Mammography and 99mTc-MIBI scintimammography in suspected breast cancer

被引:0
|
作者
Prats, E
Aisa, F
Abós, MD
Villavieja, L
Garcia-López, F
Asenjo, MJ
Razola, P
Banzo, J
机构
[1] Univ Teaching Hosp, Dept Nucl Med, Zaragoza, Spain
[2] Univ Teaching Hosp, Dept Gynecol, Zaragoza, Spain
[3] Univ Teaching Hosp, Dept Radiol, Zaragoza, Spain
关键词
(TC)-T-99m-MIBI scintimammography; mammography; breast cancer diagnostic protocol;
D O I
暂无
中图分类号
R8 [特种医学]; R445 [影像诊断学];
学科分类号
1002 ; 100207 ; 1009 ;
摘要
The aim of this work has been to evaluate whether a diagnostic protocol based on the joint use of mammography and Tc-99m-methoxyisobutyl isonitrile (MIBI) scintimammography is capable of reducing the number of biopsies required in patients with suspected breast cancer. Methods: We performed prone scintimammography in 90 patients with suspected breast cancer, involving 97 lesions. In all patients, the diagnosis was established by way of biopsy. On mammography, we evaluated the degree of suspicion of malignancy and the size of the lesion (smaller or larger than 1 cm in diameter). Results: The results of only 41 of the biopsies indicated malignancy. On mammography, 20 lesions (of which 1 was breast cancer) were considered to be of low suspicion of malignancy, 31 (of which 4 were breast cancer) as indeterminate and 46 (of which 36 were breast cancer) as high. Fourteen lesions (2 low probability, 2 indeterminate and 10 high) were smaller than 1 cm, whereas 83 (18 low probability, 29 indeterminate and 36 high) were larger. The sensitivity, specificity, positive predictive value and negative predictive value of scintimammography were 85%, 79%, 74% and 88%, respectively. Scintimammography was positive in all cases of breast cancer that initially had a low or indeterminate suspicion of malignancy according to mammography, as well as in 30 cases of breast cancer that initially were highly suspicious. Six false-negative scintimammography studies were obtained in lesions with a high suspicion of malignancy. Conclusion: We propose a diagnostic protocol with a biopsy performed on lesions that have a high suspicion of malignancy as well as those with low or indeterminate suspicion that are smaller than 1 cm or with positive scintimammography results. This would have reduced the total number of biopsies performed by 34%. More importantly, there would have been a 65% reduction in number of biopsies performed in the low and indeterminate mammographic suspicion groups. All 41 cases of breast cancer would have been detected.
引用
收藏
页码:296 / 301
页数:6
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