The latest medical research on Breast

The research magnet gathers the latest research from around the web, based on your specialty area. Below you will find a sample of some of the most recent articles from reputable medical journals about breast gathered by our medical AI research bot.

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Practical Guidance on the Use of Vaginal Laser Therapy: Focus on Genitourinary Syndrome and Other Symptoms.

International Journal of Epidemiology

Genitourinary syndrome of the menopause (GSM) is a chronic, often progressive condition, characterised by symptoms relating to oestrogen deficiency...

Real-world incidence of and risk factors for abemaciclib-induced interstitial lung disease in Japan: a nested case-control study of abemaciclib-induced interstitial lung disease (NOSIDE).

Breast Cancer

The exact incidence of and risk factors for interstitial lung disease (ILD), a serious side effect of abemaciclib, remain unknown in real-world settings. We examined the incidence of and risk factors for abemaciclib-induced ILD in patients with advanced breast cancer (ABC) in Japan.

Retrospective clinical information was collected from charts of patients with ABC who had started abemaciclib treatment at 77 participating institutions between November 30, 2018 and December 31, 2019. The clinical information of patients who developed ILD (including suspected cases) were reviewed by an independent committee of extramural experts to adjudicate abemaciclib-induced ILD. We performed a nested case-control study for efficient identification of ILD risk factors and conducted multivariate Cox regression analysis to identify independent predictors of ILD.

Among patients taking abemaciclib, the incidence of abemaciclib-induced ILD was 5.0% (n = 59/1189), and the mortality rate was 0.7% (n = 8). The timing of ILD onset varied but occurred most frequently within 180 days of beginning abemaciclib treatment (64.4%). The incidence of abemaciclib-induced ILD was significantly associated with Eastern Cooperative Oncology Group performance status (ECOG PS) ≥ 2 [hazard ratio (HR) 5.03; 95% confidence interval (CI) 2.26-11.11] or a past medical history of interstitial pneumonia (IP) (HR 6.49; 95% CI 3.09-13.70).

In this study, we have for the first time determined the real-world incidence of and risk factors for abemaciclib-induced ILD in Japan. Although abemaciclib-induced ILD is serious in real-world settings, careful patient selection and close monitoring of those with poor ECOG PS and/or a history of IP may minimize ILD risk. This study was registered on the UMIN registry (Date: May 11, 2020/ ID: UMIN000040357).

Comprehensive characterization of invasive mammary carcinoma with lobular features: integrating morphology and E-cadherin immunohistochemistry patterns.

Breast Cancer

Breast cancer treatment prioritizes molecular subtypes over histologic types. However, considering the unique biological behavior of invasive lobular carcinoma (ILC), its diagnosis is crucial for patient management. Therefore, this study aimed to review breast cancer cases, focusing on the E-cadherin patterns and lobular morphology of cases misclassified in the original reports.

A comprehensive review was conducted on 481 breast cancer biopsy cases diagnosed as invasive breast carcinoma of no special type (IBC-NST) or ILC with E-cadherin staining. These cases were categorized into six groups based on tumor morphology (ductal/lobular) and E-cadherin expression pattern (membranous/loss/aberrant): (1) ductal/membranous, (2) lobular/loss, (3) lobular/aberrant, (4) mixed, (5) ductal/loss or aberrant, and (6) lobular/membranous.

In 211 cases (43.8%), an E-cadherin pattern indicating ILC (loss and aberrant) was observed alongside lobular morphology, representing 5.52% of all breast cancer biopsies during the relevant period. Moreover, 181 cases (37.6%) showed a membranous pattern with ductal morphology, 4 (0.8%) were mixed IBC-NST and ILC, and 85 (17.7%) exhibited discordance between morphology and E-cadherin expression. Notably, only 25.9% (15/58) of cases in group 3, characterized by aberrant E-cadherin patterns, were initially diagnosed as ILC, highlighting a significant diagnostic discrepancy. In group 6, where membranous E-cadherin pattern was present with lobular morphology, only 3.4% (2/58) were diagnosed as ILC in the original reports, indicating diagnostic challenges in morphology and immunohistochemistry discordance. Similarly, in group 5, which had ductal morphology with loss or aberrant E-cadherin expression, the initial diagnosis rate of IBC-NST was 33.3% (9/27), reflecting the complexities in interpreting discordant cases.

