Subcategorization of ultrasonographic BI-RADS category 4: positive predictive value and clinical factors affecting it.

@article{Yoon2011SubcategorizationOU,
  title={Subcategorization of ultrasonographic BI-RADS category 4: positive predictive value and clinical factors affecting it.},
  author={Jung Hyun Yoon and Min Jung Kim and Hee Jung Moon and Jin Young Kwak and Eun-Kyung Kim},
  journal={Ultrasound in medicine & biology},
  year={2011},
  volume={37 5},
  pages={693-9}
}
The objective of this study was to evaluate the positive predictive value (PPV) in ultrasonographically (US)-detected breast lesions of BI-RADS category 4a, 4b and 4c and to find how various clinical factors influenced the PPV of category 4. A total of 2142 women with 2430 breast lesions diagnosed on US as BI-RADS category 4 and underwent biopsy were included. Among them, 452 (18.6%) were pathologically confirmed as malignancy. PPV of each US BI-RADS subcategory was 7.6% (149/1963) for category… CONTINUE READING

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