“…The tumour marker CA-125 is usually within normal values or mildly increased ( Rasmussen, 1997 , Tanaka et al, 2018 , Kaur, 2014 ). The International Federation of Gynecology and Obstetrics (FIGO) classification and TNM Classification staging system are utilized to determine the appropriate management ( Arslan, 2011 , Tanaka et al, 2018 , Furutake et al, 2017 ). The stage and the size of the tumour and the mitotic index impact the prognosis ( Pankaj et al, 2013 , Bouie, 2005 ), however, as in other gynecological sarcomas, primary ovarian leiomyosarcoma are not routinely graded.…”