In real-world practice, diagnosing ILC often heavily depends on E-cadherin results. This study emphasizes the need for diagnostic clarification in cases with discordance between morphology and E-cadherin patterns.

Development and validation of a predictive risk tool for VTE in women with breast cancer under chemotherapy: a cohort study in China.

Breast Cancer

The incidence of venous thromboembolism (VTE) is significantly elevated in breast cancer patients, with a three-to-fourfold increase, and further escalates to sixfold in those undergoing chemotherapy. This study aims to identify the risk factors for VTE and develop a Nomogram risk prediction model distinct from the traditional Khorana score.

Univariate Cox regression analysis assessed the impact of each variable on the occurrence of VTE, while stepwise multivariate Cox regression analysis identified independent predictors. Based on these results, we constructed a Nomogram model. The model's performance was validated using the C-index, receiver-operating characteristic curve (ROC), calibration curves, and decision curve analysis (DCA). Comparisons were made with the Khorana score to evaluate the practical application value.

Out of the 903 patients, 108 (11.96%) developed VTE. Cox regression analysis identified that Stage, undergoing surgery, age, white blood cells (WBC), D-dimer, and carcinoembryonic antigen (CEA) were significant risk factors for VTE (P < 0.05). The Nomogram model's C-index was 0.77 (95% CI 0.72-0.83) in the training set and 0.76 (95% CI 0.69-0.84) in the validation set. The model demonstrated excellent predictive accuracy and generalizability on the receiver-operating characteristic (ROC) curves and calibration curves. Compared to the traditional Khorana score, the Nomogram model showed superior predictive accuracy and greater clinical benefit.

This study established a VTE risk prediction model for breast cancer patients undergoing chemotherapy. The model is characterized by its intuitive and straightforward application, making it highly suitable for rapid VTE risk assessment in clinical practice.

Comparative assessment of breast volume using a smartphone device versus MRI.

Breast Cancer

Assessment of breast volume has a relevance for aesthetic surgery and for the prevention and prediction of breast diseases. This study investigated breast volume measurements using a three-dimensional (3D) body surface scanner integrated in a smartphone device in comparison with magnetic resonance imaging (MRI) scans.

Breast volume was assessed for 22 women who underwent routine MRI imaging. 3D surface images were acquired using a smartphone's digital texture camera (iPhone 11 Pro Max, Apple, California, USA, 2019). Breast volumes were manually outlined and calculated by two independent investigators using a 3D software tool (Meshmixer 3.5, Autodesk, Inc., 2018). Volume assessments from MRI images were performed by a radiologist using Syngo.via (Siemens Healthcare, Erlangen, Germany, VB50). The agreement between both methods and the inter-observer agreement was calculated with the concordance correlation coefficients and analysed with Bland-Altman plots.

The mean breast volume as determined by MRI volumetry was 771.0 ml on the left side and 763.9 ml on the right side. Utilizing the 3D body surface volume assessment method, the mean breast volume was measured as 660.3 ml (observer A) and 616.8 ml (observer B) on the left side, and 701.9 ml (observer A) and 638.6 ml (observer B) on the right side. Although a high correlation was observed, differences in volume measurements appeared more pronounced in cases of larger breast volume.

Smartphone-based 3D assessment of breast volume sufficiently agreed with MRI-based breast volume. This new technique could be used for cosmetic breast assessments in a surgical context and possibly in breast cancer risk studies assessing breast volume as outcome parameters.

Causal Pathways Between Breast Cancer and Cardiovascular Disease Through Mediator Factors: A Two-Step Mendelian Randomization Analysis.

International Journal of Epidemiology

The causal relationship of breast cancer (BC) with cardiovascular disease (CVD) and the underlying mediating pathways remains elusive. Our study endeavors to investigate the causal association between BC and CVD, with a focus on identifying potential metabolic mediators and elucidating their mediation effects in this causality.

