Common multiple primary cancers associated with breast and gynecologic cancers: A reviewAuthors： Shuwen Ge1,2, Xiaoxin Ma1,2*Affiliations： 1.Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People’s Republic of China.2.Key Laboratory of Obstetrics and Gynecology of Higher Education of Liaoning Province, Shenyang, China.*Corresponding Author： Xiaoxin Ma. Email: maxx@sj-hospital.orgDepartment of Obstetrics and Gynecology, Shengjing Hospital of China Medical University. Mail address: Shengjing Hospital of China Medical University, No 39 Huaxiang Road, Tiexi District, Shenyang 110000，Liaoning, People’s Republic of China.Tel: 86-189-0400-1666Running Title: Breast and gynecologic multiple primary malignancies