[A case of intravenous leiomyomatosis of the uterus in pregnancy].

A description of one case: 32-year-old woman with undiagnosed pregnancy (2-3 months) was operated on for uterine intravenous leiomyomatosis falsely diagnosed by gynecologists as sarcoma. This benign tumor is a rare condition with a characteristic morphology and must be distinguished from another relative tumour of the uterus--so-called metastasizing benign leiomyoma.