Fig. 2.

Pretreatment and interim magnetic resonance (MR) images of two representative patients with T4N2M0 Stage IVA nasopharyngeal carcinoma. Their lymph nodes (LNs) were similarly sized before treatment. (A) The largest pretreatment LN was 24 mm (left). This LN measured 11 mm at the interim assessment (right). This patient remains alive without recurrence 62 months after therapy. (B) The largest pretreatment LN was 22 mm (left). This LN measured 19 mm at the interim assessment (right). This patient suffered multiple regional failures and died 9 months after treatment initiation.