Figure 9a. Atypical polypoid adenomyoma in a 42-year-old woman. (a) Sagittal T1-weighted image shows a pedunculated polypoid mass projecting into the cervical canal (arrows). The mass has intermediate signal intensity and contains a large hyperintense cyst (arrowheads), which represents hemorrhage. (b) Sagittal T2-weighted image shows that the polypoid mass has slightly high signal intensity (arrows); the embedded cyst is hyperintense (arrowheads). (c) Photograph of the histopathologic slide shows the polypoid mass and the relatively large but deflated cyst (arrowheads), which correlates with the hemorrhagic cyst seen on the MR images.