Evaluation of aspiration biopsy cytology in the diagnosis of breast diseases.

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  • 乳腺疾患に対する穿刺吸引細胞診の評価

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Abstract

During the past 2 years, Aspiration Biopsy Cytology (A. B. C.) was performed in 76 patients with breast diseases; 44 cases were breast cancers and 32 were benign lesions (23; mastopathy, 4; fibroadenoma, 3; phyllodes tumor, 2; mastitis). The results were as follows.<br>1) True positive rate of 75.0% for the breast cancer was satisfactory and almost the same as reported by other authors.<br>2) False negative rate of 20.5% was higher, as compared with other publications. Small lesions, non-invasive and scirrhous carcinoma were the reasons for cytological misinterpretation.<br>3) True negative and suspicious rates for benign lesions were 68.8% and 25.0%, respectively.<br>4) False positive rate of 6.3% was considered to be favorable. It suggested that A. B. C. was a reliable method in the correct diagnosis of breast cancer.<br>We conclude that A. B. C. should be indicated as a principal modality for the suspicious lesions of the breast.

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