Showing papers on "Mammography published in 1970"

Accuracy of screening methods for the diagnosis of breast disease.

Abstract: Clinical examination, thermography, and 70-mm. mammography were performed in 891 patients—414 presented to hospital with symptoms of breast disease and 477 were asymptomatic. Comparison of the diagnostic accuracy of these methods showed that neither thermography nor 70-mm. mammography has a useful place as an isolated screening procedure for breast cancer. In fact, we consider such a policy dangerous.

Evaluation of Roentgen Exposure in Mammography: Part I: Six Views

Abstract: Radiation exposure was measured in 100 female patients undergoing mammography by the Egan technique. Both axillary views were excluded to simulate expected exposures in a large population survey. Additionally, 40 phantom studies were performed on a modified Alderson-RANDO phantom. Every attempt was made to reproduce the clinical situation. Patient dose ranged from background on the dorsum of the left foot to a maximum of 11 R on the surface of the inner breast. This compares to a maximum of 18 R reported earlier when the axillary views were included. With axillary views omitted, bone marrow measurements showed a 300% reduction in exposure.

Breast Cancer Found on Repetitive Examination in Mass Screening

Abstract: Both clinical examination and mammography remain important in repetitive screening. If either modality had been omitted, a substantial number of cancers would have been undetected. Absence of axillary nodal involvement remains substantially higher in the screened group than in the control. In subsequent screening, overall figures for lack of gland involvement have reached 75% as compared to 44% in the control group. On initial examination, the clinician was more successful in the small glandular breast and in the under-50 age group. In subsequent screening, the differences remained but a narrowing of the gap was apparent.

Is Screening for Cancer Worth While? Results from a Well-woman Clinic for Cancer Detection

Abstract: 1,768 women were screened for breast and cervical cancer in the year May 1968 to April 1969. Clinical examination followed the completion of a simple questionary. Investigations included thermography and mammography of the breast and cytology of the cervical and vaginal smears. Breast cancer was detected in 15 patients (0·85% or 8·5 per 1,000) and none was aware of any abnormality though 13 of the tumours were clinically palpable. Carcinoma in situ of the cervix was found in a further eight (0·45% or 4·5 per 1,000).

Mammography and breast diseases

Abstract: Mammography and breast diseases , Mammography and breast diseases , کتابخانه مرکزی دانشگاه علوم پزشکی ایران

Cancer of the breast. Early diagnosis.

Abstract: There is no direct evidence that earlier diagnosis improves the absolute survival of patients with cancer of the breast. There is, however, good evidence that those breast cancers which are brought to light by screening programmes are smaller in size and associated with a lower incidence of axillary node metastases than those arising spontaneously.' I The influence of delay in seeking treatment on the prognosis of cancer of the breast has been studied by Bloom.3 Contrary t,o popular belief, he found no relation between the duration of symptoms before treatment and survival rates. The explanation for this apparent paradox lies in the inherent malignancy of the tumour. Thus Bloom found that the histological grades of those tumours associated with long histories before presentation were lower (in other words, the tumours were less malignant) than in those with short histories. Further, within each histological grade, the length of time before treatment increased the number of more advanced cases. Thus the relatively good survival rates of patients with long histories are due to a process of natural selection, only those with relatively favourable tumours being able to survive a long period between the time the tumour was discovered and treated.

Mammographic evaluation of palpable breast masses with pathological correlation: a tertiary care centre study in Nepal

Abstract: Introduction: Breast cancer is one of the major health problem for all countries. . In Nepal , breast cancer is the second most common cancer in female. Early detecting tools like mammography can able to detect location , size, morphology, and nature of breast lesions that can help to reduced mortality and morbidity from breast cancer significantly. Methods: This prospective study was carried out at the department of Radiology, Surgery and Pathology for a period of one year. A total of 100 patients with clinically palpable breast lump were subjected to mammography and subsequently to FNA or biopsy. The mammograms were reviewed by two senior consultant radiologists and pathology by a senior pathologist. Results: Out of 100 patients, 65% had mammographic features of benign lesion and 35% had features of malignancy. Pathology revealed 64% of lesion to be benign and 36% of lesion to be malignant. There were four false negative (6.2%) and three false positive (8.6%) cases. The sensitivity and specificity of mammography were 88.9% and 95.53% respectively. The mean age of patient with malignant lesion was 46.3 years (SD=11.5) and 34.7 years (SD=10.6) for benign lesions. Among malignant lesion 37.1% had lobulated, 14.3% had oval, 31.4% round and 17.1% had irregular shape with spiculated margin in 60% and indistinct margins in 34.3%. Among benign 7.7% showed lobulated shape, 41.5% oval and 50.8% round shape. Circumscribed margin was found in 93.9% of benign and 5.7% of malignant lesions. Punctuate and polymorphic calcification was found in malignant lesions (25.7% and 5.7%). Secondary changes were found in only in the malignant cases. Halo sign was found only in benign cases and most common in fibroadenoma (38.4%). Conclusions: Mammography is an effective diagnostic tool for benign and malignant characteristic of palpable breast mass. Keywords : Breast lump; mammography; micro calcification DOI: http://dx.doi.org/10.3126/joim.v32i2.4940 Journal of Institute of Medicine , August, 2010; 32: 21-25

Mammography

Abstract: The principles of mammography are presented. Technical details suitable for use in a general department are described. The prospective and retrospective results with clinical and histological correlation are shown in respect of the first sixty-three cases examined in this department. The scope and limitations of mammography are discussed.