Greater decrease of serum AMH levels after surgical excision of dermoid cysts which indicates greater ovarian parenchymal damage in comparison to serous and mucinous cystadenomas may lie behind the fact that the cyst walls of dermoid cysts are more adherent to underlying ovarian parenchyma and aggressive tractions for their detachment from the ovarian tissue causes greater traumatic damage to healthy parenchyma. This evidence concerns the gene AMH and cyst.