Lipomatous lesions of the uterus.

Four lipomatous lesions of the uterus are reported and the available literature from 1965 to 1976 is reviewed. It is suggested that these lesions result from metamorphosis of uterine smooth muscle which can proceed to form localised or diffuse mature adipose tissue in a leiomyoma or in the myometrium. Three terms are suggested for the nomenclature of the various morphological types of lipomatous lesions of the uterus: diffuse lipomatosis in a leiomyoma, circumscribed lipomatosis in a leiomyoma and uterine lipoma.