In an unfolding case of suspected breast malignancy, which diagnostic test is typically first to evaluate the concern?

• A. Ultrasound
• B. Mammogram
• C. Colonoscopy
• D. CT scan

Answer: (B)

When a breast lump or other sign raises concern for malignancy, the first imaging step is a mammogram. This specialized X-ray view of the breast is designed to detect abnormalities such as masses, distorted tissue, and suspicious calcifications, which can be present even before a lump is felt. It also provides a baseline image for future comparison and helps guide further diagnostic steps. In many cases, if the mammogram shows a lesion or if the breast tissue is very dense, an ultrasound may be added to further characterize the area—distinguishing solid from cystic structures and assessing the lesion’s characteristics. Tests like colonoscopy or CT scan aren’t used first in evaluating a breast lump; colonoscopy screens the colon, and CT is typically used for broader staging or evaluating spread, not as the initial diagnostic test for a breast concern.