Chest computed tomography (CT) is routinely used for the evaluation of diseases of the chest involving the lung, mediastinum, pleura, chest wall, and diaphragm. Benign and malignant breast lesions are not uncommonly encountered incidentally on chest CT. The chest CT radiologist should be aware of the different breast pathologies and their CT appearances as some can be diagnosed by chest CT, whereas others, such as breast cancer, should not be overlooked. The purpose of this pictorial essay is to show various common and uncommon breast conditions encountered while interpreting chest CT scans in our daily practice.