MRI
Ill-defined soft tissue mass distending the uterine cavity with indistinct interface with the myometrium, eliciting an iso-to high signal on T1, heterogeneous signal on T2 with moderate heterogeneous enhancement on postcontrast sequence.
Focal thickening of the endometrium-myometrium junctional zone at posterior corporeal region (thickness = 20 mm), seen as an ill-defined area of intermediate signal on T1 and low signal on T2 in keeping with focal adenomyosis.