Coagulopathy | von Willebrand disease | Thrombocytopenia (due to idiopathic thrombocytopenic purpura, hypersplenism, chronic renal failure) | Acute leukemia | Anticoagulants | Advanced liver disease | Neoplasm | Endometrial hyperplasia or carcinoma | Uterine sarcoma | | Structural lesion | Uterine leiomyomas (fibroids) | Adenomyosis | Endometrial polyps | Other | Endometritis | Hypothyroidism | Intrauterine device | Hyperestrogenism | Endometriosis | |