Abstract: Primary ovarian leiomyoma is rare in clinic, especially with pregnancy, and treatment should be individualized, which will relate to better prognosis. The medical history, diagnosis, treatment process, pathological examination and follow-up results of one case of pregnancy complicated with primary leiomyoma of ovary admitted to the Second Hospital of Jilin University were analyzed, and the related literatures of ovarian leiomyoma and pregnancy complicated with ovarian leiomyoma were reviewed. By exploring the tissue origin, clinical manifestations, diagnosis, differential diagnosis and treatment of primary ovarian leiomyoma, we expect that the understanding of clinical workers on primary ovarian leiomyoma can be improved, and we can achieve the purpose of early detection, early diagnosis and early treatment.

Key words: Pregnant women, Leiomyoma, Ovarian neoplasms;, Case reports