In this study, we conducted two-sample Mendelian randomization (MR) to estimate the causal effect of BC (overall BC, ER+ BC, ER- BC) from the Breast Cancer Association Consortium (BCAC) on CVD including coronary heart disease (CHD), hypertensive heart disease (HHD), ischaemic heart disease (IHD), and heart failure (HF) from the FinnGen consortium. Then, we used two-step MR to evaluate 18 metabolic mediators of the association and calculate the mediated proportions.

Genetically predicted ER+ BC was causally associated with an increased risk of CVD including CHD (OR = 1.034, 95% CI: 1.004-1.065, p = 0.026), HHD (OR = 1.061, 95% CI: 1.002-1.124, p = 0.041), IHD (OR = 1.034, 95% CI: 1.007-1.062, p=0.013), and HF (OR = 1.055, 95% CI: 1.013-1.099, p = 0.010), while no causality was observed for overall BC and ER- BC. Furthermore, high-density lipoprotein cholesterol (HDL-C) was identified as a mediator of the association between ER+BC and CVD, including CHD (with 15.2% proportion)) and IHD (with 15.5% proportion), respectively.

This study elucidates the potential causal impact of ER+ BC on subsequent risk of CVD, including CHD, HHD, IHD, and HF. We also outline the metabolic mediator HDL-C as a priority target for preventive measures to reduce excessive risk of CVD among patients diagnosed with ER+BC.

Assessment of the Readiness, Beliefs, and Practices Regarding Menstruation Among Women in Saudi Arabia.

International Journal of Epidemiology

Menstruation is a natural process that occurs monthly in women. Although menstruation is a fundamental aspect of women's lives, their readiness for and beliefs about menstruation vary. Moreover, their practices during menstruation can be influenced by various factors, including age, education level, mother's education, and field of specialty. This study aimed to explore menstruation-related readiness, beliefs, and practices among women who had experienced menstruation in Saudi Arabia. In addition, the study aimed to evaluate the factors affecting these women's readiness, beliefs, and practices regarding menstruation.

This cross-sectional online questionnaire-based study included 3471 women of different ages who had experienced menstruation. The participants were selected using convenience sampling from all regions of Saudi Arabia. The questionnaire was distributed between late December 2022 and March 2023 and included questions on demographics and menstruation-related readiness, beliefs, and practices.

Of the 3471 participants, 1627 (46.8%) were well prepared for menstruation. In addition, most of the study participants (80.2%) had positive beliefs about menstruation. However, the participants' menstrual practices varied. Over half of the participants (63%) used painkillers and approximately half (54.4%) used herbal medicine during menstruation.

This study found that less than half of the participants were ready for menarche. In contrast, most participants displayed positive beliefs concerning menstruation. In terms of practices, the women exhibited certain dietary restrictions during their menstrual period and predominantly favored herbal remedies for pain relief over conventional painkillers. Implementing awareness campaigns and incorporating school education on menstrual readiness and hygiene is needed.

A Case Report of Intrauterine Device Migration: Uterine Penetration and Bladder Involvement with Secondary Stones 3 Years Post-Insertion.

International Journal of Epidemiology

Intrauterine devices (IUDs) are among the most popular contraceptive methods globally due to their convenience and cost-effectiveness. However, improper placement can lead to complications such as device migration and uterine perforation, with increased risk observed when IUDs are implanted within four to six weeks postpartum. Typically, patients are asymptomatic or experience mild lower abdominal discomfort or minor abnormal vaginal bleeding following IUD displacement. Advances in diagnostic techniques have resulted in an increased reporting of uterine perforations due to IUD migration. Although rare, secondary stone formation following IUD perforation has been noted. In 2023, cases of IUD perforation were reported in women with a history of multiple cesarean sections and in a young woman without detailed marital history.

The 43-year-old patient, who had an IUD inserted three years prior, exhibited symptoms of frequent urination and painful urination unrelieved by anti-infective and analgesic treatments. The patient underwent cystotomy for foreign body removal, which revealed the IUD had perforated the uterus and bladder, with both arms of the device invaded into bladder wall and covered with concentric stone layers. Complete removal of the IUD and surrounding stones, followed by suturing and postoperative anti-infection analgesic treatment, led to significant symptom improvement.

