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Query: UMLS:C0006142 (breast cancer)
 160,383 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Although women with breast cancer tend to have a greater proportion of their circulating oestradiol non-protein bound and albumin bound, and less SHBG-bound, than controls, it remains uncertain whether this has an aetiological role or is an effect of the tumour. Oestradiol and its binding to serum proteins was investigated: (a) in relation to risk factors for breast cancer in a normal population; (b) in women with proliferative benign breast disease as a risk group for breast cancer, and women with non-proliferative benign breast disease as a low risk group, as well as breast cancer patients. The strongest associations were with body mass index; the greater the body mass the greater the bioavailability of oestradiol. Changes in relation to age at menarche and menopause could have been a function of body mass. An interesting change with age was noted with a fall in bioavailability over the menopausal years. There was no relationship apparent for parity, age at first full term pregnancy, family history or country of birth. Similar differences in oestradiol binding between cases and controls were seen for patients with breast cancer, benign epithelial hyperplasia and fibrocystic disease without proliferative changes, but these were not significant. This study provides limited support for the concept that oestradiol binding has an aetiological role in the development of breast cancer.
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PMID:Oestrogen binding and risk factors for breast cancer. 231 Jun 82

Breast cyst fluid (BCF) aspirated from 12 women with fibrocystic disease of the breast and sera obtained simultaneously were analyzed for bile acids. Analysis was performed by gas-liquid chromatography of the acetoxy methyl esters of the bile acids prepared after alkaline hydrolysis of the bile salts. An internal standard served to correct for methodological losses. Low levels of bile acids were found in serum samples, precluding overt hepatobiliary complications. Deoxycholic acid (17-160 mumol/L), chenodeoxycholic acid (18-305 mumol/L), and cholic acid (3-119 mumol/L) were detected in 11 of 12 samples of BCF. In 2 cases, chosen at random, the identities of the bile acids were verified by mass spectrometry. Lithocholic acid (9-23 mumol/L), a reported cocarcinogen, was detected in 6 of the 12 samples of BCF. This is the first report of the presence of lithocholic acid in BCF with confirmation by Mass spectrometry. There was no correlation between the levels of individual bile acids and those of potassium ion, Na+/K+, estriol-3-sulfate, or 16 alpha-hydroxyandrogen sulfates that had been quantified previously in these samples. There was borderline correlation between concentrations of total bile acids and K+ (P less than 0.06) and Na+/K+ (P less than 0.07). Yet to be elucidated are the mechanism of accumulation of bile acids in BCF and whether levels of particular bile acids in BCF may serve to identify that small subset of women with fibrocystic disease at risk for developing breast cancer.
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PMID:Bile acids in human breast cyst fluid: the identification of lithocholic acid. 231 33

Tissue culture techniques have been developed for studying the influence of hormones on human breast tissues. The present study demonstrated that estrogen induced a highly significant increase in 3H-thymidine incorporation into DNA and labelling index of ductal epithelium of fibrocystic disease; there was no effect of progesterone, either alone or in combination with ovine prolactin, on benign lesions. Estrogen stimulated certain malignant tumors derived from postmenopausal women. These studies also showed that there was an inhibitory effect of 3H-thymidine incorporation into DNA by the effect of progesterone on malignant lesions. When menopausal status was considered, it was found that DNA synthesis was significantly higher in the presence of insulin and hydrocortisone in malignant tumors derived from premenopausal women than from postmenopausal women, or than in benign lesions. Thus, the present findings may provide evidence that specific activity may be an important measurement for breast tumor DNA synthesis in response to ovarian hormones or other substances.
Breast Cancer Res Treat 1986
PMID:Influence of hormones on DNA synthesis of breast tumors in culture. 243 57

CA 15-3 levels were determined immunoradiometrically in sera of 63 women with breast cancer (44 with stage I to III cancer, pre-operatively, 5 with local recurrence or lymphnode metastases and 14 patients with distant metastases) and 30 women with benign breast tumours or fibrocystic disease. 32% elevated levels (greater than 25 U/ml) have been found in all carcinomas compared with 7% in 44 patients without any evidence of disease (NED) and 0% in the benign lesions. In locally limited breast carcinomas, the very low pre-operative sensitivity of 16% prevents early tumour detection, whereas in patients with distant metastases a sensitivity of 86% (12 out of 14) has been found. In follow-up, continuous rising of CA 15-3 levels reveals metastatic or progressive disease with a great accuracy, decreasing serum values were only found in cases of remission. A positive correlation between the actual clinical situation in follow-up and the changes in these tumour marker levels has been observed in 87%. The CA 15-3 test system seems to be useful assay for patients with breast cancer with respect to earlier detection of distant metastases, especially of osseous type. This tumour marker is not suitable for screening or early diagnosis of small tumour recurrence in the follow-up of breast cancer patients.
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PMID:[Initial experiences with CA-15-3 determination in the serum of patients with breast cancer]. 255 15

