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  • 1
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    The @breast journal 1 (1995), S. 0 
    ISSN: 1524-4741
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract: The purpose of this study was to assess the efficacy of mammography of breast cancer in women less than 30 years old. A retrospective record review revealed 47 breast cancers in 45 women age 29 and younger who had preoperative mammography. Patients ranged in age from 22 to 29 years (mean = 27 years). All presented with clinically evident disease. Mammography revealed focal abnormality in 26 (55.3%) of 47 cases. Specific positive mammographic findings (n = 22) included uncalcified mass in ten (45.5%), calcification without mass in nine (40.9%), mass and calcifications in two (9.1%), and skin ulceration in one. Mammographic parenchymal density (n= 21) was P2 in 9 (42.9%) and DY in 12 (57.1%). The mean time interval from symptom onset to biopsy was 4.5 months, but was shorter if the mammogram was positive. High parenchymal density contributes to the diminished sensitivity of mammography in women under age 30. A positive mammogram may hasten the diagnosis of carcinoma in a young woman with palpable malignant breast disease.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Annals of surgical oncology 4 (1997), S. 310-315 
    ISSN: 1534-4681
    Keywords: Microsatellite ; Instability ; Breast carcinoma ; Mutation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Microsatellites are short repetitive nucleotide sequences that, through mutation, can undergo either expansion or contraction. This novel mutational mechanism known as microsatellite instability may play a role in carcinogenesis. We investigated the incidence of microsatellite instability in a series of primary breast carcinoma surgical specimens. Methods: Using polymerase chain reaction techniques followed by polyacrylamide/urea gel electrophoresis, we analyzed 46 pairs of normal and primary breast tumor samples at seven different microsatellite loci, five of which were located on chromosome 17. Results: Thirteen of our 46 tumors (28.2%) demonstrated microsatellite instability. Five tumors (10.8%) were unstable at two or more loci, and of those, four (8.7%) were unstable at different loci on different chromosomes. An additional five tumors demonstrated loss of heterozygosity alone when compared with their normal counterparts. Conclusions: These findings indicate that microsatellite instability is present in primary breast cancer populations and, although the mechanism of action has yet to be elucidated, may play a role in breast carcinogenesis.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1534-4681
    Keywords: Breast cancer, prognosis ; Breast cancer, men
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Considerable debate exists concerning the prognosis of breast cancer in male patients compared with that in female patients. Some studies have observed worse prognosis for men; others suggested the higher mortality rates were primarily due to delayed diagnosis. Methods: Survival time from diagnosis with invasive disease to death resulting from breast cancer of 58 men treated between 1973 and 1989 was compared with survival of 174 women treated between 1976 and 1978 who were matched by stage of disease and age at diagnosis. All patients were treated by mastectomy and axillary dissection. Results: Tumors were ⩽2 cm in 70% of cases and 55% were free of axillary metastases. The histology of the tumors differed significantly by gender (p〈0.05). Significantly more men had estrogen receptor-positive tumors (87%) than did women (55%, p〈0.001). Survival at 10 years was similar for male and female patients. Multivariate analysis controlling for tumor size, number of positive axillary lymph nodes, age at diagnosis, histology, and receptor status indicated no significant difference in survival of male compared with female patients. Conclusions: These data conflict with the conventional wisdom that breast cancer in men carries a worse prognosis than the disease in women. Although histology of the tumor and receptor status differed by gender, these factors did not have an impact on survival in these paired patients. Our data indicate that breast carcinoma in males is not biologically more aggressive than in females.
