Effects of a fertility-sparing re-treatment for recurrent atypical endometrial hyperplasia and endometrial cancer: a systematic literature review
	    		
		   		
		   			
		   		
	    	
    	- Author:
	        		
		        		
		        		
			        		Isao MURAKAMI
			        		
			        		
			        		
			        			1
			        			
			        		
			        		
			        		
			        		
			        		;
		        		
		        		
		        		
			        		Hiroko MACHIDA
			        		
			        		;
		        		
		        		
		        		
			        		Tohru MORISADA
			        		
			        		;
		        		
		        		
		        		
			        		Yasuhisa TERAO
			        		
			        		;
		        		
		        		
		        		
			        		Tsutomu TABATA
			        		
			        		;
		        		
		        		
		        		
			        		Mikio MIKAMI
			        		
			        		;
		        		
		        		
		        		
			        		Yasuyuki HIRASHIMA
			        		
			        		;
		        		
		        		
		        		
			        		Yoichi KOBAYASHI
			        		
			        		;
		        		
		        		
		        		
			        		Tsukasa BABA
			        		
			        		;
		        		
		        		
		        		
			        		Satoru NAGASE
			        		
			        		
		        		
		        		
		        		
			        		
			        		Author Information
			        		
 - Publication Type:Original Article
 - From:Journal of Gynecologic Oncology 2023;34(4):e49-
 - CountryRepublic of Korea
 - Language:English
 - 
		        	Abstract:
			       	
			       		
				        
				        	 Objective:To examine the effectiveness of progestin re-treatment for recurrent endometrial intraepithelial neoplasia (EIN), atypical endometrial hyperplasia (AH) and endometrial cancer (EC) following initial fertility-sparing treatment. 
				        	
Methods:A comprehensive systematic review and meta-analysis were conducted by an Expert Panel of the Japan Society of Gynecologic Oncology Endometrial Cancer Committee. Multiple search engines, including PubMed/MEDLINE and the Cochrane Database, were searched in December 2021 using the keywords “Endometrial neoplasms,” “Endometrial hyperplasia,” “Endometrial intraepithelial neoplasia,” “Fertility preservation,” “Progestins,” AND “Recurrence.” Cases describing progestin re-treatment for recurrent EIN, AH and EC were compared with cases that underwent conventional hysterectomy. The primary outcomes were survival and disease recurrence, and the secondary outcome was pregnancy.
Results:After screening 238 studies, 32 with results for recurrent treatment were identified. These studies included 365 patients (270 received progestin re-treatment and 95 underwent hysterectomy). Most progestin re-treatment involved medroxyprogesterone acetate or megestrol acetate (94.5%). Complete remission (CR) following progestin re-treatment was achieved in 219 (81.1%) cases, with 3-, 6- and 9-month cumulative CR rates of 22.8%, 51.7% and 82.6%, respectively. Progestin re-treatment was associated with higher risk of disease recurrence than conventional hysterectomy was (odds ratio [OR]=6.78; 95% confidence interval [CI]=1.99–23.10), and one patient (0.4%) died of disease. Fifty-one (14.0%) women became pregnant after recurrence, and progestin re-treatment demonstrated a possibility of pregnancy (OR=2.48; 95% CI=0.94–6.58).
Conclusion:This meta-analysis suggests that repeat progestin therapy is an effective option for women with recurrent EIN, AH and EC, who wish to retain their fertility. 
            