Less reduction in serum AMH concentrations and antral follicle count (AFC) was observed when vaporising internal cyst walls using a CO2 laser as the source of energy compared with the excision of the cyst wall because the CO2 laser could vaporize only the filmy superficial internal lining up to 1.0 to 1.5 mm of the cyst wall [21]. This evidence concerns the gene AMH and cyst.