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. 2021 Jul 30;31(2):323–332. doi: 10.1055/s-0041-1734342

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Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

This is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License, which permits unrestricted reproduction and distribution, for non-commercial purposes only; and use and reproduction, but not distribution, of adapted material for non-commercial purposes only, provided the original work is properly cited.

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Fig. 2 — A 33-year-old-woman with a right breast lump. ( A ) Digital mammogram, right CC, and MLO views demonstrated heterogeneously dense breast (ACR type C) with no obvious abnormality. ( B ) High-resolution ultrasound showed an 11-mm non-circumscribed irregular hypoechoic mass ( arrows ) in subareolar right breast which subsequently yielded invasive ductal carcinoma on histopathology and ER/PR positive, HER-2neu negative on immunohistochemistry examination. ACR, American College of Radiology; CC, craniocaudal; ER, estrogen receptor; PR, progesterone receptor; HER, human epidermal growth factor; MLO, mediolateral oblique; PR, progesterone receptor.