in locally advanced cervical cancer (LACC). No imaging method can successfully detect all (micro)metastases. This may result in (lymph node) recurrence after chemoradiation.

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(1) Background: Over the past two decades use of new imaging modalities and the adaptation of applicators have allowed for advances in volumetric (3D) imaging-based brachytherapy practices for patients with locally advanced cervical cancer. The aim of this study was to compare the oncological outcome and toxicity for three consecutively introduced brachytherapy practices in a large single-center cohort; (2) Methods: Patients treated for cervical cancer with primary radiotherapy and curative intent were consecutively included in this retrospective, single-center cohort study from 2006 to 2019. This cohort was divided into three groups (CT, MRI, and MRI+needles) based on the timing of the introduction of a novel brachytherapy practice; 3D brachytherapy planning using CT- and MRI-guided adaptive brachytherapy and the use of parametrial interstitial needles, respectively.

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Objective: The in-house developed 70 MHz AMC-4 locoregional hyperthermia system has been in clinical use since 1984. This device was recently commercialized as the Alba 4D (Medlogix, Rome, Italy), with a similar geometrical 4-waveguide design. At the time of this study a hybrid Alba 4D was installed at our center, which incorporated elements of the AMC-4.

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Objective: Treatment strategies for bulky lymph nodes in patients with locally advanced cervical cancer scheduled for definitive chemoradiation include nodal boosting with radiotherapy, surgical debulking, or both. The aim of this retrospective cohort study was to compare survival and toxicity in patients receiving these treatments and to compare them with a group that received neither form of treatment.

Methods: Women diagnosed between January 2009 and January 2017 with International Federation of Gynecology and Obstetrics (FIGO) 2009 stage IB2, IIA2-IVA cervical cancer with lymph nodes ≥1.

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Patient-reported outcome measures (PROMs) are advocated for the monitoring of toxicity after radiotherapy. However, studies comparing physician- and patient-reported toxicity show low concordance. In this study, we compared physician- and patient-reported toxicity in long-term prostate cancer survivors after radiotherapy, and we determined the correlation with a presumable risk factor for late toxicity: γ-H2AX foci decay ratio (FDR).

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Radiotherapy with cisplatin (chemoradiation) is the standard treatment for women with locally advanced cervical cancer. Radiotherapy with deep hyperthermia (thermoradiation) is a well established alternative, but is rarely offered as an alternative to chemoradiation, particularly for patients in whom cisplatin is contraindicated. The scope of this review is to provide an overview of the biological rationale of hyperthermia treatment delivery, including patient workflow, and the clinical effectiveness of hyperthermia as a radiosensitizer in the treatment of cervical cancer.

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Upon discovery of lymph node metastasis during radical hysterectomy with pelvic lymphadenectomy in early-stage cervical cancer, the gynaecologist may pursue one of two treatment strategies: abandonment of surgery followed by primary (chemo)radiotherapy (PRT) or completion of radical hysterectomy, followed by adjuvant (chemo)radiotherapy (RHRT). Current guidelines recommend PRT over RHRT, as combined treatment is presumably associated with increased morbidity. However, this review of literature suggests there are no significant differences in survival and recurrence and total proportions of adverse events between treatment strategies.

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Article Synopsis
  • The number of epidemics and mortality rates from diseases in Amsterdam significantly decreased from 1554 to 2021, particularly for illnesses like plague, smallpox, and cholera.
  • This decline coincided with reductions in chronic mortality from diseases like tuberculosis, malaria, and dysentery, suggesting improvements in public health.
  • Factors contributing to these positive changes include better nutrition, increased wealth, greater compassion, and a deeper understanding of health, though ongoing social crises still pose risks.
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Purpose: Late radiation toxicity is a major dose-limiting factor in curative cancer radiation therapy. Previous studies identified several risk factors for late radiation toxicity, including both dose-volume factors and genetic predisposition. Herein, we investigated the contribution of genetic predisposition, particularly compared with dose-volume factors, to the risk of late radiation toxicity in patients treated with highly conformal radiation therapy.

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