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US screening for detection of nonpalpable locoregional recurrence after mastectomy

Authors
 Jin Hwa Lee ; Eun-Kyung Kim ; Kyung Jin Nam ; Se Heon Cho ; Miri Lee ; Dae Cheol Kim ; Seong Hwan Kim ; Hyuk-Chan Kwon ; Jong Young Oh 
Citation
 European Journal of Radiology, Vol.82(3) : 485~489, 2013 
Journal Title
 European Journal of Radiology 
ISSN
 0720-048X 
Issue Date
2013
Abstract
PURPOSE: To assess the value of screening ultrasonography (US) in the detection of nonpalpable locoregional recurrence following mastectomy for breast cancer and to describe the US appearances of occult recurrent cancers. MATERIALS AND METHODS: During a 36-month period, 1180 consecutive US screenings were performed for mastectomy sites and ipsilateral axillary fossae in 468 asymptomatic women who had undergone mastectomy for breast cancer. All US results were divided into three groups: negative findings, probably benign nodules, and suspicious for malignant nodules. The final diagnoses were based on pathology results and clinical or sonographic follow-up for more than 12 months. The diagnostic performance of US for detecting nonpalpable locoregional recurrence was assessed. The US appearances of occult recurrent cancers were retrospectively reviewed. RESULTS: Of the 468 patients assessed, 19 (4.1%) showed "suspicious for malignant nodules"; of these lesions, 10 were malignant. One false-negative case was identified. The sensitivity and specificity were 90.9% and 98.0%, respectively. A biopsy positive predictive value of 52.6% was observed. Cancer detection rates were 2.1% with US screenings of mastectomy sites and ipsilateral axillary fossae. The common US features of occult recurrences at the mastectomy sites were irregular shaped, not-circumscribed marginated, and hypoechoic masses with intratumoral vascularities. The most common location was within the deep muscle layer. CONCLUSION: Although locoregional recurrence infrequently occurs after mastectomy for breast cancer, screening US enables detection of nonpalpable cancer before it can be detected by clinical examination. Routine follow-up US can be advocated for early detection of nonpalpable locoregional recurrent cancer.
URI
http://ir.ymlib.yonsei.ac.kr/handle/22282913/86509
DOI
10.1016/j.ejrad.2012.10.007
Appears in Collections:
1. 연구논문 > 1. College of Medicine > Dept. of Radiology
Yonsei Authors
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Link
 http://www.sciencedirect.com/science/article/pii/S0720048X1200486X
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