title: Power Doppler and gray-scale sonography standardized by BI-RADS for             the differentiation of benign postoperative lesion and local recurrence after             breast-conserving therapy.
abstract: The diagnosis of ipsilateral breast tumor recurrence (IBTR) after breast-conserving             therapy is of great interest to breast physicians. The present study compared             the utility of gray-scale sonography standardized by a breast imaging reporting             and data system (BI-RADS) and power Doppler sonography for differentiating between             benign scar formation and IBTR after breast-conserving therapy. Gray-scale sonography             detected 83 solid breast lesions classified as BI-RADS categories 3-5 in 272 patients             after breast-conserving therapy, and these lesions were entered into the study             (53 lesions as category 3, probably benign; 30 lesions as categories 4-5, suspected             malignancy). Power Doppler sonography revealed intratumoral flow in 19 of 83 solid             breast lesions. BI-RADS category 3 was accepted as probably benign and BI-RADS             categories 4-5 were considered as suspicious for breast tumor recurrence in the             gray-scale ultrasound criteria. Positive and negative intratumoral flow were employed             as suspicious for breast tumor recurrence and probably benign, respectively, in             the power Doppler sonography criteria. Sensitivity was higher for power Doppler             sonography (94.7±10.0%) than for gray-scale sonography (57.9±22.2%). Specificity             was also higher for power Doppler sonography (98.4±3.0%) than for gray-scale sonography             (70.3±0.6%). These results suggest that power Doppler sonography can complement             gray-scale sonography standardized by BI-RADS in differentiating between IBTR             and benign scar lesions.
authors: Department of Radiology, Kochi Medical School, Kochi University, Kohasu, Oko-cho, Nankoku-shi, Kochi 783-8505, Japan. kubotak@kochi-u.ac.jp
authors: Kei
authors: K
authors: Kubota
authors: Hitomi
authors: H
authors: Iwasa
authors: Nobutaka
authors: N
authors: Aoyama
authors: Norihiko
authors: N
authors: Hamada
authors: Munenobu
authors: M
authors: Nogami
authors: Taiji
authors: T
authors: Tamura
authors: Akihito
authors: A
authors: Nishioka
authors: Yasuhiro
authors: Y
authors: Ogawa
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000000981:diagnostic imaging* / Q000601:surgery; D003937:Diagnosis, Differential; D055088:Early Detection of Cancer; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted; D015412:Mastectomy, Segmental; D008875:Middle Aged; D009364:Neoplasm Recurrence, Local / Q000000981:diagnostic imaging*; D012015:Reference Standards; D018608:Ultrasonography, Doppler / Q000592:standards*