Uterus myomatosus is the enlargement of the uterus due to several uterine myomas.ICD-10 code: D25.9 - Leiomyoma of the uterus, unspecifiedMyomas are one of the most common tumors in women. Postmortem, myomas can be shown in one in four women above the age of 30. The peak incidence is between the age of 35 and 45. They are more common in nulliparae than in women with children.The causes are unclear, but it was shown that estrogen functions as a growth stimulant. For this reason, there is rapid growth during pregnancy whereas regression can be observed in postmenopausal women. In children and postmenopausal women there is no new formation of myomas.Immature muscle cells near blood vessels seem to be the tissue of origin for myomas. Myomas consisting mainly of connective tissue are called leiomyofibromas.Source: Gloecknerd via wikipedia
