Table 1.

Incidence of occult uterine sarcoma and uterine leiomyosarcoma after surgery presumed uterine fibroid

Author	Year published	Study period	Number of patients	Number of uterine sarcoma	Uterine sarcoma rate	Number of uLMS (cases)	uLMS rate
Pritts et al.[6]	2015	1990-2014	NR	NR	NR	1 in 1960	0.051
Brohl et al.[7]	2015	1980-2014	-	6/2075	0.28	18/10,120	0.17
Bojahr et al.[8]	2015	1998-2014	10,731	6	0.06	2	0.02
Lieng et al.[9]	2015	2000-2013	4791	NR	NR	6	0.13
Cormio et al.[10]	2015	2000-2010	588	NR	NR	3	0.5
Tan-Kim et al.[11]	2015	2001-2012	941	6	0.6	3	0.3
Paul et al.[13]	2016	2004-2014	2678	8	0.29	5	0.17
Graebe et al.[12]	2015	2005-2014	1361	4	0.29	3	0.22
Zhang et al.[14]	2016	2009-2013	3021	18	0.6	5	0.17
Tan et al.[16]	2015	2009-2015	734	2	0.27	2	0.27
Rodriguez et al.[15]	2016	2002-2011	13,964	NR	NR	NR	0.13
Gao et al.[17]	2016	2005-2014	3986	59	1.4	17	0.4
Chin et al.[21]	2016	2004-2013	3013	3	0.1	2	0.06
Raine-Bennett et al.[18]	2016	2006-2013	34,728	125	0.36	81/34,706	0.23
Lee et al.[19]	2016	2006-2014	NR	45	NR	18	NR
Mettler et al.[20]	2017	2003-2015	2269	6	0.26	4	0.17

NR: Not reported, uLMS: Uterine leiomyosarcoma