Radiation dose and subsequent risk for stomach cancer in long-term survivors of cervical cancer.

Purpose: To assess the dose-response relationship for stomach cancer after radiation therapy for cervical cancer.

Methods And Materials: We conducted a nested, matched case-control study of 201 cases and 378 controls among 53,547 5-year survivors of cervical cancer diagnosed from 1943 to 1995, from 5 international, population-based cancer registries. We estimated individual radiation doses to the site of the stomach cancer for all cases and to corresponding sites for the matched controls (overall mean stomach tumor dose, 2.

Risk of thyroid cancer in first-degree relatives of patients with non-medullary thyroid cancer by histology type and age at diagnosis: a joint study from five Nordic countries.

Background: We aimed to estimate lifetime cumulative risk of thyroid cancer (CRTC) in first-degree relatives of patients with non-medullary thyroid cancers (NMTC), including papillary (PTC)/follicular/oxyphilic/anaplastic thyroid carcinoma, by histology and age at diagnosis in patients and their relatives.

Design: A population-based cohort of 63 495 first-degree relatives of 11 206 NMTC patients diagnosed in 1955-2009 in Nordic countries was followed for cancer incidence. Standardised incidence ratios (SIRs) were calculated using histology-specific, age-specific, sex-specific, period-specific and country-specific incidence rates as reference.

Effect of various forms of postmenopausal hormone therapy on the risk of ovarian cancer--a population-based case control study from Finland.

Postmenopausal hormone therapy (HT) associates with an increased risk of ovarian cancer, but its' influence on tumor histology is not as well known. Therefore, we evaluated the effect of various types of HT on the risk of epithelial ovarian cancer by histological subtype. All Finnish women diagnosed with ovarian cancer (n = 3,958) aged over 50 during 1995-2007 were identified from the Finnish Cancer Registry.

Familial risk of small intestinal carcinoid and adenocarcinoma.

Background & Aims: Small intestinal cancer (SIC) is rare, and its etiology is poorly understood. We compared clusters of families with SICs of different histologic subtypes.

Methods: By using the nationwide family cancer data sets of Sweden and Finland, we identified a cohort of 9964 first-degree relatives of 1799 patients with SIC, diagnosed from 1961 through 2009.

Occupational exposure to trichloroethylene and perchloroethylene and the risk of lymphoma, liver, and kidney cancer in four Nordic countries.

Objectives: Trichloroethylene (TCE) and Perchloroethylene (PER) are two chlorinated solvents that are applied widely as degreasers of metal parts, and in dry cleaning and other applications. In 2012, the International Agency for Research on Cancer classified TCE as carcinogenic to humans and PER as probably carcinogenic to humans. We explored exposure-response relations for TCE and PER and non-Hodgkin's lymphoma (NHL), multiple myeloma (MM), and cancers of the kidney and liver in the Nordic Occupational Cancer cohort.

Nationwide registry-based analysis of cancer clustering detects strong familial occurrence of Kaposi sarcoma.

Many cancer predisposition syndromes are rare or have incomplete penetrance, and traditional epidemiological tools are not well suited for their detection. Here we have used an approach that employs the entire population based data in the Finnish Cancer Registry (FCR) for analyzing familial aggregation of all types of cancer, in order to find evidence for previously unrecognized cancer susceptibility conditions. We performed a systematic clustering of 878,593 patients in FCR based on family name at birth, municipality of birth, and tumor type, diagnosed between years 1952 and 2011.

Risk factors for skin cancer among Finnish airline cabin crew.

Increased incidence of skin cancers among airline cabin crew has been reported in several studies. We evaluated whether the difference in risk factor prevalence between Finnish airline cabin crew and the general population could explain the increased incidence of skin cancers among cabin crew, and the possible contribution of estimated occupational cosmic radiation exposure. A self-administered questionnaire survey on occupational, host, and ultraviolet radiation exposure factors was conducted among female cabin crew members and females presenting the general population.

High familial risk in nodular lymphocyte-predominant Hodgkin lymphoma.

Purpose: Nodular lymphocyte-predominant Hodgkin lymphoma (NLPHL) is one of the two established Hodgkin lymphoma (HL) subtypes. The risk factors of NLPHL are largely unknown. In general, genetic factors are known to have a modest effect on the risk of HL; however, familial risk in NLPHL has not been previously examined.

