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PubMed1989

The acceptance and completion of mammography by older black women.

We assessed the relation of patient characteristics, knowledge and beliefs to the utilization of mammography in an inner-city setting by 187 Black women over the age of 50. Thirty per cent of those who were offered mammography initially declined the offer and 40 per cent were subsequently unable to complete the procedure. Patient interviews were used to derive 27 potential knowledge and health belief predictor scales. In multiple regression analysis, two health belief scales and two knowledge scales accounted for 15 per cent of the observed variance in the model of acceptance. The strongest predictor of subsequent completion was initial acceptance. The presence of breast symptoms and two health belief scales together with initial acceptance accounted for 26 per cent of variance in the model of completion. These results suggest that the successful accomplishment of mammography requires coordinated efforts at the level of the provider, patient, and setting. Health beliefs may influence the patient's behavior in this process, but their effect appears to be modest.

Black or African American↗
PubMed1993

Demographic predictors of mammography and Pap smear screening in US women.

OBJECTIVES: Proven screening technologies exist for both breast and cervical cancer, but they are underused by many women. We sought to evaluate the effect of demographic characteristics on the underuse of mammography and Pap smear screening. METHODS: We analyzed responses from 12,252 women who participated in the 1987 National Health Interview Survey Cancer Control Supplement. Demographic profiles were produced to target severely underserved groups of women. RESULTS: Low income was a strong predictor of mammography underuse, as was Hispanic ethnicity and other race, low educational attainment, age greater than 65, and residence in a rural area. A strong predictor of never having had a Pap smear was never having been married; however, the importance of this characteristic is difficult to interpret in the absence of data on sexual activity. Hispanic women and women of other races of all ages and all income levels underused Pap smear screening, as did older women, particularly older Black women. CONCLUSIONS: The tendency of women to underuse screening technologies varies greatly across levels of basic demographic characteristics. The importance of these characteristics differs for mammography screening versus Pap smear screening.

Adult↗
PubMed1997

Questionable data and preconceptions: reconsidering the value of mammography for American Indian Women.

Although the benefits of mammography are well established, many remain skeptical of the value of mammography for American Indian women. This skepticism stems in part from a belief that breast cancer is too rare an event among American Indians to warrant widespread screening. The validity of this assumption for Northern Plains Indians is challenged by a discussion of the limitations of available data on breast cancer in American Indian populations (including lack of generalizability, underestimation, and an overreliance on relative rather than absolute measures of cancer incidence) and by findings from the Minnesota Breast and Cervical Cancer Control Program, a federally funded program providing free breast and cervical cancer screening to American Indian and other women in Minnesota. In light of this information, the authors recommend that the low priority of mammography for American Indian women be reconsidered.

Breast Neoplasms↗
PubMed2000

Maintaining mammography adherence through telephone counseling in a church-based trial.

OBJECTIVES: This study assessed the effectiveness of telephone counseling in a church-based mammography promotion intervention trial. METHODS: Thirty churches were randomized to telephone counseling and control conditions; telephone interview data were used in assessing intervention effects on mammography adherence. Separate analyses were conducted for baseline-adherent participants (maintaining adherence) and baseline-nonadherent participants (conversion to adherence). RESULTS: Year 1 follow-up data indicated that the telephone counseling intervention maintained mammography adherence among baseline-adherent participants and reduced the nonadherence rate from 23% to 16%. CONCLUSIONS: Partnerships between the public health and faith communities are potentially effective conduits to promote maintenance of widely endorsed health behaviors such as regular cancer screening.

Black or African American↗
PubMed2002

Will screening mammography in the East do more harm than good?

OBJECTIVES: We sought to systematically review the evidence for population-based mammography as applied to a Chinese population. METHODS: Primary reports for meta-analysis were identified by a search of MEDLINE and the Cochrane Library. Outcome measures included breast cancer-related mortality, the number needed to be screened to prevent 1 death, and the positive predictive value of mammography. RESULTS: Pooled relative risk for breast cancer-related death in the screened group was 0.80 (95% confidence interval = 0.71, 0.90). Applied to Hong Kong, this figure translates into a number needed to screen of 1 302 healthy women screened annually for 10 years to prevent 1 death. CONCLUSIONS: Evidence is insufficient to justify population-based breast cancer screening by mammography for women in Hong Kong and other Asian populations with low breast cancer prevalence.

