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: Pediatrics
[{'content': 'Unilateral renal agenesis is associated with – \nSelect and explain. \nA. Polycystic disease of pancreas, B. Hiatus Hernia, C. Single umbilical artery, D. Hypogonadism', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Malformations associated with unilateral renal agenesis\n\nSingle umbilical artery \xa0 \xa0 \xa0 \xa0 \xa0 \xa0 \xa0\xa0\nAbsent ureter\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\nControlateral vesicoureteric reflux\nAbsent Ipsilateral vas defrens\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\xa0\n\nBilateral renal agenesis\n\nIt is incompatible with extrauterine life, death occurs shortly after birth from pulmonary hypoplasia.\nIt is also known as Potter syndrome.', 'role': 'assistant'}]