Ultrasonographic morphological characteristics determined using a deep learning-based computer-aided diagnostic system of breast cancer.
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Abstract
To investigate the correlations between ultrasonographic morphological characteristics quantitatively assessed using a deep learning-based computer-aided diagnostic system (DL-CAD) and histopathologic features of breast cancer.This retrospective study included 282 women with invasive breast cancer (<5ācm; mean age, 54.4 [range, 29-85] years) who underwent surgery between February 2016 and April 2017. The morphological characteristics of breast cancer on B-mode ultrasonography were analyzed using DL-CAD, and quantitative scores (0-1) were obtained. Associations between quantitative scores and tumor histologic type, grade, size, subtype, and lymph node status were compared.Two-hundred and thirty-six (83.7%) tumors were invasive ductal carcinoma, 18 (6.4%) invasive lobular carcinoma, and 28 (9.9%) micropapillary, apocrine, and mucinous. The mean size was 1.8āĀ±ā1.0 (standard deviation)ācm, and 108 (38.3%) cases were node positive. Irregular shape score was associated with tumor size (Pā<ā.001), lymph nodes status (Pā=ā.001), and estrogen receptor status (Pā=ā.016). Not-circumscribed margin (Pā<ā.001) and hypoechogenicity (Pā=ā.003) scores correlated with tumor size, and non-parallel orientation score correlated with histologic grade (Pā=ā.024). Luminal A tumors exhibited more irregular features (Pā=ā.048) with no parallel orientation (Pā=ā.002), whereas triple-negative breast cancer showed a rounder/more oval and parallel orientation.Quantitative morphological characteristics of breast cancers determined using DL-CAD correlated with histopathologic features and could provide useful information about breast cancer phenotypes.Copyright Ā© 2022 the Author(s). Published by Wolters Kluwer Health, Inc.