Publications by authors named "Usel M"

Purpose: We investigated whether the relationship between family history (FH) of breast cancer and survival of women with breast cancer is related to the quality of care received, once adjusted for other prognostic variables using data from the Geneva population-based cancer registry and quality of care indicators defined by the European Society of breast cancer specialists (EUSOMA).

Methods: We included non-metastatic malignant breast tumor patients who had their surgery between 2001 and 2010. We assessed the association between FH and patient and tumor characteristics on one hand, and each quality of care indicator and an overall score of quality of care, on the other hand, through logistic regression.

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Triple-negative breast cancer (TNBC) is associated with a poor prognosis. Surgery, radiotherapy, chemotherapy, and referral for genetic counseling are the standard of care. We assessed TNBC prevalence, management, and outcome using data from the population-based Geneva cancer registry.

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Introduction: Prognosis of colon cancer (CC) has steadily improved during the past three decades. This trend, however, may vary according to proximal (right) or distal (left) tumor location. We studied if improvement in survival was greater for left than for right CC.

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Objective: Metastatic endometrial cancer (EC) at initial presentation is a rare disease. The present aim was to evaluate prognostic factors and overall survival in patients diagnosed with metastatic EC.

Study Design: Using data from the Geneva Cancer Registry, the authors included all patients diagnosed with Stage IVB EC from 1980-2007.

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Background: Considering the low incidence of colon cancer after an initial episode of colonic diverticulitis in some categories of patients, some authors suggested to exempt them from colonoscopy. However, this incidence has never been compared to that of a reference population, and predictors of cancer are still poorly investigated. We aimed to determine the 1-year incidence of colon cancer at the site of diverticulitis in patients diagnosed with left colonic or sigmoid acute diverticulitis, to compare this incidence to a reference population to state whether endoscopy is required or not, and to identify predicting factors of cancer to better target subpopulations needing that examination.

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Background: The objective of this population-based study was to assess patient, physician and tumour determinants associated with positive surgical margins after prostatectomy, and to assess the effects of positive surgical margins on prostate cancer-specific survival.

Methods: We included 1'254 prostate cancer patients recorded at the Geneva Cancer Registry who had radical prostatectomy during 1990-2008. To assess factors associated with positive margins, we used logistic regression.

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Background: Projections of the national burden of cancer play a key role in planning cancer control programmes and investments. We present projections of cancer incidence rates and cases for the period up to 2015-2019 in Switzerland.

Methods: Projections were based on cancer incidence data estimated from cancer registries for the 1989-2009 periods and demographic projections of the Federal Statistical Office.

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Background: The prevalence of breast lesions (benign, precancerous and cancer lesions) in reduction mammaplasty (RM) specimens has rarely been reported in Europe and never in the Swiss population.

Methods: Personal and histopathological data from 534 female patients who underwent RM were reviewed.

Results: Benign and/or malignant lesions were detected in 76.

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Objective: To assess how many epithelial ovarian cancer (EOC) patients are eligible for fertility-sparing surgery (FSS) in a population-based study.

Study Design: Using data from the Geneva Cancer Registry, we conducted a retrospective review of all women diagnosed with epithelial ovarian cancer (EOC) between January 1979 and December 2008. Patients were classified into two age groups ("young group"≤45 years and "old group">45 years) and as "eligible for FSS" (FIGO IA, G1-G2 or unilateral ICG1) and "non-eligible for FSS" (FIGO IA, G3; IC G2-G3; IB or II-IV).

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Purpose: To assess breast cancer (BC) risk after Hodgkin's lymphoma (HL) and compare characteristics, risk of second BC, and prognosis of patients with these BCs with patients with first primary BC.

Patients And Methods: We considered all 9,620 women with HL recorded in the Surveillance, Epidemiology and End Results dataset in 1973-2007. We calculated age-period standardized incidence ratios of BC.

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Background: Using data from the population-based Geneva Cancer Registry we evaluated the risk of invasive cervical cancer following carcinoma in situ (CIS) or cervical intraepithelial neoplasia (CIN) III according to type of treatment.

Methods: Included in the study were all women diagnosed with CIS/CIN III in Geneva (Switzerland) between 1970 to 2002 (n=2658) and followed for invasive cervical cancer occurrence until 31st December 2008. We calculated age and period standardised incidence ratios (SIR) and multiadjusted hazard ratios (HR) of invasive cervical cancer by treatment groups.

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Population-based studies have shown a concordance of breast cancer survival among first-degree relatives (FDRs), suggesting a heritable component. Reasons for such heritability remain to be elucidated. We aimed to determine whether association of breast cancer survival among FDRs is linked to shared patient and tumor characteristics or type of treatment.