Aged↗
PubMed2002

Increasing use of mammography among older, rural African American women: results from a community trial.

OBJECTIVES: A community trial was undertaken to evaluate the effectiveness of the North Carolina Breast Cancer Screening Program, a lay health advisor network intervention intended to increase screening among rural African American women 50 years and older. METHODS: A stratified random sample of 801 African American women completed baseline (1993-1994) and follow-up (1996-1997) surveys. The primary outcome was self-reported mammography use in the previous 2 years. RESULTS: The intervention was associated with an overall 6 percentage point increase (95% confidence interval [CI] = -1, 14) in community-wide mammography use. Low-income women in intervention counties showed an 11 percentage point increase (95% CI = 2, 21) in use above that exhibited by low-income women in comparison counties. Adjustment for potentially confounding characteristics did not change the results. CONCLUSIONS: A lay health advisor intervention appears to be an effective public health approach to increasing use of screening mammography among low-income, rural populations.

Black or African American↗
PubMed2006

Contrast-enhanced breast MRI in patients with suspicious microcalcifications on mammography: results of a multicenter trial.

OBJECTIVE: The objective of our study was to test dynamic MRI in evaluating mammographically detected suspicious microcalcifications. MATERIALS AND METHODS: One hundred twelve patients with mammographically detected microcalcifications with BI-RADS category 5 (n = 78) or 4 (n = 34) lesions were studied at 17 centers a using 3D gradient-echo dynamic coronal technique (< or = 3 mm thickness) and 0.1 mmol/kg of gadoteridol. A pathologic sample was obtained in all cases. Agreement between the major diameter measured on mammography, MRI, or both and the major diameter measured at pathologic examination was calculated in 62 cases. RESULTS: Of the 112 lesions, pathologic examination revealed 37 benign lesions, 33 ductal carcinoma in situ (DCIS), and 42 invasive carcinomas. The specificity of MRI for benign lesions was 68%. Considering the subgroups of calcifications alone and calcifications associated with masses, the specificity values became 79% and 33%, respectively. The sensitivity of MRI for DCIS was 79%. Analysis of the two subgroups showed sensitivity values of 68% for calcifications alone and of 1% for calcifications associated with masses. The sensitivity for invasive carcinomas was 93%. Analysis of the two subgroups showed sensitivity values to be 92% for calcifications alone and 94% for calcifications associated with masses. Considering the overall results, the sensitivity of MRI was 87%; specificity, 68%; positive predictive value, 84%; negative predictive value, 71%; and accuracy, 80%. Considering the subgroups of calcifications alone and calcifications associated with masses, the sensitivity values became 80% and 97%; the positive predictive values, 86% and 82%; the negative predictive values, 71% and 75% (95% confidence interval [CI], 0.19-0.99); and the accuracy values, 80% and 82% (95% CI, 0.66-0.92), respectively. An odds ratio (OR) of 13.54 (95% CI, 5.20-35.28) showed a raised risk of malignant breast tumor in subjects with positive MR examination of mammographically detected suspicious clusters of microcalcifications. The statistical analysis on each subgroup showed an OR of 15.07 (95% CI, 4.73-48.08) for calcifications alone and an OR of 14.00 (95% CI, 1.23-158.84) for calcifications associated with masses. Any significant improvement in the predictive ability of dynamic MRI depending on the extent of calcifications on mammography was not proved. Considering the 62 cases of proved malignancy with measured maximal diameter at pathologic examination, both mammography and MR examination seem to overestimate tumor extent. CONCLUSION: The not-perfect sensitivity of MRI (87%), when applying our interpretation criteria and imaging sequences, is a crucial point that prevents us from clinical use of MRI in the diagnosis of mammographically detected microcalcifications.

Adult↗
PubMed1979

Focal spot size and scatter suppression in magnification mammography.

