*7.2.2 Ablation of adenomyosis using high-intensity focused ultrasound (HIFU)*

High-intensity focused ultrasound (HIFU) ablation, which was initially developed for the treatment of solid tumors, is now successfully implemented in the treatment of uterine fibroids and adenomyosis [21–23]. Several prospective studies have demonstrated ranges of effectivity between 81 and 87% [21–24]. After HIFU therapy, MRI showed the diffuse adenomyosis in **Figure 4(a)** and the nonperfused area of the lesion without damage to the surrounding normal tissue in **Figure 4(b)**. Rarely serious complications including major permanent injuries were observed. Ultrasound-guided HIFU ablation may be a safe and effective noninvasive alternative in the treatment of symptomatic adenomyosis.