This case underscores the importance of regular IUD check-ups to prevent uterine perforation and the necessity of considering IUD migration in patients presenting with lower urinary tract symptoms without routine IUD examination. While self-examination by the patient through the strings in the vagina is possible, imaging studies are also indispensable. Surgery has proven to be an effective solution for such complications, but cystoscopy is not always the best option, and the decision to perform open surgery should be based on the patient's perforation and the condition of the surrounding tissues. This paper emphasizes the need for vigilance and proper clinical management.

A Case Report of Retroperitoneal Ectopic Pregnancy and Review of Literature.

International Journal of Epidemiology

Retroperitoneal ectopic pregnancy (REP) is a rare form of ectopic pregnancy, in which fertilised eggs are implanted in the retroperitoneal cavity. Due to its atypical location and non-specific symptoms, REP is often misdiagnosed, leading to delayed treatment. This condition poses serious risks owing to its proximity to the retroperitoneal blood vessels. Limited research and lack of specific guidelines make the management of REP challenging.

A 47-year-old woman with REP was initially misdiagnosed as having acute gastroenteritis due to severe abdominal pain and gastrointestinal symptoms. She had amenorrhoea and significant lower abdominal pain, but no vaginal bleeding. After 35 days of amenorrhoea, the patient's serum beta-human chorionic gonadotropin (β-hCG) level was 16111.94 mIU/mL. Imaging revealed no intrauterine gestational sac; however, a mass was detected in the left adnexal area. Emergency laparoscopy identified a 3.0 cm ectopic mass in the retroperitoneal space, adjacent to the lower edge of the left broad ligament and near critical structures, with surface rupture and bleeding. The mass was surgically removed, and the patient's β-hCG levels returned to normal 33 days post-surgery. In addition, we reviewed previously published English literature on REP, highlighting its characteristics, pathogenesis, diagnosis, and treatment with the aim of improving the understanding and management of the condition.

REP is difficult to diagnose because of its rarity and nonspecific symptoms. Early diagnosis relies on serum β-hCG testing, ultrasonography, and radiological examination. When β-hCG is elevated and no gestational sac is found within the uterus or at common ectopic sites, REP should be considered. Surgical resection is the primary treatment for this condition.

Iatrogenic Female Genitourinary Fistula in Uganda: Etiology, Twelve-Year Trends, and Risk Factors for Development Following Cesarean Section.

International Journal of Epidemiology

To describe the magnitude and trend of the iatrogenic genitourinary fistula in Uganda, and the risk factors for development following the Cesarean Section (CS).

A retrospective review of charts of women with a confirmed diagnosis of genitourinary fistula at four regional fistula repair sites in Uganda between 2010 and 2021 was conducted. A fistula was classified as iatrogenic if it was; ureteric, vesico-cervical, vesico-uterine, or vaginal vault fistula that followed an obstetric or gynecological surgery. The annual proportions for the ischemic and iatrogenic fistula over the study period were compared. A sub group analysis of women with genitourinary fistula delivered by CS was done to determine the factors associated with iatrogenic fistula. Multivariable log binomial regression was performed to determine the independent risk factors.

There were 521 women who presented with genito-urinary fistula of which, 169 (32.4%) were iatrogenic. Most of the iatrogenic fistulae followed CS (71%). The proportions of iatrogenic fistulae increased from 8/52 (9.6%) in 2010 to 38/88 (43.2%) in 2020. The risk factors for iatrogenic fistula following CS were; Grand-multiparity (OR = 5.8; 95% CI: 2.1-15.4), Repeat CS (OR = 4.1; 95% CI: 1.8-9.3), CS performed by an intern doctor (OR = 4.8; 95% CI: 1.5-15.5) and CS done at a Health Centre IV (OR = 4.5; 95% CI: 1.2-16.7).

The magnitude of the iatrogenic genitourinary fistula in Uganda is high and most follow CS. There is an observed rising trend in iatrogenic fistula. The risk factors for iatrogenic fistula following CS are grandmultiparity, repeat CS, CS performed by intern doctors and CS performed at lower health facilities. There is a need for continuous training and supervision of lower cadre doctors involved in CS to reduce on the rising trend of iatrogenic fistula.

