This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Gynaecology & Obstetrics
[{'content': 'Long term tamoxifen therapy may cause : \nSelect and explain. \nA. Endometrium Ca, B. Ovary Ca, C. Cervix Ca, D. Vagina Ca', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. is a i.e. Endometrium cancer Long term Tamoxifen therapy is a predisposing factor for Endometrial hyperplasia and cancers. For more details, refer answer 6 Also know : Malignancies caused by Long Term Tamoxifen therapy : Carcinoma endometrium - it is the most common carcinoma associated with it. Uterine sarcoma. Rarely liver cancer with long term high dose. Non Malignant effects of Tamoxifen on uterus : Endometrial hyperplasia Endometriosis Fibroid uterus Ovarian cysts Menstrual irregularities or Amenorrhea.', 'role': 'assistant'}]