Survival Outcomes for Metaplastic Breast Cancer Differ by Histologic Subtype

Background

Metaplastic breast carcinoma (MBC) is a rare, aggressive subtype of breast cancer associated with poorer overall survival than other triple-negative breast cancers. This study sought to compare survival outcomes among histologic subtypes of MBC with those of non-metaplastic triple-negative breast cancer.

Methods

Clinicopathologic and treatment data for all patients with non-metastatic, pure MBC undergoing surgery from 1995 to 2017 and for a large cohort of patients with other types of triple-negative breast cancer during that period were collected from an institutional database. The MBC tumors were classified as having squamous, spindle, heterologous mesenchymal, or mixed histology. Survival outcomes were compared using the Kaplan-Meier method.

Results

Of 132 MBC patients, those with heterologous mesenchymal MBC (n?=?45) had the best 5-year overall and breast cancer-specific survival (BCSS, 88%; 95% confidence interval [CI], 0.78–0.99), whereas those with squamous MBC had the worst survival (BCSS, 56%; 95% CI, 0.32–0.79). Overall survival, BCSS, and recurrence-free survival were worse for the patients with MBC than for the patients who had non-MBC triple-negative breast cancer, with a clinicopathologically adjusted recurrence hazard ratio of 2.4 (95% CI, 1.6–3.3; p?<?0.001). Of the 10 MBC patients who received neoadjuvant chemotherapy, 4 progressed while receiving treatment, and 3 had no response.

Conclusions

Metaplastic breast carcinoma is associated with worse survival than other triple-negative breast cancers. The heterologous mesenchymal subtype is associated with the best survival, whereas the squamous subtype is associated with the worst survival. These data call for research to identify therapies tailored to MBC’s unique biology.

     

A simple scoring system to estimate perioperative mortality following liver resection for primary liver malignancy—the Hepatectomy Risk Score (HeRS)

BackgroundSelection of the optimal treatment modality for primary liver cancers remains complex, balancing patient condition, liver function, and extent of disease. In individuals with preserved liver function, liver resection remains the primary approach for treatment with curative intent but may be associated with significant mortality. The purpose of this study was to establish a simple scoring system based on Model for End-stage Liver Disease (MELD) and extent of resection to guide risk assessment for liver resections.MethodsThe 2005–2015 NSQIP database was queried for patients undergoing liver resection for primary liver malignancy. We first developed a model that incorporated the extent of resection (1 point for major hepatectomy) and a MELD-Na score category of low (MELD-Na =6, 1 point), medium (MELD-Na =7–10, 2 points) or high (MELD-Na >10, 3 points) with a score range of 1–4, called the Hepatic Resection Risk Score (HeRS). We tested the predictive value of this model on the dataset using logistic regression. We next developed an optimal multivariable model using backwards sequential selection of variables under logistic regression. We performed K-fold cross validation on both models. Receiver operating characteristics were plotted and the optimal sensitivity and specificity for each model were calculated to obtain positive and negative predictive values.ResultsA total of 4,510 patients were included. HeRS was associated with increased odds of 30-day mortality [HeRS =2: OR =3.23 (1.16–8.99), P=0.025; HeRS =3: OR =6.54 (2.39–17.90), P<0.001; HeRS =4: OR =13.69 (4.90–38.22), P<0.001]. The AUC for this model was 0.66. The AUC for the optimal multivariable model was higher at 0.76. Under K-fold cross validation, the positive predictive value (PPV) and negative predictive value (NPV) of these two models were similar at PPV =6.4% and NPV =97.7% for the HeRS only model and PPV =8.4% and NPV =98.1% for the optimal multivariable model.ConclusionsThe HeRS offers a simple heuristic for estimating 30-day mortality after resection of primary liver malignancy. More complicated models offer better performance but at the expense of being more difficult to integrate into clinical practice.     