The improved image quality using magnification in film-screen mammography is related to a complicated interplay between focal spot size, x-ray tube output, detector resolution and sensitivity, air gap size, and target dimensions. Preliminary clinical evaluation of magnification mammography indicates that accuracy of diagnosis has been considerably enhanced. Additional technical and clinical evaluations are continuing, as suggested by mathematical modeling, in order to determine the best possible magnification protocols. While a small focal spot (less than 300 micrometers) is highly recommended for both contact and magnification with the film-screen systems, the smallest focal spot sizes (150 micrometers and smaller) may neither be necessary nor the best in all situations of reduced dose magnification mammography.

Female↗
PubMed1982

Computed tomographic mammography using a conventional body scanner.

The technique for computed tomographic (CT) examination of the breasts using a conventional body scanner is described, and experience with 67 patients is reported. In the diagnosis of both malignant and benign breast lesions, the results with a body scanner were equal to those of a dedicated CT/M mammographic unit. Although the CT study of the breast cannot replace conventional mammography in screening or in routine diagnostic workup, the unique capability of demonstrating both anatomic changes and increased iodide concentration in a cancer provides many advantages over conventional mammography. CT mammography appears to have the capability to detect breast cancers that are occult to other methods. Indications for a CT study of the breasts are: (1) clinically suspected breast cancer, especially with a mammographically occult lesion; (2) questionable mammographic findings, including microcalcifications, tumor shape, architectural distortion, and uncertain lesion location; and (3) evaluation of postbiopsy or postlumpectomy breast cancers when a primary irradiation therapy is contemplated. Breast CT also appears to be a valuable diagnostic tool in searching for a second primary breast cancer, follow-up study of postirradiation of breast cancer, followup study for postmastectomy patients, and screening procedure for genetically high-risk patients, especially those with dense breasts.

Adult↗
PubMed1984

Detection of breast carcinoma: comparison of automated water-path whole-breast sonography, mammography, and physical examination.

A comparative study of independently conducted physical examination, x-ray mammography, and sonography of the breast was carried out on 786 women having 77 excisional biopsies with 31 proven breast carcinomas. On breast sonography, 68% of the carcinomas were demonstrated with three false-positive diagnoses, compared with 65% cancer detection rate on physical examination with 37 false positives, and 77% detection rate on mammography with 15 false positives. Sonography was considered complementary to the other methods and of distinct usefulness after mammography (1) to examine the dense breast; (2) to study dense, poorly demonstrated areas; (3) to differentiate cystic from solid masses; and (4) to study breasts with augmentation mammoplasties. There were no added benefits in mammographically normal fatty breasts. The procedure was readily accepted by both women and their referring physicians.

Adult↗
PubMed1986

Screening mammography: referral practices of Los Angeles physicians.

The American Cancer Society (ACS) recommends annual screening mammography for asymptomatic women over 50 years old. In a survey of attitudes and referral practices toward screening mammography, one-fifth (886) of the 4200 physicians queried returned a postage-paid questionnaire. Only 11% of respondents followed the ACS guidelines. Physicians under 40 years old, in group practice, or in surgical specialties were more apt to refer their patients for screening. The major deterrent to referral was the perceived high cost and low yield of screening. However, 80% of the physicians indicated they would refer patients over 50 who requested annual screening. Annual mammography screening is underused; greater efforts must be directed toward educating physicians and patients regarding its value and toward lowering its cost.

California↗
PubMed1986

Baseline screening mammography: one vs two views per breast.

To compare the advantages of one-view vs two-view mammography screening, films were reviewed for 2500 consecutive asymptomatic women undergoing baseline mammography. To provide screening at low cost, examinations were limited to two radiographs per breast, one each in the craniocaudal and mediolateral oblique projections, with the understanding that those few patients with detected abnormalities would require additional mammograms, taken with an individually directed, problem-solving approach, at considerably higher cost. Two separate interpretations were made of each case, one using only the oblique projection images, the other using both oblique and craniocaudal views. Two-view interpretations not only identified more cancers than one-view readings (27 vs 25), they also required fewer additional mammograms to evaluate potential abnormalities (179 vs 642, 7% vs 26%). These advantages outweigh the additional radiation risk and added cost. Baseline screening mammography should be done with two views per breast.

