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': "Attacks of flushing and cyanosis occur in which type of ovarian tumors : \nSelect and explain. \nA. Struma ovarii, B. Krukenberg's tumor, C. Arrhenoblastoma, D. Carcinoid tumors of ovary", 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. is d i.e. Carcinoid Tumor Carcinoid tumour of Ovary : It is sometimes primary and sometimes metastatic. Also called Argentaffinoma Occurs as a malignant change in benign dermoid cyst. Presence of solid yellow tumour with histological propey of reducing silver salts derived from specialized Kultchitsky cells of intestine. It produced 5 - HT which causes attacks of flushing and cyanosisdeg', 'role': 'assistant'}]