Publications by authors named "Luc R C W van Lonkhuijzen"

Objective: To highlight the unique clinical presentation of acute abdomen in granulosa cell tumor patients.

Methods: In a multicenter cohort study of adult-type granulosa cell tumors, women presenting with an acute abdomen at diagnosis were identified (Brink, 2025). After informed consent, clinical data were retrieved from patient records and collected in a Castor EDC database.

View Article and Find Full Text PDF

The purpose of the study is to determine whether circulating tumor DNA can be used as a prognostic biomarker and marker for monitoring treatment response in patients with an adult-type granulosa cell tumor (aGCT). Plasma samples of patients included in the multicenter GRANULOSA study were collected before and after surgery for primary or recurrent aGCT, during follow-up, and during systemic treatment. The presence of ctDNA containing the mutation was analyzed in 284 samples from 20 primary and 34 recurrent aGCT patients, using digital droplet PCR.

View Article and Find Full Text PDF

Objective: Human papillomavirus (HPV) infection is the primary cause of cervical cancer. Higher viral load, that is, a greater abundance of HPV DNA in a tumor, has been associated with poorer clinical outcomes, and may play a role in the more accurate prediction of (non-) responders to treatment. In this study, we investigated the correlation between HPV viral load, clinical outcomes, and immune parameters related to HPV infection.

View Article and Find Full Text PDF

: Fertility-sparing surgery (FSS) is a standard practice for managing early stage cervical cancer, yet significant variation exists in clinical approaches worldwide. Our objective was to ascertain current practices and preferences for cerclage use among expert centers globally regarding FSS in patients with early stage cervical cancer. : We conducted a cross-sectional survey from May to July 2023 involving expert centers identified through their scientific contributions and participation in international workgroups and conferences.

View Article and Find Full Text PDF

Background: As current literature does not provide sufficient data to support clear guidelines in patients with a rare adult-type granulosa cell tumor, we aim to investigate: (1) whether additional staging surgery following primary surgical treatment is necessary; (2) how long standard follow-up should be and (3) risk factors for disease recurrence.

Methods: A national multicenter prospective study was initiated in April 2018. Patients with suspected or confirmed adult-type granulosa cell tumor were eligible.

View Article and Find Full Text PDF

Objective: To compare menopause-related quality of life (QoL) after risk-reducing salpingectomy (RRS) versus risk-reducing salpingo-oophorectomy (RRSO) until 3 years of post-surgery.

Design: A prospective study (TUBA study) with treatment allocation based on patients' preference. Data were collected pre-surgery and at 3 months, 1 and 3 years of post-surgery.

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

In patients with the rare adult-type granulosa cell tumor (aGCT), surgery is the primary treatment for both primary and recurrent disease. In cases of inoperable disease, systematic therapy is administered, but variable response rates and drug resistance complicate predicting the most effective therapy. Drug screen testing on patient-derived cell lines may offer a solution.

View Article and Find Full Text PDF
Article Synopsis
  • Risk-reducing salpingo-oophorectomy (RRSO) significantly lowers the risk of high-grade serous carcinoma (HGSC) in women carrying BRCA1/2 genetic variants, but some still develop HGSC after the procedure.
  • A study involving 2,519 women found that the 20-year cumulative incidence of HGSC was low (1.5% for BRCA1 and 0.2% for BRCA2 carriers), with particular risk factors identified, such as older age at RRSO and incomplete embedding of RRSO specimens.
  • Implementing strict guidelines for timely RRSO and ensuring complete specimen embedding could further minimize the risk of developing HGSC in these patients
View Article and Find Full Text PDF
Article Synopsis
  • People with T1a cervical cancer usually do well, but there's still a chance their cancer might come back, and doctors need better guidance on how to manage this.
  • A study looked at over 900 patients from different hospitals to find out more about the chances of cancer returning after surgery.
  • The study found that only 4.1% of patients had their cancer return, and it happened more often in certain groups, showing that certain things like lymphovascular space invasion (LVSI) can change the risk.
View Article and Find Full Text PDF

Objective: Chemotherapy treatment modifications can impact survival in patients with ovarian cancer, particularly when the relative dose intensity falls below 85%. Exercise and dietary interventions may benefit treatment tolerability. This study aimed to explore the effects of a combined exercise and dietary intervention on secondary outcomes of the Physical Activity and Dietary intervention in OVArian cancer (PADOVA) trial, specifically relative dose intensity and progression-free survival.

View Article and Find Full Text PDF

Background: Response to hormonal therapy in advanced and recurrent endometrial cancer (EC) can be predicted by oestrogen and progesterone receptor immunohistochemical (ER/PR-IHC) expression, with response rates of 60% in PR-IHC > 50% cases. ER/PR-IHC can vary by tumour location and is frequently lost with tumour progression. Therefore, we explored the relationship between ER/PR-IHC expression and tumour location in EC.

