Occupational exposure to electromagnetic fields and breast cancer in men

Data from a population-based case-control study of breast cancer in men were used to examine the hypothesis that occupational exposure to electromagnetic fields increases the risk of breast cancer. Incident cases (n = 227) diagnosed between 1983 and 1987 were obtained from 10 population-based cancer registries of the Surveillance, Epidemiology, and End Results program of the National Cancer Institute. Controls (n = 300) were selected by random digit dialing and from Medicare eligibility lists. Exposure status, defined as ever having been employed in a job which has been classified as involving potential exposure to electromagnetic fields, was assigned without knowledge of case/control status. An elevated risk was found for any job with exposure (odds ratio (OR) = 1.8, 95 percent confidence interval (CI) 1.0-3.7), and risk was highest among electricians, telephone linemen, and electric power workers (OR = 6.0, 95 percent CI 1.7-21) and radio and communications workers (OR = 2.9, 95 percent CI 0.8-10). Risk did not vary with duration of exposed employment. The risk was highest among subjects who were first employed in jobs with exposure before the age of 30 years and who were initially exposed at least 30 years prior to diagnosis. These results lend support to the theory that electromagnetic fields may be related to breast cancer in men. The hypothesis warrants evaluation in women.     

The use of the Internet by women with breast cancer and men with prostate cancer-results of online research

Introduction Patients are increasingly searching the Internet for information on health-related topics. Research design We examined the use of the Internet by women with breast cancer and men with prostate cancer with an online questionnaire. On the basis of 563 respondents, the ways, the scope, and the targets of the reported Internet search were analyzed, as well as the related expectations and experiences of the users. A special focus was laid on the question of how Internet information influences the illness-related decision-making processes and the doctor-patient relationship. Results While trust in physicans and their medical authority is not being fundamentally questioned, patients are increasingly confronting their doctors with high expectations concerning transparent information, openness, and willingness to shared decision-making; they want to know the doctors’ opinions on various possibilities of treatment, and they expect serious comment on their findings in the Net.     

乳腺癌合并副乳腺癌诊治探讨

目的 探讨乳腺癌合并副乳腺癌的诊治.方法 2007-2010年收治5例副乳腺癌,其中1例合并乳腺癌,对其临床资料进行综合分析.结果 行乳腺癌改良根治术1例,行副乳腺扩大切除术+腋窝淋巴结清扫术4例.术后均给予化疗及放疗,1例行内分泌治疗.4例随访2年,均未发现复发及转移,1例现正在行术后CAP方案序贯化疗.结论 副乳腺癌是一种罕见且预后较差的恶性肿瘤.诊断主要依靠影像学检查和术后病理.应遵循以手术为主的综合治疗原则,术后辅助治疗有可能改善患者的生存期.     

Communication with breast cancer survivors

Breast cancer survivors must manage chronic side effects of original treatment. To manage these symptoms, communication must include both biomedical and contextual lifestyle factors. Sixty breast cancer survivors and 6 providers were recruited to test a conceptual model developed from uncertainty in illness theory and the dimensions of a patient-centered relationship. Visits were audio-taped, then coded using the Measure of Patient-Centered Communication (Brown, Stewart, & Ryan, 2001). Consultations were found to be 52% patient-centered. Chi-square Automatic Interaction Detection (CHAID) analysis showed that survivor self-reported fatigue level and conversation about symptoms were associated with survivor uncertainty, mood state, and survivor perception of patient-centered communication. Survivors may want to discuss persistent symptom concerns with providers, due to concerns about recurrence, and discuss lifestyle contextual concerns with others.     

