Hi Thanks for asking HCM I have gone through your Query. Vitamin D helps in calcium balance which helps against adenomyosis, but you condition is adenomyoma benign tumor of uterus. An adenomyoma is usually benign and does not cause symptoms, though an especially large growth may cause discomfort, tenderness, and heavy bleeding during menstrual periods. Treatment usually involves taking pain medications and using contraceptives to reduce menstrual problems. If it is large and causing anemia or bleeding then surgery is an indication. Let me know if you have any further query. Have a nice day.