Predictive value of needle core biopsy diagnoses of lesions of uncertain malignant potential (B3) in abnormalities detected by mammographic screening

Predictive value of needle core biopsy diagnoses of lesions of uncertain malignant potential (B3) in abnormalities detected by mammographic screening
M E El-Sayed, E A Rakha, J Reed, A H S Lee, A J Evans, I O Ellis
Histopathology 2008, 53, 650–657

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Approximately 20% of needle core biopsy of screen-detected breast lesions classified as B3 are malignant on excision, and the likelihood of malignancy varies substantially between different histological subtypes

Lobular neoplasia: Core needle breast biopsy underestimation of malignancy in relation to radiologic and pathologic features
Viviana Londero, Chiara Zuiani, Anna Linda, Elena Vianello, Alessandro Furlan, Massimo Bazzocchi
The Breast 17 (2008) 623 - 630

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Purpose: to assess the positive predictive value (PPV) for malignancy of core needle biopsy (CNB) demonstrating lobular neoplasia.
Underestimation of malignancy was more likely in cases of LCIS, US-guided CNB, and lesions that were large and suspicious on imaging.