Yes. Changes in the breast during breastfeeding do reduce the accuracy of screening tests (like mammography or MRI). Unless the patient plans to be breastfeeding for more than one to two years and is at high risk, it is generally recommended to wait at least a few months after breastfeeding stops before resuming breast screening. Ultrasound is usually performed first if a patient is breastfeeding and there is a concern about breast symptoms. If a breastfeeding woman needs to undergo breast imaging, it is advisable to nurse or pump immediately before the exam.
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