Only patients who sign informed consent will be included. Only patients wishing for future pregnancy will be involved in the study. Expected number of enrolled subjects is 160 ( 80 in each arm) Patients with endometrioma and planned surgery to remove it will be randomized either to laparoscopic sclerotherapy with 96% ethanol or cystectomy. First AMH sample will be taken day before surgery. If other endometriosis lesions (deep or superficial) are present, they may be also resected during this surgery.~Ethanol sclerotherapy description: classical laparoscopic approach - small (max1cm) fenestration of endometrioma - aspiration of endometrioma contents- foley catheter insertion- ballon inflation inside of the cyst- instillation with 96% ethanol which is left in the cyst for 10min- aspiration of ethanol and flushing with saline.~Cystectomy: classical laparoscopic approach- large fenestration of endometrioma - aspiration of endometrioma contents- indentification of ovary/ endometrioma tissue and plane between the ovarian capsule and cyst wall is developed using a mix of blunt and sharp dissection - if bleeding is present it is stopped by cautious bipolar coagulation~visit 1 - surgery time (AMH day before surgery, age, BMI, endometriosis extent, gravidity/ parity, endometriosis residue after surgery, pain levels) visit 2- 3 months after surgery : Ultrasound, complications, pregnancy, asissted reproduction, pain levels visit 3+4 - 6/12months after surgery: AMH, Ultrasound, complications, pregnancy, asissted reproduction, pain levels visit 5- 24 months after surgery: Ultrasound, complications, pregnancy, asissted reproduction, pain levels
The aim of this prospective randomized study is to compare laparoscopic sclerotherapy to cystectomy in following: AMH dynamics, endometrioma recurrence, complications, pregnancy rate, assisted reproduction methods success rate, live birth rate