Publications by authors named "Arne Solberg"

Background: Between 2012 and 2015 we conducted a randomized controlled trial in prostate cancer patients comparing weekly 2-D portal imaging versus daily 3-D verification.

Aim: To evaluate the clinical outcomes of image guided radiotherapy by presenting rectal and urinary side effects, health related quality of life and progression free survival after 5-years follow up of a randomized controlled trial.

Methods: We randomized 260 men with intermediate or high-risk prostate cancer to weekly 2-D portal imaging with 15 mm margin from CTV to PTV (Arm A) or daily 3-D cone-beam computer tomography with 7 mm margins (Arm B).

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Background: Cisplatin-based chemotherapy (CBCT) in testicular cancer (TC) is associated with elevated venous thromboembolism (VTE) risk, but trials evaluating the safety and efficacy of thromboprophylaxis are lacking.

Objective: To evaluate the arterial thromboembolism (ATE) and VTE incidence and risk factors during first-line CBCT for metastatic TC, and the effect of thromboprophylaxis on VTE and bleeding.

Design Setting And Participants: In a population-based study, 506 men administered first-line CBCT during 2000-2014 at three university hospitals in Norway were included.

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Purpose: To study the use of interventions and symptom relief for adult patients with incurable cancer admitted to an acute palliative care unit providing integrated oncology and palliative care services.

Methods: All admissions during 1 year were assessed. The use of interventions was evaluated for all hospitalizations.

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Objective: Simultaneous PET/MRI combines soft-tissue contrast of MRI with high molecular sensitivity of PET in one session. The aim of this prospective study was to evaluate detection rates of recurrent prostate cancer by F-fluciclovine PET/MRI.

Methods: Patients with biochemical recurrence (BCR) or persistently detectable prostate specific antigen (PSA), were examined with simultaneous F-fluciclovine PET/MRI.

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Background: Testicular germ cell tumor (TGCT) patients and survivors have excess mortality compared to the general male population, but relative survival (RS) has been scarcely studied. We investigated causes of excess mortality and their impact on RS among men diagnosed with TGCT in Norway, 1953-2015.

Methods And Findings: Using registry data (n = 9541), standardized mortality ratios (SMRs) and RS were calculated.

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Article Synopsis
  • Curative radiation therapy is essential for prostate cancer treatment, and the study analyzed long-term risks of second cancers (SC) and overall survival (OS) among patients receiving hormone therapy (ET) alone versus combined with radiation (RT).
  • Among the 860 analyzed patients, those receiving combined treatment had a higher incidence of SC, especially urinary bladder cancer (UBC), but improved overall survival rates compared to those on hormone therapy alone.
  • The findings indicate that despite a heightened risk for certain second cancers, the overall survival benefits associated with combined ET and RT therapies significantly outweigh the potential risks.
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The aim of this registry-based cohort study was to estimate second cancer (SC) risk following radical prostate cancer (PC) treatment and evaluate if the risk was influenced by radiotherapy. We collected data from the Cancer Registry of Norway on all patients with PC as first cancer diagnosis, from 1997 to 2014. Standardized incidence ratios (SIRs) for SC were calculated by comparing our cohort to the standard male population.

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•Modern IGRT has given new insight regarding organ motion in radiotherapy.•Rectal volume variation may increase the risk of biochemical and local failure.•Rectal volume decreased significantly during eight weeks of radiotherapy.

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Background: Erectile dysfunction is a common side effect of prostate cancer (PC) therapy. In this randomized study (The RIC-study) we used patient reported outcomes to evaluate sexual function 18 months after combined endocrine therapy and radical radiotherapy (RT) given with either wide or tight planning target volume (PTV) margins. We also analyzed the impact of radiation dose to penile bulb on sexual function.

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Purpose: Prostate cancer (PC) patients who undergo antiandrogen monotherapy are offered prophylactic radiation therapy (PRT) to the breast buds to avoid gynecomastia. The aim of the present study was to evaluate whether the risk of breast cancer (BC) in men with PC as their first cancer diagnosis was influenced by PRT.

Methods And Materials: From the Norwegian Cancer Registry, we collected data from all patients with PC as their first cancer diagnosis from 1997 to 2014.

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Background: Novel cancer drugs are subject to strict scientific evaluation of safety and efficacy and usually undergo a cost effectiveness analysis before approval for use in clinical practice. For new techniques in radiotherapy (RT) such as image-guided radiotherapy (IGRT), this is often not the case. We performed a randomized controlled trial to compare daily cone beam computer tomography (CBCT) IGRT with reduced planning target volume (PTV) margins vs weekly orthogonal portal imaging with conventional PTV margins.

