Leiomyoma uteri is the commonest mesenchymal neoplasia of this organ. Leiomyosarcoma uteri is the most frequent histologic variant of all sarcomatous forms. Among these there is bizarre leiomyoma, a borderline lesion with potential malignity, whose differential diagnosis is very difficult. This paper reports the case of a 44 year old woman who was simultaneously diagnosed with these anatomicoclinical lesions. The singularity of this case is represented by the coexistence in the same patient of three different lesions that, according to our data and those reported in the latest literature, do not seem to be correlated.