Update on Percutaneous Needle Biopsy of Nonmalignant Breast Lesions
Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, 330 Brookline Avenue, Boston, MA02215, USA.Advances in anatomic pathology (Impact Factor: 3.23). 08/2009; 16(4):183-95. DOI: 10.1097/PAP.0b013e3181a9d33e
Certain nonmalignant lesions encountered on percutaneous breast biopsies pose dilemmas with regard to the most appropriate clinical management subsequent to needle biopsy (ie, surgical excision vs. follow-up). These lesions include columnar cell lesions, atypical ductal hyperplasia, lobular neoplasia, papillary lesions, radial scars, fibroepithelial lesions, and mucocele-like lesions. As minimally invasive diagnostic procedures are now standard it is more important than ever to be aware of the limitations of percutaneous biopsy, particularly with regard to apparently benign lesions because of the risk that the radiologically detected lesion may harbor malignant disease not represented in the biopsy specimen. This underscores the importance of radiologic-pathologic correlation. Increasingly, radiologists are adopting vacuum-assisted devices using larger gauge needles. The changing practices among radiologists are reflected in recent studies which have enriched the literature. In addition, magnetic resonance imaging is being used more frequently in breast imaging, resulting in pathologists more often encountering benign biopsies with uncertain imaging correlation. These changes prompted evaluation of the recent literature and its possible effect on management concerns. This review focuses on management issues following the diagnosis of nonmalignant lesions diagnosed on percutaneous breast biopsy and highlights imaging terms commonly used in breast radiology reports to facilitate accurate radiologic-pathologic correlation.
Conference Paper: Techniques for classifying acoustic resonant spectra[Show abstract] [Hide abstract]
ABSTRACT: A second-generation nondestructive evaluation (NDE) system that discriminates between different types of chemical munitions is under development. The NDE system extracts features from the acoustic spectra of known munitions, builds templates from these features, and performs classification by comparing features extracted from an unknown munition to a template library. Improvements over first-generation feature extraction, template construction and classification algorithms are reported. Results are presented on the performance of the system on a large data set collected from surrogate-filled munitionsSignals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on; 01/1994
Conference Paper: Time-frequency distributions that preserve energy variations[Show abstract] [Hide abstract]
ABSTRACT: We present and illustrate the shortcomings of Cohen's (1989) class of bilinear time-frequency distributions (BTFD) in preserving short-time energy variations of the individual frequency components of a multi-component signal. We then define a suitable energy variation property and derive a constraint on the BTFD kernel which is necessary and sufficient for this energy variation property. To satisfy the constraints exactly, the kernel must be signal dependent. We conclude that positive time-frequency distributions, which have signal-dependent kernels, may provide the best approach to the exact solution to this problemTime-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on; 11/1994
- Jornal Brasileiro de Patologia e Medicina Laboratorial 04/2010; 46(2). DOI:10.1590/S1676-24442010000200002
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