MRI of a pathologic mesorectal lymph node in a patient with rectal cancer

Axial T2-weighted pelvic MRI image of a node-positive rectal cancer. It shows a lymph node in the mesorectal fat at 7 o'clock that is abnormally enlarged (8 mm in short axis) and appears morphologically abnormal (arrow). The primary tumor is visible in the anterior mesorectum.