Malignant renal tumours represent 5% of childhood cancers and include types with likely different aetiology: Wilms tumour (WT), rhabdoid renal tumour, kidney sarcomas and renal carcinomas. WT is the ...most common renal tumour in children, previously shown to vary internationally and with ethnicity. Using the comprehensive database of the International Incidence of Childhood Cancer study (IICC), we analysed global variations and time trends in incidence of renal tumour types in children (age 0‐14 years) and adolescents (age 15‐19 years). The results were presented by 14 world regions, and five ethnic groups in the US. We included 15 320 renal tumours in children and 800 in adolescents reported to the 163 contributing registries during 2001‐2010. In children, age‐standardised incidence rate (ASR) of renal tumours was 8.3 per million (95% confidence interval, CI = 8.1, 8.4); it was the highest in North America and Europe (9‐10 per million) and the lowest in most Asian regions (4‐5 per million). In the US, Blacks had the highest ASR (10.9 per million, 95% CI = 10.2, 11.6) and Asian and Pacific Islanders the lowest (4.4 per million, 95% CI = 3.6, 5.1). In adolescents, age‐specific incidence rate of renal tumours was 1.4 per million (95% CI = 1.3, 1.5). WT accounted for over 90% of all renal tumours in each age from 1 to 7 years and the proportion of renal carcinomas increased gradually with age. From 1996 to 2010, incidence remained mostly stable for WT (average annual percent change, AAPC = 0.1) and increased for renal carcinomas in children (AAPC = 3.7) and adolescents (AAPC = 3.2). Our findings warrant further monitoring.
What's new?
Based on more than 16,000 incident cases in the period 2001‐2010, this study offers the most complete overview to date of the worldwide patterns of renal tumours in children and adolescents. Using the comprehensive International Incidence of Childhood Cancer database, the authors also describe the distribution of rare entities such as rhabdoid renal tumour or kidney sarcomas. The results indicate the stable incidence of Wilms tumour, the most common renal tumour in children, consistently with a likely genetic origin. The rising incidence of renal carcinomas with age and over time is likely caused by environmental risk factors, warranting further monitoring.
Our study examines global patterns of Hodgkin lymphoma (HL) in 2020 and predicts the future incidence and mortality burden in 2040 using IARC's GLOBOCAN estimates of the number of new cases and ...deaths of HL in 185 countries. A total of 83 000 new cases of HL and 23 000 deaths from HL were estimated in 2020. In general, incidence and mortality rates were consistently higher in males (50% more cases and deaths than females) across world regions and countries. Incidence rates varied markedly by world region, at least 10‐fold in both sexes, with the highest incidence rates observed in Southern Europe. Mortality exhibited an inverse pattern compared to incidence, with rates elevated in Western Asia and Northern Africa. The number of HL incident cases is predicted to rise to around 107 000 cases (a 30% increase) by 2040 due to demographic changes, assuming global rates in 2020 remains unchanged. The findings provide a baseline and impetus for developing strategies that aim to reduce the burden of HL in future decades.
What's new?
This study examines variations in Hodgkin lymphoma (HL) incidence and mortality worldwide using the GLOBOCAN estimates. Incidence rates varied markedly by world region in the year 2020. Incidence rates were elevated in high‐income regions, with an inverted pattern for mortality. The aetiology of HL cannot explain the current variations in incidence, while advances in treatment are a key determinant of the inverse mortality profile. Incidence rates are predicted to rise by 2040 due to demographic changes. The findings provide a baseline and impetus for developing strategies that aim to reduce the burden of HL in future decades.
Global patterns of non‐Hodgkin lymphoma in 2020 Mafra, Allini; Laversanne, Mathieu; Gospodarowicz, Mary ...
International journal of cancer,
1 November 2022, 2022-11-01, 2022-11-00, 20221101, Letnik:
151, Številka:
9
Journal Article
Recenzirano
We evaluated the global patterns of non‐Hodgkin lymphoma (NHL) in 2020 using the estimates of NHL incidence and mortality in 185 countries that are part of the GLOBOCAN 2020 database, developed by ...the International Agency for Research on Cancer (IARC). As well as new cases and deaths of NHL, corresponding age‐standardized (world) rates (ASR) of incidence and mortality per 100 000 person‐years were derived by country and world region. In 2020, an estimated 544 000 new cases of NHL were diagnosed worldwide, and approximately 260 000 people died from the disease. Eastern Asia accounted for a quarter (24.9%) of all cases, followed by Northern America (15.1%) and South‐Central Asia (9.7%). Incidence rates were higher in men than in women, with similar geographical patterns. While the incidence rates were highest in Australia and New Zealand, Northern America, Northern Europe and Western Europe (>10/100 000 for both sexes combined), the highest mortality rates (>3/100 000) were found in regions in Africa, Western Asia and Oceania. The large variations and the disproportionately higher mortality in low‐ and middle‐income countries can be related to the underlying prevalence and distribution of risk factors, and to the level of access to diagnostic and treatment facilities.
