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': 'Bilateral metastatic ovarian tumor from gastrointestinal malignancies is known as: \nSelect and explain. \nA. Theca cell tumour, B. Fibromas, C. Granulosa cell tumour, D. Krukenberg tumor', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Malignant tumors that metastasize to the ovary are almost invariably bilateral. The term Krukenberg tumor refers to a metastatic mucinous/signet ring cell adenocarcinoma of the ovaries that typically originates from primary tumors of the intestinal tract, characteristically the stomach. Ovarian metastases often represent a late disseminated stage of the disease in which other hematogenous metastases are also found Ref: Hoffman B.L., Schorge J.O., Schaffer J.I., Halvorson L.M., Bradshaw K.D., Cunningham F.G., Calver L.E. (2012). Chapter 35. Epithelial Ovarian Cancer. In B.L. Hoffman, J.O. Schorge, J.I. Schaffer, L.M. Halvorson, K.D. Bradshaw, F.G. Cunningham, L.E. Calver (Eds), Williams Gynecology, 2e.', 'role': 'assistant'}]