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Objective: In this sub‐study from the 'PACCS' study, we explored the psychosocial experiences of children and adolescents in everyday life post‐cancer treatment and the possible factors that can moderate these experiences. Methods: This is a qualitative explorative study using semi‐structured interviews with 43 childhood cancer survivors between the ages of nine and 18 from Norway and Denmark. We conducted a secondary thematic analysis using Malterud's systematic text condensation. Results: Two main themes were identified: 'The post‐treatment gap between expectations and reality' comprised two subthemes: (1) lack of mastery and feeling different and (2) lack of understanding and acceptance. The second main theme, 'Managing the gap', comprised three subthemes: (1) information and knowledge, (2) adjustments and adaptions and (3) social support and openness. The findings reveal that the psychosocial challenges resulted from the remaining ability gap(s). Measures such as tailored information, school adjustments and social support were potential dynamic factors affecting the gap(s) positively or negatively. Psychosocial challenges post‐treatment are experiences of lack of acceptance and understanding from others. Conclusion: To safeguard a positive transition back to everyday life, health care providers should support the survivors' psychosocial care, including getting back to school and re‐entering social interactions. [ABSTRACT FROM AUTHOR]

Background: Incidence rates in Denmark of central nervous system (CNS) tumors remain among the highest in the world. Survival rates, however, have improved in the past decades in high‐income countries. Methods: We analyzed incidence and survival of childhood CNS tumors in Denmark diagnosed from 1997 to 2019 based on data from the Danish Childhood Cancer Registry and information on histological types, tumor localization, and treatment from medical records. Results: From 1997 to 2019, 949 children<15 years were diagnosed with a CNS tumor. Age‐standardized incidence was 42.1 (95% CI, 39.4–44.6) per million person‐years and stable during this period. Age‐specific incidence for children aged 0–4 years was 47.7 per million. More than one‐third (n = 374, 39.4%) were treated with surgery alone. Overall survival rates 5 and 10 years after diagnosis were 77.6% (95% CI, 74.7–80.2) and 74.7% (95% CI, 71.7–77.5). Five‐year overall survival improved from 73.0% (95% CI, 68.9–76.7) in 1997–2008 to 83.2% (95% CI, 79.2–86.4) in 2009–2019 (p‐value < 0.0001) in children aged 0–4 years (p = 0.0006). Conclusion: Incidence rates are stable but remain among the highest in the world. Despite improved survival rates in recent years in younger children, some subtypes still have a poor prognosis. [ABSTRACT FROM AUTHOR]

Introduction: The growing number of survivors of childhood cancer, with many years of life ahead, demonstrates the increasing clinical and public health relevance of investigating the risks of social and socioeconomic impairment after a childhood cancer diagnosis and the life-saving treatment. To enrich understanding of the mental, social and socioeconomic difficulties that childhood cancer survivors may face during their life-course, identify particularly vulnerable survivors and overcome the limitations of previous research, we initiated the Socioeconomic Consequences in Adult Life after Childhood Cancer in Scandinavia (SALiCCS) research programme. Methods: This Nordic cross-border research programme is a collaboration between the Danish Cancer Society, the Finnish Cancer Registry and Karolinska Institutet to investigate a broad range of mental, social and socioeconomic conditions in long-term childhood cancer survivors in Denmark, Finland and Sweden. SALiCCS is based on a registry-based matched cohort design, comprising five-year survivors of cancer diagnosed at ages 0–19 years (1971–2008 in Denmark, 1971–2009 in Finland, 1971–2011 in Sweden), age-, sex- and country-matched population comparisons and sibling comparisons who were followed over time. Outcomes of interest included mental disorders, educational achievements, employment and profession, family life and the need of social security benefits. Individual-level data linkage among various national registries provided the data for the research programme. Results: The SALiCCS core population comprises 21,292 five-year survivors, 103,303 population comparisons and 29,644 siblings as a second comparison group. The most common diagnoses in survivors were central nervous system tumours, leukaemias and lymphomas. Discussion: SALiCCS is the largest, most comprehensive population-based research initiative in this field, based on high-quality registry data with minimal risk of bias. The findings will be informative for evidence-based survivorship care targeting not only somatic late effects but also psychosocial impairments. [ABSTRACT FROM AUTHOR]