The relationship between fibrocystic disease and the risk of developing breast cancer has been established based on proliferative changes seen in breast biopsies and the follow-up of patients. 70% of the female patients present a non-proliferative fibrocystic process without any risk of further development of cancer as compared with the rest of the population. 30% of patients with fibrocystic disease present a proliferative process with or without atypia. Those without atypia have a risk of 1.5-2.0 X as compared to non-biopsied patients. Age, family history and presence of microcalcification increases the risk factor in those patients with proliferative lesions. It is recommended that the pathologic diagnosis include the risk factor when fibrocystic disease is reported.
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PMID:[Is fibrocystic disease precancerous?]. 269 Aug 35

The benefits of combined oral contraceptives are put into perspective, considering their effectiveness as a contraceptive, actual risks for breast, ovarian, endometrial and cervical cancer, and effects of reproductive and other body systems. Combined oral contraceptives are the best contraceptives available except for injectable progestogens, therefore they an reduce the risk of maternal mortality by at least 5 in nonsmoking western women, or over 100 in developing countries. No data are available on mortality risk of the presumed safer low-dose pills. Pills reduce ectopic pregnancy to virtually nil. They decrease the risk of endometrial cancer, and of ovarian cancer for up to 15 years after use. Although they protect against benign breast disease, both fibrocystic disease and fibroadenoma, which are risk factors for breast cancer, it is unsettled whether pills affect breast cancer incidence. Cervical cancer risk may be slightly higher. Functional ovarian cysts requiring surgery are cut about 10-fold; corpus luteum and follicular cysts are also reduced. Fibroids are decreased in proportion to duration of use. Pelvic inflammatory disease rates fall 50% during use. Chlamydial infections have not fallen in pill users, but it is not known whether sexual activity is a factor. Combined pills cut abnormal uterine bleeding by about half, reduce the incidence of iron deficiency anemia and of premenstrual tension. Seizures related to menses also are controlled. Some studies find a reduction in rheumatoid arthritis. Most of the cardiovascular complications of pills are thought to be dose related. Since today's pills contain approximately the same dose as a whole cycle of the original pills, it is expected that these risks will be greatly reduced, especially with better screening of candidates that is now the rule.
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PMID:The benefits of combined oral contraceptives. 269 95

Clinical macrocysts occur in about 7% of adult women. Modern terminology and understanding of benign breast disorders considers microcysts and macrocysts as specific clinical and pathological entities. The terminology and concepts of fibrocystic disease and its many alternative terms have been discarded. Cysts arise as an aberration of normal lobular involution (ANDI) associated with active secretion of apocrine epithelium under hormonal stimulation. They are readily managed in most cases by aspiration alone. Multiple recurrent cysts may constitute a considerable nuisance and justify short-term therapy with danazol. There is increasing evidence that multiple recurrent cysts are associated with a small, but significant increase in breast cancer risk.
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PMID:Breast macrocysts. 269 24

Linkage analysis was conducted in 17 families identified by the familial occurrence of breast and ovarian cancer using a series of 17 serologic and biochemical markers. Lod scores suggestive of linkage of breast/ovarian cancer susceptibility to the RH blood group locus on chromosome 1p were obtained. When the presence of fibrocystic disease of the breast in a first-degree relative of an affected family member was added as an indicator of susceptibility, the evidence for linkage increased. No evidence of linkage to GPT or ABO, both previously suggested to be linked to breast cancer susceptibility, was seen in this study.
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PMID:A genetic linkage study of familial breast-ovarian cancer. 272 Jun 37

A statistical analysis of 1500 patients who underwent subcutaneous mastectomy is presented. Their data suggest that most patients who were treated by subcutaneous mastectomy had proliferative fibrocystic disease or macrocystic disease, among other high risk factors. The data also suggest that a thoroughly performed subcutaneous mastectomy is an effective means of providing prophylaxis in women who are at high risk for breast cancer. Conclusions were confirmed by many unsolicited comments of patients who underwent the procedure and were grateful to their doctors who performed it.
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PMID:Subcutaneous mastectomy data: a final statistical analysis of 1500 patients. 272 94

Estriol-3-sulfate (E3-3S) was assayed in 92 specimens of human breast cyst fluid (BCF) obtained by needle aspiration from women with fibrocystic disease. The concentrations of K+ and Na+ were determined in the same samples. The median concentration of E3-3S in the fluids from premenopausal women under 51 years of age (69 cases) was 4.4 ng/mL. Based on the K+ levels the samples were divided into two groups, above 50 mM (Type I) and below 50 mM (Type II). Correlations were made between the concentrations of the estrogen conjugate and the univalent ions. In the premenopausal women, Type I cysts were associated with above median E3-3S and Type II cysts with below median E3-3S (P less than 0.01). A K+/Na+ ratio of more than one was also related to elevated E3-3S (P less than 0.025). The BCF obtained from postmenopausal women and women older than 50 years tended to be low in E3-3S (median 1.64 ng/mL) and high in K+ but there were too few cases to permit statistical comparisons to be made. Since fibrocystic disease constitutes a risk factor for the development of breast cancer, it will be of interest to determine retrospectively whether any of the above subsets of BCF may be useful in identifying a patient at such risk.
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PMID:Correlation of concentrations of estriol-3-sulfate with those of potassium and sodium in human breast cyst fluid. 301 May 12


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