Heterogeneous risk profiles among B3 breast lesions of uncertain malignant potential.
Tumori
; 106(2): 115-125, 2020 Apr.
Article
em En
| MEDLINE
| ID: mdl-31451072
ABSTRACT
BACKGROUND:
Most cases of breast lesions of uncertain malignant potential (B3) undergo surgical intervention. We aimed to analyze the outcome of B3 lesion subtypes in a large series of screen-detected cases.METHODS:
We screened 2,986 core needle biopsies to classify B3 lesions. Positive predictive values (PPVs) for malignancy were calculated for a comprehensive risk characterization according to clinicopathologic and morphologic variables.RESULTS:
B3 lesions comprised 35% atypical ductal hyperplasia (PPV = 20%), 16.7% flat epithelial atypia (PPV = 12%), 22.7% lobular neoplasia (PPV = 16.2%), 9% papillary lesion (PPV = 18.5%), 8.6% phyllodes tumor (PPV = 3.8%), and 8% radial scars (PPV = 4.1%) based on histopathologic diagnosis. Upgrade rates were 15.9% for calcifications, 13.7% for mass lesions, and 16.7% for architectural deformities, with 8.3% of malignant lesions classified as ductal carcinoma in situ and 6.7% as invasive cancers (PPV = 15%).CONCLUSION:
B3 lesions entail a heterogeneous risk of malignancy, and careful radiologic-pathologic correlation is required for optimal treatment.Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Lesões Pré-Cancerosas
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Neoplasias da Mama
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Carcinoma in Situ
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Carcinoma Intraductal não Infiltrante
Tipo de estudo:
Diagnostic_studies
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Etiology_studies
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Prognostic_studies
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Risk_factors_studies
Limite:
Aged
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Female
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Humans
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Middle aged
Idioma:
En
Ano de publicação:
2020
Tipo de documento:
Article