Figure 2 (a) A 52-year-old woman with adenoma malignum. (a) Axial oblique T2-weighted MRI shows heterogeneous cervical mass with cystic (arrow) and solid (arrowhead) components invading deep stroma. (b) A 52-year-old woman with adenoma malignum. (b) Apparent diffusion coefficient map shows restriction of solid component (arrowhead) but no restriction of cystic component (arrow). Presence of mixed cystic and solid components with stromal invasion is highly suggestive of adenoma malignum, which was confirmed at histopathologic examination.