    Type of Medium: Electronic Resource
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  • 4
    ISSN: 1534-4681
    Keywords: p16 ; (CDKN2) ; MTS1 ; Breast carcinoma ; Microdissection ; Genetic alterations
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The p16 gene (CDKN2), a tumor suppressor gene located on chromosome 9p21, has been demonstrated to be mutated or deleted with high frequency in a variety of tumor cell lines, including breast. While previous studies have not demonstratedCDKN2 mutations in primary breast carcinomas, it is possible that gene deletion in neoplastic DNA was masked by the presence of contaminating normal stromal DNA in breast carcinoma specimens. Methods: We investigated the incidence of homozygous deletion ofCDKN2 by analyzing 20 microdissected pure populations of primary breast carcinoma cells. Using polymerase chain reaction (PCR) techniques, the entire coding region and intervening introns ofCDKN2 were amplified. The PCR products were resolved by agarose gel electrophoresis and single-strand conformation polymorphism (SSCP) analysis. Results: We detected no deletions or mutations of the p16 gene. Conclusions: CDKN2 is not deleted with high frequency in primary breast carcinomas, and the p16 gene does not play a role in breast carcinogenesis via this mechanism.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1534-4681
    Keywords: Sentinel lymph nodes ; Frozen section ; Macrometastases ; Micrometastases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Routine intraoperative frozen section (FS) of sentinel lymph nodes (SLN) can detect metastatic disease, allowing immediate axillary dissection and avoiding the need for reoperation. Routine FS is also costly, increases operative time, and is subject to false-negative results. We examined the benefit of routine intraoperative FS among the first 1000 patients at Memorial Sloan Kettering Cancer Center who had SLN biopsy for breast cancer. Methods: We performed SLN biopsy with intraoperative FS in 890 consecutive breast cancer patients, none of whom had a back-up axillary dissection planned in advance. Serial sections and immunohistochemical staining for cytokeratins were performed on all SLN that proved negative on FS. The sensitivity of FS was determined as a function of (1) tumor size and (2) volume of metastatic disease in the SLN, and the benefit of FS was defined as the avoidance of a reoperative axillary dissection. Results: The sensitivity of FS ranged from 40% for patients with T1a to 76% for patients with T2 cancers. The volume of SLN metastasis was highly correlated with tumor size, and FS was far more effective in detecting macrometastatic disease (sensitivity 92%) than micrometastases (sensitivity 17%). The benefit of FS in avoiding reoperative axillary dissection ranged from 4% for T1a (6 of 143) to 38% for T2 (45 of 119) cancers. Conclusions: In breast cancer patients having SLN biopsy, the failure of routine intraoperative FS is largely the failure to detect micrometastatic disease. The benefit of routine intraoperative FS increases with tumor size. Routine FS may not be indicated in patients with the smallest invasive cancers.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Annals of surgical oncology 5 (1998), S. 23-27 
    ISSN: 1534-4681
    Keywords: Early breast cancer ; Axillary lymph node metastases ; Axillary dissection ; Regional metastases
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: We investigated the incidence of axillary lymph node metastases in patients with T1a (⩽0.5 cm) and T1b (〉0.5 cm and ⩽1.0 cm) breast cancers. Methods: The charts of 2000 patients who underwent axillary lymph node dissection for breast cancer at our institution from 1989 to 1991 were reviewed. Of these, 81 patients had T1a and 166 had T1b primary breast cancers. Results: Among the 247 patients with T1a and T1b breast cancers, nodal metastases were present in 30 (12.1%), with a 7.4% positivity rate for patients with T1a and 14.5% positivity rate for T1b tumors. Of the 212 patients who had ⩾10 nodes dissected, 29 (13.7%) had positive nodes. Of those, 6 of 60 (10.0%) patients with T1a and 23 of 152 (15.1%) with T1b tumors had positive nodes. The presence of lymphovascular invasion (LVI) predicted a significantly higher nodal positivity rate (27.8% vs. 10.9%,p=0.05). Conclusions: Of patients with adequately evaluated axillae, 10% with T1a and 15% with T1b cancers were found to have nodal metastases. Although LVI was significantly associated with a higher risk of lymph node metastases, we could not characterize any subgroup at acceptably low risk of nodal positivity. Until a more useful prognostic indicator is discovered, axillary dissection should continue to be part of the mainstay of management for small breast cancers.
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1534-4681
    Keywords: Breast cancer ; Genetics ; Prophylactic mastectomy
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The discovery of a cadre of breast cancer susceptibility genes has resulted in an increase in the number of women seeking information about prophylactic breast surgery, but virtually no large-scale prospective databases exist to assist women considering prophylactic mastectomy. Methods: The authors constructed a National Prophylactic Mastectomy Registry comprised of a volunteer population of 817 women from 43 states who have undergone prophylactic mastectomy. Results: In the registry, 370 women had undergone bilateral prophylactic mastectomy. Twenty-one (5%) women expressed regrets about the procedure. The median follow-up was 14.6 years (mean 14.8 years; range 0.2–51 years). Those with regrets were subsetted into those with major (n=10) or minor (n=7) regrets. Regrets were more common in those women with whom discussion about prophylactic mastectomy was initiated by a physician (19/255), compared with patients who initiated the discussion themselves (2/108;P〈.05). Conclusions: The overall satisfaction rate of 95% reported here may be explained by the voluntary nature of this registry. The most important factor that predicts an unfavorable outcome following bilateral prophylactic mastectomy is a physician-initiated discussion.
