Fig. 24

A 62-year-old female patient with pain and swelling in the left side of the neck, fever, and history of larynx cancer treated with RT. Axial high b-value (b = 1000) DWI (a), ADC map (b), and post-contrast gradient-echo fat-suppressed T1-weighted (c) images show an enlarged left laterocervical lymph node (arrows), with very low ADC values (b) and no contrast enhancement (c) due to the purulent content of suppurative lymphadenitis