Abstract
A case of myxoid leiomyosarcoma (MLS) of the uterus associated with pregnancy was revealed by histopathological examination. The patient, 38 years old and married, was at thirteen-weeks of gestation. A large abdominal tumor was observed by ultrasonography. Diagnosed as a subserosal leiomyoma, the tumor was enucleated. Histology showed it to be a leiomyomatous tumor with intensive mucous changes and low grade malignancy. The tumor showed partial infiltrative proliferation with slight nuclear mitosis (1-4/10 HPF) . After enucleation the patient was well and delivered a normal baby by cesarean section at 40-weeks of gestation. Recurrence was revealed in the specimen biopsied after derivation. More than ten cases of MLS have been reported in the literature and the entity of this tumor may be determined by more intensive examination.