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1534-4681
    Keywords: Age ; Intraductal breast carcinoma ; Breast ductal carcinoma in situ ; Volume of resection ; Breast conservation ; Local recurrence
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: The optimal treatment of ductal carcinoma in situ (DCIS) is one of the most controversial issues in the management of breast cancer. Identification of factors that affect the risk of local recurrence is very important as the incidence of DCIS increases and the use of breast conservation becomes more widespread. Because the extent of resection may affect the relapse rate, we hypothesized that larger volumes of resection (VR) may account for the lower local recurrence rates we have previously found in elderly patients. Methods: Between 1978 and 1990, 173 cases of histologically confirmed DCIS were treated at MSKCC with breast conservation therapy. Of these, complete VR data were available for 126 cases. The VRs thus obtained were divided into two groups, 〈60 cm3 and ⩾60 cm3, and were evaluated for correlating factors. The patients were divided into three groups by age at diagnosis: younger than 40 years, 40 to 69 years, and 70 years or older. Results: The eldest group had a significantly greater proportion of large VRs (30%) as compared to the middle group (11%) and the youngest group (9%) (P=.03, x2). Although not statistically significant, the large VR group had a lower 6-year actuarial local recurrence rate (5.6%) than did the small VR group (21.3%) (P=.16, log-rank test). This trend was observed even though adjuvant radiotherapy was used less often in patients who had large VRs. Conclusion: Breast conservation surgery for DCIS in elderly patients is more likely to employ a large VR. This may explain, at least in part, the observation that elderly patients have a lower local recurrence rate.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1534-4681
    Keywords: Prophylactic mastectomy ; Contralateral breast cancer
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Patients with a history of carcinoma of one breast have an estimated risk of 0.5% to 0.75% per year of developing a contralateral breast cancer. This risk prompts many women to consider contralateral prophylactic mastectomy (CPM) as a preventive measure. Virtually nothing is known about patient acceptance following CPM. We have developed a National Prophylactic Mastectomy Registry comprised of a volunteer population of 817 women from 43 states who have undergone prophylactic (unilateral or bilateral) mastectomy. Methods: Of the 346 women with CPM who responded to national notices, 296 women returned detailed questionnaires. The information obtained included patient demographics, family history, reproductive history, ipsilateral breast cancer staging and treatment, as well as issues involving the CPM. Results: At median follow-up of 4.9 years, the respondents were primarily married (79%), white (97%) women who had some level of college education or above (81%). These women cited the following reasons for choosing CPM: (1) physician advice regarding the high risk of developing contralateral breast cancer (30%); (2) fear of developing more breast cancer (14%); (3) desire for cosmetic symmetry (10%); (4) family history (7%); (5) fibrocystic breast disease (4%); (6) a combination of all of these reasons (32%); (7) other (2%); and (8) unknown (1%). Eighteen of the 296 women (6%) expressed regrets regarding their decision to undergo CPM. Unlike women with bilateral prophylactic mastectomies, regrets tended to be less common in the women with whom the discussion of CPM had been initiated by their physician (5%) than in the women who had initiated the discussion themselves (8%) (P = ns). Family history and stage of index lesion had no impact on regret status. The reasons for regret included: (1) poor cosmetic result, either of the CPM or of the reconstruction (39%); (2) diminished sense of sexuality (22%); (3) lack of education regarding alternative surveillance methods or CPM efficacy (22%); and (4) other reasons (17%). Conclusions: To minimize the risk of regrets in women contemplating CPM, it is imperative that these women be counseled regarding an estimation of contralateral breast cancer risk, the alternatives to CPM, and the efficacy of CPM. In addition, these women should have realistic expectations of the cosmetic outcomes of surgery and understand the potential impact on their body image.
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1534-4681
    Keywords: Breast cancer surgery ; Sentinel node biopsy.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Background: Radiotracer and blue dye mapping of sentinel lymph nodes (SLN) have been advocated as accurate methods to stage the clinically negative axilla in breast cancer patients. The technical aspects of SLN biopsy are not fully characterized. In this study we compare the results of intraparenchymal (IP) and intradermal (ID) injection of Tc-99m sulfur colloid, to establish an optimal method for SLN localization. Methods: 200 consecutive patients had SLN biopsy performed by a single surgeon. Of these, 100 (Group I) had IP injection and 100 (Group II) had ID injection of Tc-99m sulfur colloid. All patients had IP injection of blue dye as well. Endpoints included (1) successful SLN localization by lymphoscintigraphy, (2) successful SLN localization at surgery, and (3) blue dye–isotope concordance (uptake of dye and isotope by the same SLN). Results: Isotope SLN localization was successful in 78% of Group I and 97% of group II patients (P 〈 .001). When isotope was combined with blue dye, SLN were found in 92% of group I and 100% of Group II (P 〈 .01). In cases where both dye and isotope were found in the axilla, dye mapped the same SLN as radiotracer in 97% of Group I and 95% of Group II patients. Conclusions: The dermal and parenchymal lymphatics of the breast drain to the same SLN in most patients. Because ID injection is easier to perform and more effective, this technique may simplify and optimize SLN localization.
    Type of Medium: Electronic Resource
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