Female Genital Cutting and Deinfibulation: Applying the Theory of Planned Behavior to Research and Practice

At least 200 million girls and women across the world have experienced female genital cutting (FGC). International migration has grown substantially in recent decades, leading to a need for health care providers in regions of the world that do not practice FGC to become knowledgeable and skilled in their care of women who have undergone the procedure. There are four commonly recognized types of FGC (Types I, II, III, and IV). To adhere to recommendations advanced by the World Health Organization (WHO) and numerous professional organizations, providers should discuss and offer deinfibulation to female patients who have undergone infibulation (Type III FGC), particularly before intercourse and childbirth. Infibulation involves narrowing the vaginal orifice through cutting and appositioning the labia minora and/or labia majora, and creating a covering seal over the vagina with appositioned tissue. The WHO has published a handbook for health care providers that includes guidance in counseling patients about deinfibulation and performing the procedure. Providers may benefit from additional guidance in how to discuss FGC and deinfibulation in a manner that is sensitive to each patient’s culture, community, and values. Little research is available to describe decision-making about deinfibulation among women. This article introduces a theoretically informed conceptual model to guide future research and clinical conversations about FGC and deinfibulation with women who have undergone FGC, as well as their partners and families. This conceptual model, based on the Theory of Planned Behavior, may facilitate conversations that lead to shared decision-making between providers and patients.

     

Quality assurance management methods applied to a local-level primary health care system in rural Nigeria

Introduction. Management of primary health care (PHC) systems in less developed countries is often impeded by factors such as poorly trained personnel, limited financial resources, and poor worker morale. This study explored the ability of local-level PHC supervisors in rural Nigeria to use quality assurance (QA) management methods to improve the quality of the PHC system. Methods. PHC supervisors from Bama Local Government Area were trained for 3 days in the use of QA methods and tools. The supervisors targeted the supervisory system and the health information system (HIS) for improvement. Health worker performance in diarrhoea case management was assessed, using a simulated case, to measure the impact of supervision. A HIS audit assessed data collection forms used by 17 PHC facilities. Gaps in quality were monitored over a 2-month study period and flaws in work processes were modified. Results. PHC supervisors introduced a checklist during monthly visits to facilities to monitor how workers managed cases of diarrhoea. Performance in history-taking, physical examination, disease classification, treatment and counselling improved over the evaluation period. The HIS audit found that a variety of reporting forms were used at PHC facilities. After HIS reporting was standardized, the number of health facilities using a daily disease registry significantly improved during the study period. Conclusions. QA management methods were used by PHC supervisors in Nigeria to improve supervision and the HIS. QA management methods are appropriate for improving the quality of the PHC in Nigeria and in other less developed countries where at least a minimal PHC infrastructure exists.     

Do case-mix adjusted nursing home reimbursements actually reflect costs? Minnesota's experience

Some states have adopted Medicaid reimbursement systems that pay nursing homes according to patient type. These case-mix adjusted reimbursements are intended in part to eliminate the incentive in prospective systems to exclude less profitable patients. This study estimates the marginal costs of different patient types under Minnesota's case-mix system and compares them to their corresponding reimbursements. We find that estimated costs do not match reimbursement rates, again making some patient types less profitable than others. Further, in confirmation of our estimates, we find that the percentage change in patient days between 1986 and 1990 is explained by our profitability estimates.     

Higher total homocysteine concentrations and lower folate concentrations in premenopausal black women than in premenopausal white women.

BACKGROUND: Premenopausal black women have a greater rate of coronary artery disease (CAD) than do premenopausal white women. Plasma total homocysteine concentrations, a risk factor for CAD, have not been reported in premenopausal black women. OBJECTIVE: The purpose of this study was to compare plasma total homocysteine, folate, and vitamin B-12 concentrations in premenopausal black and white women. DESIGN: Eighty-nine black and 90 white, healthy, premenopausal women living in Portland, OR, were recruited. Dietary histories were obtained by using the Diet Habit Survey, a 40-item eating-behavior questionnaire. Plasma concentrations of total homocysteine, folate, and vitamin B-12 were measured. RESULTS: Black women had higher plasma total homocysteine (8.32 compared with 7.60 micromol/L;P = 0. 013), lower plasma folate (6.62 compared with 9.88 nmol/L;P < 0. 0001), and higher vitamin B-12 (355 compared with 283 pmol/L;P < 0. 001) concentrations than white women. White women had a greater rate of daily multivitamin supplement use (42.4% compared with 24.7%;P = 0.019) and ate more ready-to-eat cereal than did black women. After adjustment for multivitamin use and intake of ready-to-eat cereal, plasma total homocysteine concentrations did not differ significantly, but plasma folate remained significantly lower in the black women. None of the black women but 12.3% of the white women (P = 0.013) were homozygous for the cytosine to thymidine mutation at nucleotide 677 in the methylenetetrahydrofolate reductase gene. CONCLUSIONS: Black women had higher plasma total homocysteine and lower plasma folate concentrations than white women, largely because of lifestyle factors, which may contribute to the greater rate of CAD in premenopausal black than in white women.