Understanding long-term protection of human papillomavirus vaccination against cervical carcinoma: Cancer registry-based follow-up.

Phase III clinical trials of human papilloma virus (HPV) vaccination have shown ≥95% efficacy against HPV16/18 associated cervical intraepithelial neoplasia (CIN) Grade 2/3. Long-term surveillance is, however, needed to determine the overall vaccine efficacy (VE) against CIN3 and invasive cervical carcinoma (ICC). During population-based recruitment between September 2002 and March 2003, 1,749 16- to 17-year old Finns participated in a multi-national randomized Phase III HPV6/11/16/18 vaccine (FUTURE II) trial for the determination of VE against HPV16/18 positive CIN2/3.

Occupation and leukemia in Nordic countries.

Objective: We studied occupational variation of the risk of acute myeloid leukemia, chronic lymphocytic leukemia, and other leukemia in Nordic countries.

Methods: The study cohort comprised 15 million persons older than 30 years who participated in the population censuses in 1960, 1970, 1980/1981, 1990, or all of these years in five Nordic countries. Standardized incidence ratios (SIRs) were estimated for 53 occupations and one group of economically inactive persons.

Familial risks for childhood acute lymphocytic leukaemia in Sweden and Finland: far exceeding the effects of known germline variants.

Despite recent successes in the identification of genetic susceptibility loci, no familial risk has been demonstrated for childhood acute lymphoblastic leukaemia (ALL). We identified 3994 childhood ALL cases from two cancer registries; family members were obtained from population registers. The standardized incidence ratio for familial risk in singleton siblings and twins was 3·2 (95% confidence interval 1·5-5·9) and 162·6 (70·2-320·4), respectively.

Occupational exposure to wood dust and formaldehyde and risk of nasal, nasopharyngeal, and lung cancer among Finnish men.

Controversy exists over whether or not occupational inhalation exposure to wood dust and/or formaldehyde increases risk for respiratory cancers. The objective of this study was to examine the risk of nasal, nasopharyngeal, and lung cancer in relation to occupational exposure to wood dust and formaldehyde among Finnish men. The cohort of all Finnish men born between the years 1906 and 1945 and in employment during 1970 was followed up through the Finnish Cancer Registry for cases of cancers of the nose (n = 292), nasopharynx (n = 149), and lung (n = 30,137) during the period 1971-1995.

Coffee consumption and risk of gastric and pancreatic cancer--a prospective cohort study.

Only few prospective studies have examined the association between coffee consumption and risk of gastric and pancreatic cancer. This study is designed to evaluate this relationship among Finns, whose coffee consumption is the highest in the world. A total of 60,041 Finnish men and women who were 26-74 years of age and without history of any cancer at baseline were included in the present analyses.

Risk of cancer with metal-on-metal hip replacements: population based study.

Objective: To assess the risk of cancer associated with modern primary metal-on-metal hip replacements.

Design: Population based study.

Setting: Nationwide retrospective comparative register.

Survival of Sami cancer patients.

Objectives: The incidence of cancer among the indigenous Sami people of Northern Finland is lower than among the Finnish general population. The survival of Sami cancer patients is not known, and therefore it is the object of this study.

Study Design: The cohort consisted of 2,091 Sami and 4,161 non-Sami who lived on 31 December 1978 in the two Sami municipalities of Inari and Utsjoki, which are located in Northern Finland and are 300-500 km away from the nearest central hospital.

Increased incidence of Merkel cell carcinoma among younger statin users.

Background: Statins (HMG-CoA-reductase inhibitors) are suggested to act as a predisposing factor for autoimmune diseases, have immunomodulatory effects, and possibly prevent some cancer types - the sum of these effects is unknown in cancers of viral aetiology, such as Merkel cell carcinoma (MCC). Aim of our study was to find out whether statin users in Finland have an increased incidence of MCC.

Patients And Methods: A cohort of 224715 male and 230220 female statin users during 1994-2007 was identified from the Prescription Register of the National Social Insurance Institution.

Mortality among population with exposure to industrial air pollution containing nickel and other toxic metals.

Objective: To assess disease mortality among people with exposure to metal-rich particulate air pollution.