Breast Neoplasms↗
PubMed1988

A personal-computer reporting system for mammography.

A reporting system for mammography that uses a personal computer (IBM AT or compatible) and keyboard input of data was evaluated. The system's functions are described and compared with a standard dictation/transcription system. Approximately 500,000 bytes of disk storage are needed for the mammography program, which produces letters for physicians and patients, copies for the file room, and confirmation forms and accumulates data for future scientific analysis. Use of the computerized system resulted in a 6% increase in productivity for the radiologist, decreased the typist's keystrokes to 7.7-8.5% of those needed in dictation/transcription systems, and produced a 69% savings of time for the typist. The study shows that a personal computer and the software program described can be used effectively for reporting mammography results in situations in which a computerized reporting system previously was not economically viable.

Female↗
PubMed1992

Hidden costs of mobile mammography: is subsidization necessary?

Two major impediments to an effective mammography program are inaccessibility and cost. This article itemizes the expenses associated with providing a mobile screening program accredited by the American College of Radiology (ACR) during a 3-year period. Mobile Diagnostics Inc. established a mobile mammography service in April 1987. A 36-ft (11-m) van is staffed by two registered technologists. The unit includes on-board processing and educational videotapes. Analysis of expenses for the years 1988, 1989, and 1990 does not include interpretation fees. A total of 3522 patients were examined in 1988, 4232 in 1989, and 5005 in 1990. Fixed operating expenses in 1988 were $70/examination and variable expenses were $13/examination, resulting in an average total cost per examination of $83. Fixed costs in 1989 were $63, variable costs were $15, and total costs were $78 per examination. Fixed costs in 1990 were $55, variable costs were $14, and total costs were $69 per examination. Many third parties, including Medicare, are contemplating a global screening fee in the $50-$60 range. An average payment of $55 would require examination of more than 6500 patients a year or 28 patients a day to break even. Our experience suggests that some form of subsidization may be necessary to sustain a mobile mammography service at those reimbursement levels.

Costs and Cost Analysis↗
PubMed1993

Screening mammography: value in women 35-39 years old.

OBJECTIVE: The value of screening mammography for detecting early breast cancer in younger women is not widely recognized. We review the results of screening mammography and of breast biopsies performed on the basis of mammographic findings in women 35-39 years old to determine the detection rate for breast cancer and the stage of breast cancers detected at mammographic screening in this age group. MATERIALS AND METHODS: Computer-tabulated results of mammography in women 35-39 years old who participated in a mobile mammographic screening program during the 36-month period from January 1989 to December 1991 were retrospectively reviewed with a standardized data collection form. Pathology reports from biopsies recommended on the basis of screening mammograms or follow-up examinations (coned views/sonograms) also were reviewed. Data were compared with results of mammographic screenings and pathologic findings at biopsy in women 40-49 years old who participated in this screening program during the same period. RESULTS: A total of 5105 screening mammograms were obtained in women 35-39 years old. Of these, 4654 (91%) showed no abnormalities. Biopsy was recommended in 36 (< 1%). Eight biopsies showed carcinoma, intraductal in five and stage I infiltrating ductal in three. Mammograms showed calcifications in all cancers detected; two infiltrating cancers also had an associated mass. The number of breast cancers detected was 1.6 per 1000 screenings, comparable to our rate of 1.4 cancers per 1000 screenings in women 40-49 years old. Because the number of cancers detected was small, the 95% confidence interval for the ratio of detection rates was wide, ranging from 2.56:1 to 1:2.29. CONCLUSION: Early stage tumors in women 35-39 years old can be detected on mammograms. The breast cancer detection rate in women 35-39 years old was comparable to that for women in their forties in our population; however, our data do not exclude a more than twofold difference in detection rates between these two groups. These data should be considered in determining the value of mammographic screening in women 35-39 years old.

Adult↗
PubMed1993

Computerized mammography data base systems.

