The Role of Oral Contraceptive Pills on Increased Risk of Breast Cancer in Iranian Populations: A Meta-analysis

A Global Regional Comparison of the Risk of Breast Cancer in Woman Using Oral Contraceptives-Systematic Review and Meta-Analysis

Background: Incidence of breast cancer (BrCa) may be correlated with country development, with a rise in cases anticipated in regions of the world that are currently undergoing an economic transformation. Herein, differences with regard to the occurrence of breast cancer between individual countries may depend on the distribution of risk factors, the level of early detection, also ethnicity and race, as well as clinical characteristics. The aim of our study was to identify and then investigate observational studies in which the risk of breast cancer was associated with the use of oral hormonal contraceptives (OCs), with particular emphasis on geographic region, and to conduct a systematic review and meta-analysis of the obtained data. Methods: RR (relative risk) was calculated and displayed in forest plots for visual interpretation. Accordingly, 74 studies involving a total of 198,579 women were eligible for inclusion in the meta-analysis. This is the first meta-analysis to comprehensively summarize the evidence between OC use and BrCa risk in connection with geographical region. Results: The cumulative results of the meta-analysis for specific parts of the world are: Africa (RR = 1.16, p = 0.216) and the Americas (RR = 1.03, p = 0.597); Asia (RR = 1.29, p = 0.014); European countries (RR = 1.01, p = 0.904); and Middle East countries (RR = 1.29, p = 0.043). Subgroup analyses showed an increased risk of BrCa for the analyzed variables that depended upon the geographical region. Conclusions: Our meta-analysis suggests that OC use may be associated with a higher BrCa risk, although a statistically significant association was not found for all geographical regions of the world.

Network meta-analysis evaluating the impact of diverse exercise regimens on quality of life in women post-breast cancer surgery

BACKGROUND

This study used network meta-analysis to compare the effects of various exercise interventions, with the aim of identifying the most effective intervention measures.

METHODS

Data were extracted from 8 databases, comprising of PubMed, Web of Science, EBSCO, and Embase. The Cochrane risk of bias assessment tool was used to assess the quality of the research. Network meta-analysis and meta-analysis were performed using STATA15.0 and Review Manager 5.4, respectively.

RESULTS

This analysis incorporated 58 research papers that had 4998 participants, of which 2480 were assigned to the test group and 2518 to the control group. As revealed by the data, the following is a descending order of the impact of various exercise regimens on the quality of life (QoL) of women who have undergone breast cancer surgery: For the MOS item short form health survey, the recommended sequence was as follows: aerobic + resistance exercise, football, baduanjin, walking, tai chi, yoga, resistance exercise, slow-moving qigong, aerobic exercise, and usual care; for functional assessment of cancer therapy for breast cancer, the sequence was as follows: aerobic + resistance exercise, resistance exercise, relaxation, baduanjin, square dance, aerobic exercise, tai chi, yoga, Pilates, mixer dance, aquatic sports, cycle ergometer, and usual care; and for European Organization for Research and Treatment of Cancer quality of life questionnaire, the sequence was aerobic + resistance exercise, aerobic + yoga, aerobic exercise, Pilates, yoga, muscle strengthening, resistance exercise, square dance, usual care, walking, and aerobic + edema massage.

CONCLUSION

The majority of exercise interventions demonstrated a discernible impact on the QoL in women following breast cancer surgery. The effects of diverse exercise interventions on the 3 QoL outcome indicators in patients with breast cancer exhibited variability. However, irrespective of the QoL measurement technique used, aerobic and resistance exercise continue to be the most favorable choices.

A comprehensive study of adverse effects of chemotherapy on female breast cancer patients in NORI Cancer Hospital, Islamabad in a developing country

INTRODUCTION

Breast cancer is one of the top three malignancies worldwide. While radiotherapy, hormone replacement therapys, and chemotherapy are treatments, chemotherapy causes adverse effects that hinder daily life activities.

