Three-dimensional tumor visualization of invasive breast carcinomas using whole-mount serial section histopathology: implications for tumor size assessment.

PURPOSE: Linear tumor size (T-size) estimated with conventional histology informs breast cancer management. Previously we demonstrated significant differences in margin and focality estimates using conventional histology versus digital whole-mount serial sections (WMSS). Using WMSS we can measure T-size or volume. Here, we compare WMSS T-size with volume, and with T-size measured conventionally. We also compare the ellipsoid model for calculating tumor volume to direct, WMSS measurement. METHODS: Two pathologists contoured regions of invasive carcinoma and measured T-size from both WMSS and (simulated) conventional sections in 55 consecutive lumpectomy specimens. Volume was measured directly from the contours. Measurements were compared using the paired t-test or Spearman's rank-order correlation. A five-point 'border index' was devised and assigned to each case to parametrize tumor shape considering 'compactness' or cellularity. Tumor volumes calculated assuming ellipsoid geometry were compared with direct, WMSS measurements. RESULTS: WMSS reported significantly larger T-size than conventional histology in the majority of cases [61.8%, 34/55; means = (2.34 cm; 1.99 cm), p < 0.001], with a 16.4% (9/55) rate of 'upstaging'. The majority of discordances were due to undersampling. T-size and volume were strongly correlated (r = 0.838, p < 0.001). Significantly lower volume was obtained with WMSS versus ellipsoid modeling [means = (1.18 cm3; 1.45 cm3), p < 0.001]. CONCLUSIONS: Significantly larger T-size is measured with WMSS than conventionally, due primarily to undersampling in the latter. Volume and linear size are highly correlated. Diffuse tumors interspersed with normal or non-invasive elements may be sampled less extensively than more localized masses. The ellipsoid model overestimates tumor volume.

Cost-effectiveness analysis of whole-mount pathology processing for patients with early breast cancer undergoing breast conservation.

BACKGROUND: Obtaining accurate histopathologic detail for breast lumpectomy specimens is challenging because of sampling and loss of three-dimensional conformational features with conventional processing. The whole-mount (wm) technique is a novel method of serial pathologic sectioning designed to optimize cross-sectional visualization of resected specimens and determination of margin status. METHODS: Using a Markov chain cohort simulation cost-effectiveness model, we compared conventional processing with wm technique for breast lumpectomies. Cost-effectiveness was evaluated from the perspective of the Canadian health care system and compared using incremental cost-effectiveness ratios (icers) for cost per quality-adjusted life-year (qaly) over a 10-year time horizon. Deterministic and probabilistic sensitivity analyses were performed to test the robustness of the model with willingness-to-pay (wtp) thresholds of $0-$100,000. Costs are reported in adjusted 2014 Canadian dollars, discounted at a rate of 3%. RESULTS: Compared with conventional processing, wm processing is more costly ($19,989 vs. $18,427) but generates 0.03 more qalys over 10 years. The icer is $45,414, indicating that this additional amount is required for each additional qaly obtained. The model was robust to all variance in parameters, with the prevalence of positive margins accounting for most of the model's variability. CONCLUSIONS: After a wtp threshold of $45,414, wm processing becomes cost-effective and ultimately generates fewer recurrences and marginally more qalys over time. Excellent baseline outcomes for the current treatment of breast cancer mean that incremental differences in survival are small. However, the overall benefit of the wm technique should be considered in the context of achieving improved accuracy and not just enhancements in clinical effectiveness.

Developing and supporting school health programs. Role for family physicians.

PROBLEM BEING ADDRESSED: School staff are anxious about the demands on their time associated with a perceived increase in health problems among their students. OBJECTIVE OF PROGRAM: To respond to these concerns by developing a health committee in two elementary schools and one high school. The health committee could perform needs assessments and, with the results of these assessments and a careful literature review, could develop health policies and procedures appropriate to the school environment and to evolving community expectations. MAIN COMPONENTS OF PROGRAM: A committee of four family physicians (nonremunerated parents of students), one of whom served as Chair, four school administrators, and one part-time remunerated nurse practitioner explored aspects of illness in the schools. They studied approaches to acute and chronic student illness; emergency response; management of children with special needs; environmental safety; health promotion; and the availability and quality of resources for learning about health for teachers, administrators, parents, and students. CONCLUSION: Opportunities exist for family physicians to expand their involvement in child and adolescent health in schools. Involvement should be collaborative and multidisciplinary and reflect community interests and needs.

Are physicians meeting the needs of family caregivers of the frail elderly?

OBJECTIVE: To explore expressed needs, both formal and informal, of family caregivers of frail elderly. To evaluate roles of physicians. DESIGN: Questionnaire survey of members of the Montreal Jewish community providing care for frail elderly family members. SETTING: Jewish community of Montreal. PARTICIPANTS: Volunteer caregivers who were caring for a family member or friend 60 years or older, who had greatest responsibility for providing physical or emotional support to an elderly person, who saw themselves as caregivers, and who could speak English or French were studied. Of 118 volunteers, 32 were excluded because they withdrew for personal reasons or because they did not meet study criteria. MAIN OUTCOME MEASURES: Demographic variables, functional status of the care receiver, use of home care services, and needs assessment to identify additional services. RESULTS: An average of 75.4% respondents did not use formal support services. Just under half of caregivers were dissatisfied with the attention they received from the health care system, and more than one third expressed feelings of stress, depression, guilt, and isolation. CONCLUSIONS: Hypotheses for this discontent are presented. Physicians may be uninterested in helping caregivers; even if they were receptive to counseling caregivers, they could be poorly remunerated for the types of counseling sessions that are usual for caregivers; and being a professional caregiver to family caregivers is demanding in itself.