Methods: We conducted a cohort study on mortality from 1981 to 2005 among 33,573 people living near a nickel/copper smelter in Harjavalta, Finland. Nickel concentration in soil humus was selected as an indicator for long-term exposure.

Primary fallopian tube carcinoma risk in users of postmenopausal hormone therapy in Finland.

Objective: Primary fallopian tube carcinoma (PFTC) is a rare malignancy and only sparse data exist on its possible association with postmenopausal hormone therapy (HT). We therefore studied this association in a nationwide cohort of Finnish HT users.

Methods: All women> 50 years using systemic estradiol-only therapy (ET) (n=117,820 hysterectomized women) or estradiol-progestin therapy (EPT) (n=247,781 nonhysterectomized women) for ≥ 6 months during 1994-2008 were identified from the national medical reimbursement register.

Second primary malignancies among women with uterine sarcoma.

Objective: Uterine sarcomas (US) are rare malignancies with unclear aetiology. Studies on uterine sarcomas in the setting of second primary malignant tumours can provide clues to aetiology and identify side effects of different treatments.

Methods: A cohort of 8606 cases of US was extracted from the data from 13 cancer registries and followed for second primary cancers within the period 1943-2000.

Cancer incidence among Nordic airline cabin crew.

Airline cabin crew are occupationally exposed to cosmic radiation and jet lag with potential disruption of circadian rhythms. This study assesses the influence of work-related factors in cancer incidence of cabin crew members. A cohort of 8,507 female and 1,559 male airline cabin attendants from Finland, Iceland, Norway and Sweden was followed for cancer incidence for a mean follow-up time of 23.

Cervical cancer screening in primary health care setting in Sudan: a comparative study of visual inspection with acetic acid and Pap smear.

Objective: To determine the feasibility of visual inspection with the use of acetic acid (VIA) as a screening method for cervical cancer, an alternative to the Pap smear used in primary health care setting in Sudan, and to compare sensitivity, specificity, positive and negative predictive values, and histological diagnosis of positive cases of both tests.

Methods: A cross-sectional study of 934 asymptomatic women living in Khartoum, Sudan, was conducted during 2009-2010. A semi-structured questionnaire containing socio-economic and reproductive variables was used to collect data from each participant.

Increased relative risk of lung cancer in 2,904 patients with saccular intracranial aneurysm disease in eastern Finland.

Background And Objective: To analyze the long-term incidence of cancer after the first diagnosis of saccular intracranial aneurysm (sIA) disease.

Methods: The Neurosurgery Department of the Kuopio University Hospital (KUH) solely serves a defined Eastern Finnish population. The Kuopio sIA database contains 2,904 consecutive sIA cases from 1980 to 2007, 618 unruptured (170 familial and 448 sporadic) and 2,286 ruptured aneurysmal subarachnoid hemorrhage (aSAH) cases (308 familial and 1,978 sporadic).

A nationwide cohort study on the incidence of meningioma in women using postmenopausal hormone therapy in Finland.

The authors conducted a nationwide cohort study to evaluate the association between postmenopausal hormone therapy and meningioma incidence in Finland. All women who had used hormone therapy at least for 6 months at the age of 50 years or older during 1994-2009 were included. Women who had used postmenopausal hormone therapy were identified from the medical reimbursement register of the Social Insurance Institution (131,480 estradiol users and 131,248 estradiol-progestin users), and meningioma cases were identified from the Finnish Cancer Registry.

Cancer incidence among priests: 45 years of follow-up in four Nordic countries.

Previously published studies on the risk of cancer among male priests have been based on cancer mortality with the exception of one case-control study. The aim of this study was to present estimates of cancer incidence among Nordic male priests. The study cohort for our analyses consisted of 6.

Predictors of cervical cancer being at an advanced stage at diagnosis in Sudan.

Background: Cervical cancer is the second most common cancer among women in Sudan, with more than two-thirds of all women with invasive cervical cancer being diagnosed at an advanced stage (stages III and IV). The lack of a screening program for cervical cancer in Sudan may contribute to the late presentation of this cancer, but other factors potentially associated with advanced stages of cervical cancer at diagnosis are unknown. The purpose of this research was to investigate the relationship between age, marital status, ethnicity, health insurance coverage, residence in an urban vs a rural setting, and stage (at diagnosis) of cervical cancer in Sudan.