Risk of contralateral breast cancer: associations with factors related to initial breast cancer

A case-control study was conducted to assess the risk factors associated with the development of a contralateral primary breast cancer among women who had had a first primary breast cancer. Hospital records were reviewed for 292 women who had an incident contralateral breast cancer, diagnosed in one of eight Connecticut hospitals between July 1, 1975 and December 31, 1983, and for a comparison group of 264 surviving unilateral breast cancer patients previously diagnosed in the same hospitals. All subjects were identified through the records of the Connecticut Tumor Registry. A family history of breast cancer in any first- or second-degree relative was associated with an almost threefold increased risk of developing a contralateral cancer (adjusted odds ratio (OR) = 2.8, 95% confidence interval (CI) = 1.6-4.9). Further, this relation was modified by the time elapsed since the initial cancer diagnosis (ratio of OR = 1.9, 95% CI = 1.2-3.0 for a five-year differential in time since initial diagnosis). A delay of 10 years in first full-term pregnancy was associated with a 36% decrease in risk (adjusted OR = 0.6, 95% CI = 0.3-1.2); this estimate excluded the magnitude of increased risk usually observed in studies of initial breast cancer. A conceptual framework is presented for assessing the study findings in the context of previous studies that have examined the corresponding associations for initial primary breast cancers.     

The role of humor for men with testicular cancer

In this article, the authors examine how 45 men talked about "pure" and "applied" humor in qualitative interviews about their experience of testicular cancer. Most described using applied humor in work and social settings to challenge assumptions about the disease, and in health settings to manage feelings, hide embarrassment, reduce tension, share a sense of solidarity with others, or encourage others to examine themselves. Men also described their usually positive reaction to jokes made by others; jokes helped to dispel tension and reassured men that they were being treated as normal. In a few accounts, men revealed how humor was hurtful. They were sometimes upset about jokes made by others, or by the idea of jokes being made, fearing humiliation and stigma. Humor might ease difficult interactions, but our results suggest that clinicians and others should be careful not to initiate humor without a clear lead from the patient.     

Possible heterogeneity in the segregation pattern of breast cancer in families with bilateral breast cancer

We investigated the segregation pattern of breast cancer in families with bilateral breast cancer, classifying families with respect to menopausal status (premenopausal versus postmenopausal) and the interval between diagnosis of the two primary tumors in the probands. Probands were "synchronous" if both primaries were diagnosed within 1 year; "asynchronous" if the interval was at least 2 years. Results for four complex segregation analyses are here presented; the findings support heterogeneity in the transmission of breast cancer. In the asynchronous premenopausal-cases-only analysis, a dominant Mendelian gene can explain the breast cancer pattern. A recessive gene is sufficient to describe the breast cancer distribution in the synchronous premenopausal-cases-only analysis. The synchronous all-cases and the asynchronous all-cases analyses add postmenopausal cases of breast cancer to the premenopausal ones, considering any case to be affected. In the asynchronous all-cases analysis, neither the single-locus model nor the mixed model (that is, a major locus plus other factors, genetic and/or cultural) without generation differences in heritability can be rejected by the unrestricted mixed model with generation differences in heritability. For the synchronous all-cases analysis, a mixed model with generation differences in heritability is necessary to explain the breast cancer transmission. Potential sources of error and possible interpretations are discussed.     

Hip fractures in women with breast cancer

The authors investigated whether the incidence of first hip fracture, an indicator of osteoporosis, is lower in breast cancer patients, who are assumed to have higher levels of endogenous estrogens, than in other women. A population-based Swedish cohort comprising 9,673 women with invasive breast cancer diagnosed from 1958 through 1983 was followed up with respect to the occurrence of a first hip fracture during the period 1965-1983. Overall, the number of observed acute fractures (n = 387) was slightly higher than expected (n = 348.6) (standardized incidence ratio (SIR) = 1.1, 95% confidence interval (CI) 1.0-1.2). Risk for trochanteric fractures was slightly higher than expected (SIR = 1.2, 95% CI 1.0-1.4), but risk for cervical fractures was not (SIR = 1.0, 95% CI 0.9-1.1). Risk for trochanteric fracture decreased with increasing age at breast cancer diagnosis, reaching standardized incidence ratios close to unity after the age of 70 years. Duration of follow-up appeared to be unrelated to the risk of either type of fracture. The authors conclude that the incidence of first hip fracture is not lower in breast cancer patients than in other women.