This is a contiguous series of sagitally reformatted CT slices of the same 28y old man whose axial and coronal slices are shown in the previous sets of images. The first slice is most leftward, and the series progresses to the patient's right. You can scan through the series either by (1) positioning the cursor over the image, holding down the left mouse button, then sliding the cursor up or down the image, or (2) hitting the keyboard keys > and < (no shift required). Scan through the slices and try to identify the structures to which lines are drawn. The answers will be revealed when you click on the appropriately labelled drop-down arrows below the image.