Study Question: Is the rate of fatherhood among men diagnosed with cancer in childhood and early adulthood different from men without cancer, and, if so, have the differences changed over time?Summary Answer: Men diagnosed with cancer have had significantly reduced rates of fatherhood compared with undiagnosed men; however, the rates of fatherhood among the cancer survivors have increased markedly over time.What Is Known Already: The number of children and young adolescents who survive cancer has steadily increased over recent decades, with a current 5-year survival rate of approximately 80%. Consequently, life circumstances after cancer have gained increasing importance, including the desire among survivors to have children and a family. ARTs to aid reproduction among cancer survivors have been developed, and fertility preservation is increasingly a topic being discussed before undergoing cancer treatment. But the potential for fertility preservation differs dependent on age at diagnosis and type of cancer. Earlier studies have shown a decreased fertility rate among survivors of child and adolescent cancer compared to those diagnosed in early adulthood.Study Design, Size, Duration: This study is a national, register-based cohort study. Men diagnosed with cancer in childhood and early adulthood (<30 years of age) were registered in the Danish Cancer Register in 1978-2016 (n = 9353). According to the time of diagnosis, each cancer-diagnosed man was randomly matched with 150 undiagnosed men from the background population within the same birth year. The men were followed until having their first child, death, migration or the end of the study (31 December 2017) in medical registers and socio-demographic population registers.Participants/materials, Setting, Methods: Fatherhood among the boys and young men diagnosed with cancer were compared with the age-matched comparison group in all statistical analyses. Cancer diagnoses were categorised as central nervous system (CNS) cancers, haematological cancers or solid cancers. Analyses were stratified by age at diagnosis (0-9, 10-19, 20-29 years) and time of diagnosis (1978-1989, 1990-1999, 2000-2009, 2010-2016). Death was incorporated as a competing risk in all analyses.Main Results and the Role Of Chance: The study population consisted of 9353 boys and young men diagnosed with cancer between 1978 and 2016 and 1 386 493 men in the age-matched comparison group. Those surviving CNS cancer as young men had the lowest hazard ratio (HR) of fatherhood compared with the age-matched comparison group (HR 0.67, 95% CI 0.57-0.79), followed by survivors of haematological cancers (HR 0.90, 95% CI 0.81-1.01), while the highest chance of fatherhood was among survivors of solid cancers (HR 1.16, 95% CI 1.12-1.20) with a slightly increased HR compared with undiagnosed males. The HR of becoming a father increased over time. From the first decade to the last decade 30 years later, the HR of becoming a father increased for solid tumours (HR 0.78, 95% CI 0.73-0.83 to HR 1.08, 95% CI 0.95-1.22), haematological cancers (HR 0.64, 95% CI 0.53-0.79 to HR 0.97, 95% CI 0.73-1.30) and CNS cancers (HR 0.44, 95% CI 0.34-0.57 to HR 0.98, 95% CI 0.49-1.95) compared to the age-matched comparison group. Also, when compared with the age-matched comparison group, men diagnosed with cancer when aged 20-29 years were more likely became fathers over the time of the study (HR 0.80, 95% CI 0.74-0.86 to HR 1.08, 95% CI 0.96-1.22).Limitations, Reasons For Caution: The study was based on register data, and information was not available about the men's fertility potential, whether they had a desire to have children and whether it was possible for them to find a partner. Information about fertility preservation, e.g. sperm freezing, could also have provided additional insights. Furthermore, information about diagnosis and ART treatment would have been beneficial.Wider Implications Of the Findings: Information and education of male patients diagnosed with cancer about fertility preservation options and their chances to create their own family is crucial. Reassuringly, time trends showed more men with a previous cancer diagnosis becoming fathers in recent years than in earlier years, reflecting that survival and fertility preservation have improved over time.Study Funding/competing Interest(s): R.S. received a PhD grant from the Rosa Ebba Hansen Foundation and from the Health Foundation (J.nr. 15-B-0095). The funding for the establishment of the DANAC II Cohort was obtained from the Rosa Ebba Hansen Foundation. The authors have no conflicts of interest to declare.Trial Registration Number: N/A. [ABSTRACT FROM AUTHOR]