AMH and cyst: Kitajima et al. reported that the decline of serum AMH levels within 3 months after surgery was significantly greater in women with an excised cyst wall that contained normal ovarian tissue than in women without healthy ovarian tissue in the excised cyst wall (42.0 ± 32.9% vs. 8.9 ± 13.4%; P = 0.01) [31].