Risk factors

Risk factors for adenomyosis include:

• Prior uterine surgery, such as C-section, fibroid removal, or dilatation and curettage (D&C)
• Childbirth
• Middle age

Most cases of adenomyosis — which depends on estrogen — are found in women in their 40s and 50s. Adenomyosis in these women could relate to longer exposure to estrogen compared with that of younger women. However, current research suggests that the condition might also be common in younger women.