OBJECTIVES

To assess the prevalence, severity, and association of symptomatic toxicities in female breast cancer patients affecting various organ systems post systemic chemotherapy (adjuvant and neoadjuvant), and their impact on daily activities. Additionally, to determine the severity of adverse effects in specific age groups and their association with family history and disease stage.

METHODOLOGY

An observational study was conducted on 253 female breast cancer patients receiving chemotherapy at NORI Cancer Hospital from May to October 2023. Data collection tools included the NCI-PRO-CTCAE standardized questionnaire and patient medical records. Analysis was performed using descriptive statistics, T-tests, and Chi-square tests.

RESULTS

Among the 253 patients, 41.4% were aged 41-50. Significant weight changes (p = 0.034) were observed with more than three chemotherapy cycles. Notable associations included increased chemotherapy cycles with gastrointestinal (mouth/throat sores p = 0.031, vomiting p = 0.021), respiratory (cough p = 0.04), cardiovascular (arm/leg swelling p = 0.007, palpitations p = 0.052), integumentary (hair loss p = 0.000, skin dryness p = 0.054), and musculoskeletal (fatigue p = 0.002) adverse effects. Positive family history and the 18-30 age group also showed significant associations with adverse effect severity. Disease stage significantly influenced the nervous system (stage 2 p = 0.007, stage 3 p = 0.01).

CONCLUSION

The severity of adverse effects varies among age groups, depending on disease stage, genetics, and treatment duration. These patient-reported outcomes highlight the need for better management strategies considering prognostic factors and treatment adverse effects.

Practice, confidence and continuity of breast self-examination among women in Thailand during COVID-19 pandemic: a cross-sectional study

OBJECTIVE

Breast self-examination (BSE) is the most feasible screening tool compared with clinical breast examination and mammography. It is crucial to address the associated factors of practising BSE to develop a targeted BSE promotion programme and improve the BSE quality in Thai women, particularly during the COVID-19 pandemic.

DESIGN AND SETTING

We conducted a cross-sectional study in Thailand's north and northeast region from March 2020 to November 2022.

PARTICIPANTS

This study involved 405 women aged 30-70 years old.

VARIABLES AND OUTCOMES

Demographic information, health status and BSE were collected using a modified questionnaire based on the Champion Health Belief Model. The outcomes were ever-practising BSE, BSE practice within the last 6 months, continuity of BSE and confidence in doing BSE. Logistic regression and decision tree analysis identified the associated factors.

RESULTS

75.55% of participants ever performed BSE. Around 74.18% did BSE within the last 6 months. Diploma graduates (adjusted OR (aOR) 25.48, 95% CI 2.04 to 318.07), 21-40 reproductive years (aOR 4.29, 95% CI 1.22 to 15.08), ever pregnant (aOR 3.31, 95% CI 1.05 to 10.49), not drinking alcohol (aOR 2.1, 95% CI 1.04 to 4.55), not receiving hormone replacement (aOR 5.51, 95% CI 2.04 to 14.89), higher knowledge (aOR 1.29, 95% CI 1.09 to 1.52), attitude (aOR 1.15, 95% CI 1.05 to 1.26) and practice/cues of action towards BSE were associated with ever-practising BSE. Frequent high-fat diet, high awareness of breast cancer, lower knowledge of BSE and lower attitude toward BSE were associated with not practising BSE within 6 months and BSE discontinuation. Only high knowledge of BSE was associated with absolute confidence in BSE (p<0.05).

CONCLUSION

Despite having a higher percentage than other studies in different countries prior to the pandemic, it is still crucial to improve knowledge of BSE to encourage BSE practice, confidence and continuity of BSE in Thai women. Moreover, the BSE campaign should target women with prolonged exposure to oestrogen and sedentary lifestyle.