What's new?
Non‐Hodgkin lymphoma (NHL) is a highly treatable, potentially curable group of malignancies. To ensure equitable access to care, particularly in low‐ and middle‐income countries (LMICs), a deeper understanding of the global burden of NHL is needed. The present analysis, drawing on GLOBOCAN estimates, shows that in 2020 alone some 544 000 new NHL cases were diagnosed and approximately 260 000 deaths from NHL occurred worldwide. Incidence was highest in Western countries, while regions of Africa, Western Asia and Oceania experienced high mortality. The observed variation in NHL burden facilitates the identification of LMIC regions in greatest need for improved access to care.
The COVID‐19 pandemic has caused disruptions to national health systems and impacted health outcomes worldwide. However, the extent to which surveillance systems, such as population‐based cancer ...registration, have been affected was not reported. Here we sought to evaluate the effect of the pandemic on registry operations across different areas and development levels worldwide. We investigated the impact of COVID‐19 on three main areas of cancer registry operations: staffing, financing and data collection. An online survey was administered to 750 member registries of the International Association for Cancer Registries. Among 212 responding registries from 90 countries, 65.6% reported a disruption in operations, ranging between 45% in south‐eastern Asia and 87% in the Latin America and Caribbean. Active data collection was disrupted more than case notifications or hybrid methods. In countries categorized with low Human Development Index (HDI), a greater number of registries reported a negative impact (81.3%) than in very high HDI countries (57.8%). This contrast was highest in term of impact on financing: 9/16 (56%) registries in low HDI countries reported a current or an expected decline in funding, compared to 7/108 (7%) in very high HDI countries. With many cancer registries worldwide reporting disruption to their operations during the early COVID‐19 pandemic, urgent actions are needed to ensure their continuity. Governmental commitment to support future registry operations as an asset to disease control, alongside a move toward electronic reporting systems will help to ensure the sustainability of cancer surveillance worldwide.
What's new?
The COVID‐19 pandemic has caused disruptions to health systems worldwide. Has it also affected surveillance systems, such as population‐based cancer registries? In this study, the authors found that two‐thirds of analyzed cancer registries reported disruption in staffing, finances, and/or data collection. In countries with a low Human Development Index (HDI), a greater number of registries reported a negative impact (81.3%) than in very high HDI countries (57.8%). These results emphasize the need for actionable, strategic plans to ensure the continuity of registry operations globally.
Summary Cancer in children and adolescents is rare and biologically very different from cancer in adults. It accounts for 1·4% of all cancers worldwide, although this proportion ranges from 0·5% in ...Europe to 4·8% in Africa, largely because of differences in age composition and life expectancy. In high-income countries, survival from childhood cancer has reached 80% through a continuous focus on the integration of clinical research into front-line care for nearly all children affected by malignant disease. However, further improvement must entail new biology-driven approaches, since optimisation of conventional treatments has in many cases reached its limits. In many instances, such approaches can only be achieved through international collaborative research, since rare cancers are being subdivided into increasingly smaller subgroups on the basis of their molecular characteristics. The long-term effect of anticancer treatment on quality of life must also be taken into account because more than one in 1000 adults in high-income countries are thought to be survivors of cancer in childhood or adolescence. The introduction of drugs that are less toxic and more targeted than those currently used necessitates a partnership between clinical and translational researchers, the pharmaceutical industry, drug regulators, and patients and their families. This therapeutic alliance will ensure that efforts are focused on the unmet clinical needs of young people with cancer. Most children with cancer live in low-income and middle-income countries, and these countries account for 94% of all deaths from cancer in people aged 0–14 years. The immediate priority for these children is to improve access to an affordable, best standard of care in each country. Every country should have a national cancer plan that recognises the unique demographic characteristics and care needs of young people with cancer. Centralisation of the complex components of treatment of these rare diseases is essential to improve survival, accelerate research, and train the future specialist workforce. Referral routes and care pathways must take account of the large geographical distances between many patients' homes and treatment centres, and the economic, cultural, and linguistic diversity of the populations served.