View Article and Find Full Text PDF

Objective: The aim of this study was to describe the long-term outcome of asymptomatic BRCA1/2 germline pathogenic variant (GPV) carriers with high-grade serous carcinoma (HGSC) in their risk-reducing salpingo-oophorectomy (RRSO) specimen.

Methods: In a previously described cohort of asymptomatic BRCA1/2 GPV carriers derived from the Hereditary Breast and Ovarian cancer in the Netherlands (HEBON) study, women with HGSC at RRSO were identified. Main outcome was ten-year disease-free survival (DFS).

View Article and Find Full Text PDF

Purpose: The purpose of this study was to explore ovarian cancer patients' preferences regarding follow-up care and, in particular, the use of patient-reported outcome measures (PROMs) as an approach to personalise follow-up care.

Methods: Between May and June 2021, semi-structured interviews were conducted with ovarian cancer patients, who had finished their primary treatment at least 6 months prior and were receiving follow-up care at our centre. Interviews were transcribed verbatim and analysed using an inductive thematic approach.

View Article and Find Full Text PDF

Objective: To study physical activity and dietary intake among patients with ovarian cancer and to examine which demographic, clinical, and sociocognitive determinants are associated with these behaviours.

Methods: This cross-sectional study included 139 patients with ovarian cancer scheduled for (neo)adjuvant chemotherapy. Physical activity was measured with the Physical Activity Scale for the Elderly questionnaire (PASE).

View Article and Find Full Text PDF

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.

View Article and Find Full Text PDF

Purpose: This study aims to capture the complex clinical reasoning process during tailoring of exercise and dietary interventions to adverse effects and comorbidities of patients with ovarian cancer receiving chemotherapy.

Methods: Clinical vignettes were presented to expert physical therapists ( = 4) and dietitians ( = 3). Using the think aloud method, these experts were asked to verbalize their clinical reasoning on how they would tailor the intervention to adverse effects of ovarian cancer and its treatment and comorbidities.

View Article and Find Full Text PDF

Background: International guidelines recommend tailoring the radicality of hysterectomy according to the known preoperative tumor characteristics in patients with early-stage cervical cancer.

Objective: This study aimed to assess whether increased radicality had an effect on 5-year disease-free survival in patients with early-stage cervical cancer undergoing radical hysterectomy. The secondary aims were 5-year overall survival and pattern of recurrence.

View Article and Find Full Text PDF

(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.

View Article and Find Full Text PDF

Purpose: To investigate the prevalence of and clinical factors associated with high-grade serous carcinoma (HGSC) at risk-reducing salpingo-oophorectomy (RRSO) in asymptomatic -pathogenic variant (PV) carriers.

Patients And Methods: We included -PV carriers who underwent RRSO between 1995 and 2018 from the Hereditary Breast and Ovarian cancer in the Netherlands study. All pathology reports were screened, and histopathology reviews were performed for RRSO specimens with epithelial abnormalities or where HGSC developed after normal RRSO.

View Article and Find Full Text PDF

Objective: To evaluate the association of number of radical hysterectomies performed per year in each center with disease-free survival and overall survival.

Methods: We conducted an international, multicenter, retrospective study of patients previously included in the Surveillance in Cervical Cancer collaborative studies. Individuals with International Federation of Gynecology and Obstetrics (FIGO) 2009 stage IB1-IIA1 cervical cancer who underwent radical hysterectomy and had negative lymph nodes at final histology were included.

View Article and Find Full Text PDF

Background: In cervical cancer, presence of lymph-node macrometastases (MAC) is a major prognostic factor and an indication for adjuvant treatment. However, since clinical impact of micrometastases (MIC) and isolated tumor-cells (ITC) remains controversial, we sought to identify a cut-off value for the metastasis size not associated with negative prognosis.

Methods: We analyzed data from 967 cervical cancer patients (T1a1L1-T2b) registered in the SCCAN (Surveillance in Cervical CANcer) database, who underwent primary surgical treatment, including sentinel lymph-node (SLN) biopsy with pathological ultrastaging.

View Article and Find Full Text PDF

Background: This systematic review and meta-analysis synthesized evidence in patients with ovarian cancer at diagnosis and/or during first-line treatment on; (i) the association of body weight, body composition, diet, exercise, sedentary behavior, or physical fitness with clinical outcomes; and (ii) the effect of exercise and/or dietary interventions. Methods: Risk of bias assessments and best-evidence syntheses were completed. Meta-analyses were performed when ≥3 papers presented point estimates and variability measures of associations or effects.

View Article and Find Full Text PDF

Introduction: Studies on the impact of smoke-free policies (SFPs) on hospitals grounds on on-site smoking are scarce. On 1 October 2019, an SFP was implemented on the grounds of the Amsterdam UMC hospital in the Netherlands, including measures for sustained enforcement. This study assessed the impact of this SFP on smoking prevalence on hospital grounds up to 18 months after implementation.

View Article and Find Full Text PDF