Global trends of cancer: The role of diet, lifestyle, and environmental factors

Effective treatment of cancer requires understanding the nature of the disease and accurately addressing the main root causes. General risk factors for cancer include poor nutrition, an acidogenic diet, an unhealthy lifestyle, and exposure to carcinogens such as toxins, chemicals, and radiation. The risk of developing cancers may be reduced by sufficient oxygenation and maintaining optimal alkalinity and nutritional balance at the cell level. The review paper summarizes some diet and lifestyle modifications that may potentially be considered for preventing and controlling some cancers. Moreover, worldwide statistical data for cancer incidence rates published by International Agency for Research on Cancer are analyzed for certain cancers regionally, concerning the effect of dietary habits and environmental factors that meaningfully correlate with the global trends of cancer. The study of cancer root causes integrated with analyzing the statistics related to cancer incidence rates suggests that the risk of developing cancer may be reduced by modifying dietary habits and lifestyle factors, as well as reducing exposure to carcinogens. Those with healthy balanced dietary habits may have a lower cancer risk than those who frequently have unhealthy diets; hence, considering a balanced natural diet and healthy lifestyle may be suggested as a complementary or alternative solution in cancer treatments.

Hesperetin effect on MLH1 and MSH2 expression on breast cancer cells BT-549

Due to its genetic and phenotypic heterogeneity, breast cancer is very difficult to eliminate. The harmful consequences of conventional therapies like radiation and chemotherapy have prompted the search for organic-based alternatives. Hesperetin (HSP), a flavonoid, has been discovered to possess the ability to hinder the proliferation of cell associated with breast cancer by acting as an epigenetic agent and modifying gene expression. In this investigation, breast cancer cells (BT-549) and normal cells (MCF-10a) were subjected to the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide) test and three different doses (200, 400, and 600 μM/mL) of HSP for real-time polymerase chain reaction and flow cytometry to examine its cytotoxic and anti-malignant potential. HSP was shown to be cytotoxic to both normal and breast cancer cells, but had a more pronounced effect on the cancer cell lines. After 48 h of treatment, the half-maximal inhibitory concentration (IC50) for BT-549 was 279.2 μM/mL, whereas the IC50 for MCF-10a was 855.4 μM/mL. At high HSP concentrations, upregulation of the MLH1 and MSH2 genes was observed in both cell lines. The influence of HSP on MLH1 gene expression was concentration dependent. Moreover, HSP had a concentration-dependent effect on MSH2 gene expression in the BT-549 cell line but not in the MCF-10a cell line. Cell death and early apoptosis were shown to be concentration dependent upon the application of HSP, as determined by flow cytometric analysis. HSP's capacity to cause apoptosis and its stronger impact on the malignant cell line when analyzed with the normal cell line imply that it might be useful as an effective therapeutic approach for combating breast cancer.

Intermammary breast cancer: A rare case of cancer with origin of breast cells in an unusual location

The most common type of cancer among the female population is breast cancer. The most common site for the occurrence of breast cancer is the upper outer quadrant; the upper inner quadrant is the second site, and both the lower outer and the lower inner quadrants are in the third place. This problem is rarely seen in the central portion. Intermammary metastasis due to breast cancer is an infrequent finding. This article presents a 62-year-old lady who presented to the surgical ward with intermammary swelling that appeared suddenly 3 months ago. Ultrasound examination showed a hypoechoic micro-lobulated mass with internal vascularity on the chest wall. Although core needle biopsy suspected invasive ductal carcinoma, both right and left axillary lymph nodes were normal and free. The patient was consulted by an oncologist who recommended radiotherapy before surgery and chemotherapy before and after surgery. This study aims to report and discuss a rare case of intermammary cancer with the origin of breast cells without breast and axillary lymph node involvement. Although the intermammary region is an extremely rare location where breast cancer could occur, its management strategy is the same as other breast cancers.

Knowledge and perception of breast cancer among women of reproductive age in Chattogram, Bangladesh: A cross-sectional survey

Background and Aims

Breast cancer is the second leading cause of cancer death in women worldwide. The significantly higher mortality rate has been considered due to poor knowledge of women, delay in diagnosis, and initiation of treatment. Therefore, this hospital-based cross-sectional study aimed to understand the knowledge and perception of women with breast cancer in Bangladesh.

Methods

Data was collected using a questionnaire-based interview from 357 women aged 15-49 years attending two tertiary care hospitals in Chattogram city of Bangladesh.

