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Despite increasing numbers of women availing themselves of assisted reproductive technology (ART), effects on cancer risk remain unresolved. Given hormonal exposures, breast cancer risk is of particular concern. The aim of this study is to investigate breast cancer risk amongst women giving birth following ART as compared to that amongst women who gave(More)
PURPOSE To estimate actual utilization rates of radiation therapy (RT) in Norway, describe time trends (1997-2010), and compare these estimates with corresponding optimal RT rates. METHODS AND MATERIALS Data from the population-based Cancer Registry of Norway was used to identify all patients diagnosed with cancer and/or treated by RT for cancer in(More)
BACKGROUND Treatment of early stage rectal cancer has excellent oncological results. To reduce treatment-related mortality and morbidity and improve functional results, a focus on local resections is increasingly important. OBJECTIVE The purpose of this study was to compare outcomes after transanal endoscopic microsurgery and total mesorectal excision for(More)
BACKGROUND The Norwegian Rectal Cancer Project was initated in 1993 with the aims of improving surgery, decreasing local recurrence rates, improving survival, and establishing a national rectal cancer registry. Here we present results from the Norwegian Colorectal Cancer Registry (NCCR) from 1993 to 2010. MATERIAL AND METHODS A total of 15 193 patients(More)
PURPOSE Regular use of aspirin (acetylsalicylic acid) is associated with reduced incidence and mortality of colorectal cancer (CRC). However, aspirin as primary prevention is debated because of the risk of hemorrhagic adverse effects. Aspirin as secondary prevention may be more justified from a risk-benefit perspective. We have examined the association(More)
BACKGROUND Providing accurate predictions of long-term net survival for recently diagnosed cancer patients is challenging due to the lack of follow-up. The aim of this study was to empirically compare predictions of net survival obtained from a flexible parametric excess hazard model to predictions obtained using the period and hybrid approaches. METHODS(More)
BACKGROUND AND PURPOSE Trials in rectal cancer have shown that radiotherapy (RT) decreases local recurrence rates, whereas the effects on survival are uncertain. Swedish and Norwegian oncologists have had different treatment recommendations. The aim was to evaluate local recurrence rates and survival in the two countries. PATIENTS AND METHODS Between 1995(More)
BACKGROUND Population-based studies for gastric adenocarcinoma are scarce, particularly studies conducted within a defined geographical area with publicly available censuses that allow incidence rates to be calculated. MATERIAL AND METHODS Population-based study in Central Norway from 2001 to 2011, covering a population of 636 000-680 000, respectively.(More)
BACKGROUND AND PURPOSE Preoperative (chemo)radiotherapy ((C)RT) for rectal cancer is, in Norway, restricted to patients with cT4-stage or threatened circumferential resection margin. This nationwide population-based study assessed the use of preoperative (C)RT in Norway and its impact on treatment outcomes. PATIENTS AND METHODS Data from The Norwegian(More)
BACKGROUND AND OBJECTIVE An increasing number of children are born after assisted reproductive technology (ART), and monitoring their long-term health effects is of interest. This study compares cancer risk in children conceived by ART to that in children conceived without. METHODS The Medical Birth Registry of Norway contains individual information on(More)