Survivors of childhood cancer have an increased risk of long‐term health issues arising mostly from the side effects of treatment. Using population‐based data from the Australian Childhood Cancer ...Registry (ACCR) for children aged 0–14 at diagnosis between 1983 and 2018, there were a total of 17,468 prevalent cases of childhood cancer survivors on 31 December 2018. We also found an 80% increase in the number of 5‐year prevalent cases, from 1979 in 1988 to 3566 in 2018. Both short‐ and long‐term prevalence estimates are important for monitoring childhood cancer survivorship and planning for the specific needs of this expanding cohort.
We examined the association between gestational age and risk of any primary cancer and observed whether the risk patterns differed by sex, birth weight for gestational age categories, cancer site and ...age of onset. All people live‐born in Sweden 1974 to 2013 were prospectively followed up from birth until 2016 using national registers. Gestational age was extracted from the Medical Birth Register and primary malignant cancer diagnoses were from the Swedish cancer register. The adjusted hazard ratios (aHR) for any primary cancer according to weekly gestational age and gestational age categories were determined using cox proportional hazards models adjusted for birth year and parental age. The study included 3 137 691 people; 180 363 (5.8%) born preterm and 254 790 (8.1%) born postterm. They were followed up for 71 691 112 person‐years, to a maximum of 43 years and recorded 22 604 new cancers. Although aHRs for the predefined GA categories were only increased for moderate to late preterm delivery (aHR 1.07, 95% CI 1.01‐1.14), gestational week‐specific aHRs were increased for gestational weeks 30 to 35, with greatest aHR observed for 31 weeks (aHR 1.18, 95% CI 1.05‐1.32). Increased cancer risk related to shorter gestational ages were observed particularly for women, those born small for gestational age, childhood cancers and for cancers originating at certain sites (eg, testicular and liver cancer). We provide the first evidence that those born between 30 and 35 weeks gestation may have increased risk of any primary malignant cancer up to young adulthood. Additionally, increasing gestational ages may reduce the risk of testicular and liver cancer.
What's new?
Possible links between gestational age and risk of cancer in both childhood and adulthood need to be clarified. This study of more than 3 million people up to young adulthood found that individuals born between 30 and 35 weeks of gestation may have an increased risk of developing any primary malignant cancer compared to individuals born at term. The risk was highest in females and in people born small for their gestational age. Furthermore, the risk was highest for cancers presenting in childhood or affecting certain organs like the testes and the liver.
The improvement of childhood cancer outcome is determined by early diagnosis, effective treatment, supportive care, and adequate medical follow-up. Stage at diagnosis may reflect timeliness of ...diagnosis, therefore standardized registration of stage is essential for interpretation of regional differences and time trends in survival. Here, we describe the feasibility of implementing the Toronto Childhood Cancer Stage Guidelines (hereafter Toronto Guidelines TG) in the hospital-based cancer registry of the Franco-African Pediatric Oncology Group (GFAOP), and assess the impact of TG stage on outcome in pediatric oncology units (POUs) in seven low- and middle-income countries in sub-Saharan Africa (SSA).
All cancer patients diagnosed before 15 years of age with one of the 15 cancer types defined in TG, resident in one of the participating countries, and attending one of the selected POUs in 2017-2019 were included. Stage was assigned according to TG. Patients were followed-up for vital status for at least 12 months post diagnosis. Survival at 3, 6, and 12 months was calculated using Kaplan-Meier method and compared between POUs and tumor groups using log-rank test.
TG stage was assigned to 1772 of 2446 (89%) cases diagnosed with one of 11 cancer types. It was not possible to assign TG stage to acute lymphoblastic leukemia (ALL) and the three types of the central nervous system tumors included in the TG. One-year overall survival (OS) was 58% 95% confidence interval: 55-60 and varied between POUs. Survival declined with increasing stage for four tumor types and was statistically significant for two.
Except for ALL and brain tumors, we demonstrated feasibility of TG implementation for childhood solid cancers in participating POUs in SSA, and provided a baseline assessment of childhood cancer outcomes against which future stage distribution and survival can be measured as timelines of diagnosis improve over time within the GFAOP network.
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