Results

Neighbors (18.6%) and relatives (18.1%) were the leading sources of information on breast cancer. Among the total, 69.5% knew about breast cancer however, only 14% of them knew about screening tests and 61.5% were unaware of risk factors for developing breast cancer. Pain in the breast, painless lump, and nipple discharge were the most recognized clinical symptoms by the participants. Exercise and weight control, the practice of breastfeeding, and taking medicine were the three most known prevention practices. Women perceived wrong conceptions that Breast cancer is only found in older age (42.3%) and women (15.7%) and that it causes losing one's breast (3.1%). A significant correlation was found between the education level of participants and their knowledge of risk factors related to breast cancer.

Conclusion

Although the majority of the participants have heard about breast cancer, they do not possess enough knowledge regarding the risk factor, symptoms, and preventive methods of breast cancer. We suggest interventions targeting a community-based awareness program.

Determinants of mammography screening in Iranian women: A systematic review and meta-analysis

BACKGROUND

Mammography is the most effective method for early detection of breast cancer (BC), however, it has performed in low-level. The aim of this study was to investigate the determinants of mammography in Iran.

METHODS

This study was a systematic review which was performed based on articles published in both Persian and English languages among Iranian patients in the period of 2000 to 2020 by using keywords of "Iran and mammography". Papers were selected from national databases including (SID, Magiran) and international database including (Scopus, PubMed and web of science), finally related articles to mammography were reviewed.

RESULTS

Findings indicated that 35-50% of breast cancer can be detected in the early stages by mammography, however, it is in low rate of performance among Iranian women. Age, age of menarche, occupation, family history, marital status, family support, number of pregnancies, physician recommendations, perceived sensibility and severity, self-efficacy and perceived benefits are the most important predictors of performing mammography in Iran.

CONCLUSION

Due to the growing trend of breast cancer cases in the country and low mammography rates in Iranian population, high risk groups such as women with BC family history, low income level, low education level, older age and people with history of breast complications were more emphasized for performing mammography through health centers. Therefore, appropriate planning to reduce the barriers of mammography could be helpful.

Global footprints of organochlorine pesticides: a pan-global survey

Organochlorine pesticides (OCPs) are ubiquitous environmental contaminants widely used all over the world. These chlorinated hydrocarbons are toxic and often cause detrimental health effects because of their long shelf life and bioaccumulation in the adipose tissues of primates. OCP exposure to humans occurs through skin, inhalation and contaminated foods including milk and dairy products, whereas developing fetus and neonates are exposed through placental transfer and lactation, respectively. In 1960s, OCPs were banned in most developed countries, but because they are cheap and easily available, they are still widely used in most third world countries. The overuse or misuse of OCPs has been rising continuously which pose threats to environmental and human health. This review reports the comparative occurrence of OCPs in human and bovine milk samples around the globe and portrays the negative impacts encountered through the long history of OCP use.

The use of oral contraceptive is inversely associated with the risk of type 2 diabetes mellitus among middle-aged women

OBJECTIVE

To assess the cross-sectional association between oral contraceptive (OC) use and type 2 diabetes mellitus (T2DM) risk among US women.

METHODS

The data was obtained from the National Health and Nutrition Examination Survey (NHANES 2007-2018). OC use was assessed by questionnaires and the diagnosis of T2DM was confirmed by the glycosylated hemoglobin, fasting blood glucose, and self-report. Binary logistic regression models and the restricted cubic spline model were adopted to evaluate whether OC use was associated with T2DM.

RESULTS

Compared with non-users, the odds ratio (OR) with 95% confidence interval (CI) of T2DM risk for the OC users was 0.71 (0.57-0.89) in unadjusted Model. The association remained significant in fully adjusted models, and the OR with 95%CI was 0.78 (0.62-0.99). In the stratified analyses, there was an inverse association of OC use with T2DM risk when women were overweight. Dose-response analysis also revealed an inversely nonlinear relationship between the duration of OC use and T2DM (p-value for linearity = .589).

CONCLUSIONS

Our findings suggested that OC use may be inversely associated with T2DM risk.