A computerized mammography data base system is a specialized radiology information system that is usually maintained on personal computers and is designed to facilitate the data processing tasks associated with mammography. This article is intended to assist readers in developing an organized approach to evaluating or designing a computerized mammography data base system, and to help in determining if such a system is feasible. Some initial decisions are necessary. Consideration should be given to how mammograms are currently processed in the department to be computerized. It may be helpful to draw a detailed flow chart of the procedures that are followed as a mammogram is acquired and paperwork is assembled, and then chart the flow of information from the mammographer outward (e.g., to a transcriptionist, to referring physicians, to patients). These steps are essential to define how current procedures can be enhanced by computerization and will also indicate current methods that can be modified vs those that personnel are unwilling to change. Such analysis provides a template by which commercially available systems can be evaluated, and it is a necessary first step for those who decide to design a system.

Mammography↗
PubMed1997

Should women with implants or a history of treatment for breast cancer be excluded from mammography screening programs?

OBJECTIVE: Our objective was to determine whether it is scientifically justified to require that women with implants or a history of treatment for breast cancer be screened in a diagnostic mammography setting and that they be excluded from mammography screening programs. MATERIALS AND METHODS: The recall rates for women with breast implants or a history of treatment for breast cancer who were screened in a dedicated mammography screening program were compared with those of other women in the screening program. The computerized records for the breast screening program of the Department of Radiology at our institution for January 1, 1990, through December 31, 1995, were reviewed. The recall rates for women who had breast implants and those for women with a history of treatment for breast cancer were compared with the recall rates for the other women who underwent screening. Each recall rate included women who were called back for additional evaluation in addition to those for whom a biopsy was recommended on the basis of the screening study. RESULTS: Of 45,134 screening examinations done during the review period, 43,454 (96%) were for women who had no history of breast cancer or of breast implants; 590 (1%) were for women who had undergone mastectomy; 991 (2%) were for women who had been treated with lumpectomy and irradiation for breast cancer; and 99 (0.2%) were for women with breast implants. Among the 43,454 examinations of women with no history of breast cancer or implants, 3081 examinations (7%) led to interpretations that produced requests for the patient to return for additional evaluation. Thirty-six women who had been treated for breast cancer by mastectomy were recalled (6%). Seventy-five women who had undergone lumpectomy and irradiation for breast cancer were recalled (8%). Five women with breast implants were recalled (5%). Statistically, these rates were not significantly different. CONCLUSION: We find no scientific reason to exclude women who have been treated for breast cancer or who have breast implants from dedicated screening programs.

Breast Implants↗
PubMed1997

Fatty and fibroglandular tissue volumes in the breasts of women 20-83 years old: comparison of X-ray mammography and computer-assisted MR imaging.

OBJECTIVE: A method for segmenting MR images of the breast was applied to determine fatty and fibroglandular tissue volumes in breasts of women in different age groups. The results were compared with subjective assessments of breast density from X-ray mammograms in the same patients. MATERIALS AND METHODS: Two experienced mammographers assessed the percentage of fat in the breasts of 40 women who were 20-83 years old. MR images were obtained on a 1.0-T scanner equipped with a bilateral receive-only breast coil. Images were acquired using a three-dimensional T1-weighted gradient-echo sequence with a 1.25 x 1.4 x 2.5 mm resolution. On average, breast parenchyma appeared in 30 images in each breast. Image segmentation was based on a semiautomated, two-compartmental (fatty and fibroglandular tissue) model that accounts for partial volume effects. To validate the accuracy of the MR imaging segmentation technique, we performed a phantom study using an identical imaging sequence. RESULTS: The accuracy of the MR imaging segmentation of the phantom was of the order of 2%. In our subjects, fat content was 42.5% +/- 30.3% (mean +/- SD) on mammography versus 66.5% +/- 18% on MR images. Although we found a significant correlation (r = .63) between the two techniques, mammography poorly differentiated breasts containing less than 45% fat. When our analysis included only dense breasts (i.e., those containing less than 75% fat on MR images), the correlation coefficient decreased to .34. The largest discrepancies between mammography and MR imaging occurred in breasts that had 60-80% fat as measured on MR imaging. CONCLUSION: Fatty and fibroglandular tissue can be differentiated on MR images of the breast with high precision and accuracy, therefore allowing assessment of breast density. The conclusions of researchers who used mammographic density patterns should be reassessed.

Adipose Tissue↗