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Background: In Alpharadin in Symptomatic Prostate Cancer (ALSYMPCA) trial, radium-223 versus placebo prolonged overall survival with favorable safety in castration-resistant prostate cancer patients with symptomatic bone metastases. Long-term radium-223 monitoring underlies a comprehensive safety and risk/benefit assessment.

Objective: To report updated ALSYMPCA safety, including long-term safety up to 3 yr after the first injection.

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Background: In high-risk prostate cancer (PCa), no study with observation times beyond 10 yr has demonstrated survival improvement after addition of prostatic radiotherapy (RAD) to endocrine treatment (ET) alone.

Objective: To compare mortality rates in patients receiving ET alone versus ET + RAD.

Design, Settings, And Participants: From 1996 to 2002, 875 Scandinavian patients with high-risk (90%) or intermediate PCa were randomized to ET or ET + RAD (The Scandinavian Prostate Cancer Group-7).

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Background: Long-term relative survival (RS) data for testicular germ cell tumor (TGCT) patients are scarce. We aimed to analyze long-term RS among TGCT patients diagnosed in Norway, between 1953 and 2012.

Methods: Data sources were the Cancer Registry of Norway and the Norwegian Cause of Death Registry.

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Background: A contralateral tumor occurs in 3.5-5% of men diagnosed with testicular germ cell cancer (TGCC). Biopsy of the contralateral testis may detect intratubular germ cell neoplasia ITGCNU, a precursor of TGCC.

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Background: Bone metastases frequently cause skeletal events in patients with metastatic castration-resistant prostate cancer. Radium-223 dichloride (radium-223) selectively targets bone metastases with high-energy, short-range α-particles. We assessed the effect of radium-223 compared with placebo in patients with castration-resistant prostate cancer and bone metastases.

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Recent genome-wide association studies have identified single-nucleotide polymorphisms (SNPs) associated with testicular germ cell tumor (TGCT) risk in the genes ATF7IP, BAK1, DMRT1, KITLG, SPRY4 and TERT. In the present study, we validate these associations in a Scandinavian population, and explore effect modification by parental sex and differences in associations between the major histological subtypes seminoma and non-seminoma. A total of 118 SNPs in the six genes were genotyped in a population-based Swedish-Norwegian sample comprising 831 TGCT case-parent triads, 474 dyads, 712 singletons and 3919 population controls.

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Purpose: From 1995 to 2003, 603 adult patients from Sweden and Norway with metastatic testicular nonseminomatous germ cell tumor (NSGCT) were included prospectively in a population-based protocol with strict guidelines for staging, treatment, and follow-up. Patients with extragonadal primary tumor or previous treatment for contralateral testicular tumor were excluded. The basic strategy was to individualize treatment according to initial tumor marker response.

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Objective: Post-treatment prostate biopsy side-effects were evaluated in patients with locally advanced prostate cancer on endocrine therapy alone or combined with radiotherapy in the Scandinavian Prostate Cancer Group-7 randomized trial.

Material And Methods: One-hundred and twenty patients underwent transrectalultrasound-guided biopsy, and were requested to complete a questionnaire on side-effects occurring within 7 days' follow-up.

Results: The questionnaire was returned by 109 patients (91%) (endocrine therapy only 52%, combined endocrine therapy and radiotherapy 48%).

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Purpose: A binational, population-based treatment protocol was established to prospectively treat and follow patients with seminomatous testicular cancer. The aim was to standardize care for all patients with seminoma to further improve the good results expected for this disease.

Patients And Methods: From 2000 to 2006, a total of 1,384 Norwegian and Swedish patients were included in the study.

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Article Synopsis
  • The Scandinavian Prostate Cancer Group-7 trial showed that combining endocrine therapy with external-beam radiotherapy significantly improves survival in high-risk prostate cancer patients compared to endocrine therapy alone.
  • Biopsy results from 120 participants indicated that 66% of those receiving only endocrine treatment had residual cancer, while only 22% of those receiving combined treatment did, with a strong correlation to higher cancer aggressiveness.
  • Residual cancer was linked to increased rates of biochemical recurrence, local progression, clinical recurrence, and cancer-specific death, underscoring the importance of combined treatment for better outcomes.
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