Endocrine disrupting chemicals and breast cancer: a systematic review of epidemiological studies

BACKGROUND

Endocrine-disrupting compounds (EDCs) are ubiquitous substances that are found in our everyday lives, including pesticides, plasticizers, pharmaceutical agents, personal care products, and also in food products and food packaging. Increasing epidemiological evidence suggest that EDCs may affect the development or progression of breast cancer and consequently lead to lifelong harmful health consequences, especially when exposure occurs during early life in humans. Yet so far no appraisal of the available evidence has been conducted on this topic.

OBJECTIVE

To systematically review all the available epidemiological studies about the association of the levels of environmental exposures of EDCs with breast cancer risk.

METHODS

The search was performed in accordance with the PRISMA guidelines. We retrieved articles from PubMed (MEDLINE) until 10 March 2021. The key words used in this research were: "Endocrine disruptor(s)" OR "Endocrine disrupting chemical(s)" OR any of the EDCs mentioned below AND "Breast cancer" to locate all relevant articles published. We included only cohort studies and case-control studies. All relevant articles were accessed in full text and were evaluated and summarized in tables.

RESULTS

We identified 131 studies that met the search criteria and were included in this systematic review. EDCs reviewed herein included pesticides (e.g. p,p'-dichlorodiphenyltrichloroethane (DDT), p,p'-dichlorodiphenyldichloroethylene (DDE), atrazine, 2,3,7,8-tetrachloridibenzo-p-dioxin (TCDD or dioxin)), synthetic chemicals (e.g. bisphenol A (BPA), phthalates, per- and polyfluoroalkyl substances (PFAS), parabens, polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), contraceptive pills), phytoestrogens (e.g. genistein, resveratrol), and certain mycotoxins (e.g. zearalenone). Most studies assessed environmental EDCs exposure via biomarker measurements.

CONCLUSION

We identified certain EDC exposures could potentially elevate the risk of breast cancer. As majority of EDCs are highly persistent in the environment and bio-accumulative, it is essential to assess the long-term impacts of EDC exposures, especially multi-generational and transgenerational. Also, since food is often a major route of exposure to EDCs, well-designed exposure assessments of potential EDCs in food and food packing are necessary and their potential link to breast cancer development need to be carefully evaluated for subsequent EDC policy making and regulations.

Dancing With Health: Quality of Life and Physical Improvements From an EU Collaborative Dance Programme With Women Following Breast Cancer Treatment

Background: Women's health has received renewed attention in the last few years including health rehabilitation options for women affected by breast cancer. Dancing has often been regarded as one attractive option for supporting women's well-being and health, but research with women recovering from breast cancer is still in its infancy. Dancing with Health is multi-site pilot study that aimed to evaluate a dance programme for women in recovery from breast cancer across five European countries.

Methods: A standardized 32 h dance protocol introduced a range of Latin American dances presented within a sports and exercise framework with influences from dance movement therapy. Fifty-four women (M age 53.51; SD 7.99) participated in the study who had a breast cancer diagnosis <3 years, chemotherapy >6 weeks, no indication of metastasis, or scheduled surgery/chemotherapy/radiation treatment for the duration of the intervention. Primary outcome data was collected for anthropometric and fitness measures next to cancer-related quality of life. T-tests and Wilcoxon signed ranked tests were used to establish differences pre and post intervention. Cohen's d was also calculated to determine the effect size of the intervention.

Results: Statistically significant changes were found for: (i) weight, right and left forearm circumference and hip; (ii) 6 min walking, right and left handgrip, sit-to-stand and sit-and-reach; (iii) the EORTC-QLQ C30 summary score as well as the subscales of emotional and social functioning and symptoms. In all cases the direction of change was positive, while Cohen's d calculated showed that the effect of the intervention for these parameters ranged from intermediate to large.

Conclusion: Changes on the above anthropometric, fitness and quality of life measures suggest that the intervention was of value to the participating women recovering from breast cancer. Results also advocate collaborative efforts across countries to further research.

