a, b. Parametrial spread in locally advanced cervical cancer. Axial T2-weighted images (a, b) show uterine cervix neoplasm invading bilateral proximal lateral parametria (a,
black arrows) and the left posterior parametrium (a,
white arrow); distally, invasion of the ureteral tunnel (b,
black arrow) as well as invasion of the left anterior parametrium (b,
white arrow) are also shown. n, cervical cancer.