Clinicians may offer postmastectomy radiation (RT) with regional nodal irradiation (RNI) and omit axillary lymph node dissection (ALND) in patients with clinically node-negative invasive breast cancer ...

A CT scan (also called a CAT scan) is a series of cross-sectional X-ray images of the body. Learn why a CT scan is performed and what to expect during one.

CT and MRI scans produce detailed images of the body. Learn the details and differences between CT scans and MRIs, and benefits and risks of each.