Figure 17c. Adenomyosis treated with GnRH analog. (a) Sagittal T2-weighted image obtained before treatment shows adenomyosis in the posterior myometrium (arrows) with punctate hyperintense foci. (b) Sagittal T2-weighted image obtained after GnRH analog therapy shows that the lesion (arrows) is significantly smaller. The interface between the lesion and the myometrium is more discrete. (c) Sagittal T2-weighted image obtained 1 year after the end of treatment shows that the lesion (arrows) has returned to its pretherapy appearance.