[Plexiform tumor of the uterus].

Uterine plexiform tumors are morphologically distinctive lesions. Usually they are incidental microscopic findings in hysterectomy specimens that have been removed for other reasons. The rarity and the complex histomorphology of the small intramyometrial tumors may cause confusion in the diagnosis. In the reported case immunohistochemistry was performed. The results point to the disputed histogenesis that plexiform tumors are of smooth muscle origin. All plexiform tumors reported in the literature showed a benign clinical course; also in cases with intravascular extension as in intravascular leiomyomatosis.