Association Between Composite Dietary Antioxidant Index and Endometriosis from NHANES 2001-2006: A Cross-Sectional Study.

International Journal of Epidemiology

To evaluate the association between Composite Dietary Antioxidant Index (CDAI) and the risk of endometriosis in American women.

The study adopted a cross-sectional design, incorporating 3862 women aged over 20 years, selected from the National Health and Nutrition Examination Survey (NHANES) dataset from 2001 to 2006. Six dietary antioxidants were taken into account in calculating CDAI. Endometriosis was determined based on self-report. To evaluate the association between CDAI and the risk of endometriosis, we employed models with multivariable logistic variables. For subgroup assessment in relation to CDAI, a stratified multivariate logistic regression model was utilized.

Among all participants, 273 participants (7.1%) were found to exhibit endometriosis. The preliminary analysis showed a reverse association between CDAI and the likelihood of endometriosis (odds ratio [OR] = 0.95; 95% confidence interval [CI]: 0.92~0.98). Upon full adjustment within the multivariable logistic regression, the ORs (95% CI) for endometriosis prevalence per unit increase in CDAI were estimated to be 0.96 (0.93~1). When the CDAI levels were divided into quartiles, it was found that the ORs for endometriosis with CDAI levels in Q2 (-2.131-0.023), Q3 (0.023-2.650), and Q4 (2.650-42.854) were 0.74 (0.52, 1.05), 0.76 (0.53, 1.1), and 0.53 (0.36, 0.79), respectively, compared to those with CDAI levels in Q1 (-7.151--2.131). We evaluated the association between CDAI and endometriosis using subgroups stratified by age, race/ethnicity, education level, body mass index (BMI), oral contraceptive, and menopausal status, revealing a substantial negative relationship.

In this cross-sectional study, increasing CDAI was proportionally associated with a reduced risk of endometriosis among American women, suggesting a diet high in antioxidants may play an important role in reducing the risk of endometriosis. The findings of NHANES data spanning 2001 to 2006 suggest that promoting antioxidant-rich diets could be an important prevention strategy for endometriosis.

Association of Women Empowerment with Intimate Partner Violence in Saudi Arabia.

International Journal of Epidemiology

The prevalence of intimate partner violence (IPV) is higher among women with lower social and economic status. Moreover, empowerment-focused interventions might not protect them from domestic abuse. This study assessed Saudi women's empowerment and its usefulness as a stand-alone IPV predictor.

400 married women, ages 19 to 65, who visited the outpatient clinics of PHC centers in Riyadh were interviewed using the Women's Empowerment module and the previously Arabic-validated version of the WHO multi-country instrument on Violence Against Women (VAW) to learn more about the beliefs of women regarding IPV and women's empowerment (in the decision-making process and the freedom to move). Logistic regression analysis was employed to identify the IPV predictors. At p<0.05, significance was established.

In terms of physical (18.5%), emotional (25.5%), sexual (19.2%), and economic (25.3%) violence, the lifetime overall IPV prevalence was 44.8%. 19.5% of all women said they had a negative attitude towards IPV. From 41.8% of women who reported a positive attitude towards violence to 45% and 56.8% among those who reported neutral and negative attitudes, respectively, the prevalence of IPV rose significantly (χ2LT = 4.35, p = 0.037). Roughly one-third of women had no authority to make decisions (33%) or the freedom to move about (40.1%). When comparing empowered to non-empowered women, it was found that IPV was significantly less common in the decision-making process (30.1% versus 77%, χ2=74.91, p<0.001) and in the freedom to move (16.2% versus 27.7%, χ2=5.77, p=0.016). After adjusting for relevant confounders, women's empowerment was an independent predictor of IPV (OR=0.734, 95% CI: 0.63-0.85).

Women's empowerment is a strong predictor of IPV. Women who lack social and economic authority should receive assistance from the government. Advocacy initiatives that emphasize transforming cultural perceptions of violence and enabling women to participate in decision-making processes should be supported.