Figure 4
(a) Diagram demonstrating pathways of lymphatic spread in rectal cancer. (b) CT scan showing a T3 rectal cancer. Two pararectal lymph nodes (6 mm in diameter) are shown. (c) T2-weighted MR image also showing a T3 primary rectal cancer. Note: 6 mm pararectal lymph node on the right. (d) Coronal image in the same patient showing an 8 mm lymph node in the presacral space (arrow). (e) Sagittal MR image in the same patient showing the same presacral node (arrow) and another enlarged node inferior to this.