Which projection is specifically used to distinguish a lesion's location relative to the nipple?

The craniocaudal projection (CC) is specifically utilized in mammography to evaluate the breast in a way that allows for the precise localization of lesions in relation to the nipple. This projection involves positioning the breast flat against the image receptor and taking the X-ray beam from above (cranial) down toward the nipple (caudal). This technique helps in creating a clear image of the breast tissue while also providing valuable information about the orientation and distance of any abnormalities or lesions from the nipple.

The craniocaudal view is instrumental in establishing whether a lesion is medial (toward the center of the body) or lateral (toward the side) compared to the nipple. This information is crucial for accurate diagnosis and potential surgical planning since it helps guide further imaging or interventions.

Other projections serve different purposes. For instance, the medial projection specifically focuses on medial aspects of the breast but may not provide the same clarity in relation to the nipple as the CC. The lateromedial projection offers insights into the lateral aspects but is less effective for understanding the lesion's position with respect to the nipple. The maximal compression projection is used to enhance visualization of any potential overlapping structures but does not directly measure a lesion's location relative to the nipple.