Fig 2. A 23-year-old man with ameloblastoma at the right mandible. A, Axial fat-suppressed (SPIR) T2-weighted image (TR, 3000 ms; TE, 90 ms) obtained by a 4.7-cm microscopy coil shows the tumor (arrowheads) with high signal intensity in the mandibular ramus. A solid lesion (arrow) is also observed. B, Axial contrast-enhanced T1-weighted image (TR, 550 ms; TE, 10 ms) shows the tumor (arrowheads) with clear definition between solid (arrow) and nonenhancing lesions. C, Axial color ADC map shows the tumor (arrowheads) consisted of nonenhancing lesion with high ADC (2.67 x 10^–3 mm²/s) and a solid lesion (arrow) with intermediate ADC (1.50 x 10^–3 mm²/s). Two broken lines indicate irregular regions of interest placed in solid (small) and nonenhancing (large) lesions. D, Photomicrograph shows large nonenhancing lesion (*) associated with solid lesion containing follicular pattern of tumor cell proliferation with varying degrees of cystic degeneration in tumor islands. Original magnification x1.