Effect of age at first use of oral contraceptives on breast cancer risk: An updated meta-analysis

BACKGROUND

We evaluated the relationship between the age at first use of oral contraceptives (OC) and breast cancer (BC) risk.

METHODS

We searched PubMed, Embase, and related reviews published through June 28, 2018, and used summary relative risk (RR) and 95% confidence intervals (CIs) to evaluate the cancer risks, and fixed-effects dose-response meta-analysis to assess potential linear and non-linear dose-response relationships.

RESULTS

We included 10 studies, with 8585 BC cases among 686,305 participants. The pooled RR for BC was 1.24 (95% CI: 1.10-1.41), with moderate heterogeneities (I = 66.5%, P < .001). No significant publication bias was found (P = .584 for Begg test, P = .597 for Egger test). A linear dose-response relationship between the age at first OC use and BC risk was detected (P = .518 for non-linearity). Subgroup analyses were restricted to studies done by BC subtypes, region, sample size, follow-up time and study quality. Inconsistent consequences with no statistical significance were explored when limited to studies from Western countries, study quality <7, sample size <10,000, follow-up time <5 years, and BC subtypes defined by estrogen receptor (ER), progesterone receptor (PR) and human epidermal growth factor receptor-2 (HER-2) expression status in tumor tissue. Sensitivity analyses indicated that our results were stable and reliable after removing each study in turn and omitting studies of adjusted unreported variables.

CONCLUSION

A significant linear relationship between the age at first OC use and BC risk was confirmed. No further consistent differences are noted in multiple aspects of BC subtypes defined by progesterone or ER status.

Breast cancer: Lesser-known facets and hypotheses

Breast cancer is the most common cancer in females. The deteriorating environment, and lifestyle flaws are raising the frequency of this cancer. Existing therapies are not universally-effective, and they cause side effects, relapses, and high mortality rate. Alternative medications may be milder, but are less effective or are inadequate for a complex disease like the breast cancer. So, it requires the understanding that drugs are not the solution of this cancer, but prevention is the sustainable solution. In the past decades, an enormous quantum of insights on this disease has been obtained. A lifestyle based on the template of estrogenic compounds and, the resultant endocrine disruption, and acidosis, is elevating aromatase level, promoting the deleterious forms of estrogen, and inducing epithelial proliferation. This review provids a holistic account of breast cancer as a inflammatory endocrinopathy, and how it can be curbed by discipline, and awareness.

Risk Factors and Preventions of Breast Cancer

Breast cancer is the second leading cause of cancer deaths among women. The development of breast cancer is a multi-step process involving multiple cell types, and its prevention remains challenging in the world. Early diagnosis of breast cancer is one of the best approaches to prevent this disease. In some developed countries, the 5-year relative survival rate of breast cancer patients is above 80% due to early prevention. In the recent decade, great progress has been made in the understanding of breast cancer as well as in the development of preventative methods. The pathogenesis and tumor drug-resistant mechanisms are revealed by discovering breast cancer stem cells, and many genes are found related to breast cancer. Currently, people have more drug options for the chemoprevention of breast cancer, while biological prevention has been recently developed to improve patients' quality of life. In this review, we will summarize key studies of pathogenesis, related genes, risk factors and preventative methods on breast cancer over the past years. These findings represent a small step in the long fight against breast cancer.

Endocrine disorders and hormonal therapy for adolescent acne

PURPOSE OF REVIEW

Acne vulgaris is a global disease with increasing prevalence in adolescents. It has a profound impact on their quality of life, especially when endocrine disorders are also involved. Recent concerns regarding antibiotic stewardship, failures with antibiotic usage, and the development of antibiotic-resistant Propionibacterium acnes have led clinicians to consider other therapeutic options for acne treatment. The present review explores hormonal therapies for the treatment of acne vulgaris.

RECENT FINDINGS

There are now four different combined oral contraceptive pills that are FDA approved for the treatment of acne since its first introduction in 1960. Recent literature has provided more information on the efficacy of different generations of combined oral contraceptive pills, their side-effects, and cancer risks. Furthermore, spironolactone has been gaining wider use among dermatologists in adolescents with endocrine dysfunction. New diagnostic guidelines and treatment recommendations have also been suggested.