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Late malignancies have been discussed as a potential risk for growth factor mobilized donors of hematopoietic stem cells. Little is known about the incidence and potential risk factors. This single center retrospective cohort study evaluated all HLA-identical sibling pairs with hematopoietic stem cell transplantation (HSCT) for a hematological malignancy, treated from 1974 to 2001 at the University Hospital of Basel.

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Background: Radiotherapy of the left breast is associated with higher cardiovascular mortality linked to cardiotoxic effect of irradiation. Radiotherapy of inner quadrants can be associated with greater heart irradiation, but no study has evaluated the effect of inner-quadrant irradiation on cardiovascular mortality.

Patients And Methods: We identified 1245 women, the majority with breast-conserving surgery, irradiated for primary node-negative breast cancer from 1980 to 2004 registered at the Geneva Cancer Registry.

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Hormone replacement therapy (HRT) use declined sharply after mid-2002, when the Women's Health Initiative trial reported an association between breast cancer occurrence and HRT. Hypothesized mechanism behind this association is that HRT promotes growth of pre-existing small tumors, leading to earlier tumor detection. We evaluated the impact of the sudden decline in HRT use on age distribution of breast cancer in Geneva.

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In this population-based study, we evaluated the impact of obesity on presentation, diagnosis and treatment of breast cancer. Among all women diagnosed with invasive breast cancer in the canton Geneva (Switzerland) between 2003 and 2005, we identified those with information on body mass index (BMI) and categorized them into normal/underweight (BMI <25 kg/m(2)), overweight (BMI > or =-<30 kg/m(2)) and obese (BMI > or =30 kg/m(2)) women. Using multivariate logistic regression, we compared tumour, diagnosis and treatment characteristics between groups.

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Objectives: To assess the characteristics of young women with endometrial carcinoma, and evaluate those potentially eligible for conservative therapy.

Methods: We identified women diagnosed with endometrial cancer between 1970 and 2005 at the population-based Geneva Cancer Registry (n=1365). We classified patients into two age groups (< or =45 and >45 years old).

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Purpose: In the current pTNM classification system, nodal status of breast cancer is based on the number of involved lymph nodes and does not account for the total number of lymph nodes removed. In this study, we assessed the prognostic value of the lymph node ratio (LNR; ie, ratio of positive over excised lymph nodes) as compared with pN staging and determined its optimal cutoff points.

Patients And Methods: From the Geneva Cancer Registry, we identified all women diagnosed with node-positive breast cancer between 1980 and 2004 (n = 1,829).

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Objectives: Our aim was to compare the survival between patients with clear cell carcinoma (CC) and patients with endometrioid carcinoma (EC).

Methods: Through the population-based Geneva Cancer Registry, we identified 1,380 resident women diagnosed with uterine cancer between 1970 and 2000. We excluded those with papillary serous endometrial carcinoma and uterine sarcomas.

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Objectives: Several studies have demonstrated a higher risk of colorectal and breast cancers subsequent to invasive ovarian cancer. Such risk has not been investigated for ovarian borderline tumors. We aim to evaluate the risk of subsequent cancer occurrence among patients with borderline ovarian tumors in a population-based setting.

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Background: Ionizing radiation at very high (radio-therapeutic) dose levels can cause diseases other than cancer, particularly heart diseases. There is increasing evidence that doses of the order of a few sievert (Sv) may also increase the risk of non-cancer diseases. It is not known, however, whether such effects also occur following the lower doses and dose rates of public health concern.

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Radiation protection standards are based mainly on risk estimates from studies of atomic bomb survivors in Japan. The validity of extrapolations from the relatively high-dose acute exposures in this population to the low-dose, protracted or fractionated environmental and occupational exposures of primary public health concern has long been the subject of controversy. A collaborative retrospective cohort study was conducted to provide direct estimates of cancer risk after low-dose protracted exposures.

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A 15-Country collaborative cohort study was conducted to provide direct estimates of cancer risk following protracted low doses of ionizing radiation. Analyses included 407,391 nuclear industry workers monitored individually for external radiation and 5.2 million person-years of follow-up.

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Objectives: To provide direct estimates of risk of cancer after protracted low doses of ionising radiation and to strengthen the scientific basis of radiation protection standards for environmental, occupational, and medical diagnostic exposures.

Design: Multinational retrospective cohort study of cancer mortality.

Setting: Cohorts of workers in the nuclear industry in 15 countries.

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Objective: To evaluate treatment patterns of vulvar cancer in patients over 80 years.

Material And Methods: Between 1979 and 1999, the Geneva Tumor Registry identified 230 women with vulvar cancer. Treatment of patients over 80 years and younger were compared.

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