SUMMARY

Hormonal therapies are effective and well tolerated options for the treatment of acne vulgaris in adolescents with and without endocrine disorders. They can be used as monotherapy or in conjunction with benzoyl peroxide, topical retinoic acid, or antibiotics.

Genomic Profiling of Chronic Myelogenous Leukemia: Basic and Clinical Approach

Chronic myeloid leukemia (CML) is a hematological stem cell cancer driven by BCR-ABL1 fusion protein. We review the previous and recent evidence on the significance of CML in diagnostic and clinic management. The technical monitoring of BCR-ABL1 with quantitative real time-PCR has been used in assessing patient outcome. The cytogenetic mark of CML is Philadelphia chromosome, that is formed by reciprocal chromosomal translocations between human chromosome 9 and 22, t(9:22) (q³⁴:q¹¹). It makes a BCR-ABL1 fusion protein with an anomaly tyrosine kinase activity that promotes the characteristic proliferation of progenitor cells in CML and acute lymphoblastic lymphoma. The targeting of BCR-ABL1 fusion kinase is the first novel paradigm of molecularly targeted curing.

Relationship between Breast Cancer and Oral Contraceptive Use among Thai Premenopausal Women: a Case-Control Study

Background:

Breast cancer (BC) is an important issue both in medicine and public health as it is the leading malignancy with high incidence and mortality among women worldwide. The objective of this research was to determine the associations of BC with oral contraceptive (OC) use among Thai premenopausal women (TPW).

Materials and Methods:

A case-control study was conducted among TPW attending the National Cancer Institute, with 257 cases and 257 controls in 2013-2014. Cases and controls were matched by age (± 5 years), residential area and duration of attendance. Data were collected with a questionnaire that comprised 2 sections: part 1 socio-demographic characteristics, and part 2 health risk behavior and reproductive factors. The obtained data were analyzed using descriptive and analytic statistics with a computerized statistical package.

Results:

The study participants were mainly 40-44 years old (60 %) with an average age of 39 years. The major BC type was invasive ductal carcinoma (91.8%). Multiple unconditional logistic regression analysis, controlling for possible confounding factors, revealed that TPW with OC use increased the risk of BC by a factor of over 3 times (ORadj=3.39, 95%CI =1.99-5.75). In addition, the greater the duration of OC, the greater the risk (ORadj 6-10 yrs=3.91, 95%CI = 1.99-7.64, ORadj >10 yrs=4.23, 95%CI = 2.05-8.71).

Conclusions:

From our findings, a surveillance system of cancer risk with OC use should be conducted, accompanied by an exercise promotion campaign among risk groups, providing information and counseling for physical exercise and physical activities, weight control and basic adjustment for a healthy lifestyle to reduce BC.

Comparison of Direct and Indirect Methods of Teaching Breast Self-Examination – Influence on Knowledge and Attitudes of Iranian Nursing and Midwifery Personnel

Background:

Breast cancer is the most common cancer in women. Monthly breast self-examination (BSE) has been presented as one of the best screening methods available. The aim of this study was to compare effects of both direct and indirect methods of teaching of BSE on knowledge and attitudes of nursing and midwifery personnel.

Materials and Methods:

The present study was performed on 89 nursing and midwifery personnel in Valiasr hospital of Borujen city. Participants were randomly divided into a direct and an indirect training group. Researcher-designed BSE knowledge and attitude and demographic information questionnaires were used for data collection.

Results:

Before the education intervention, the mean levels of knowledge and attitude were 9.82±2.79 and 56.5±6.21 in the direct training group and 9.59±2.71 and 54.5±4.51 in the indirect training group; after the intervention, they reached 19.2±0.96 and 62.9±4.21, and 11.0±2.58 and 59.0±3.44, respectively. The difference in the mean levels of knowledge and attitude were significantly higher in the direct training group post intervention (P<0.05).

Conclusion:

It appears that educational planners and hospital personnel education officials should seek to teach aspects of crucial health behavior to female personnel using cooperative and direct training methods.