This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Impoant Genetic Syndromes, Subject name: Pediatrics
[{'content': 'Which of the following is true about Turner syndrome? \nSelect and explain. \nA. Webbed neck has 10 times more risk of congenital hea disease, B. If webbed neck is present, AR absent, C. Male Turner (Noonan) has higher risk of cardiac diseases, D. Webbing of fingers and toes is associated with visceral anomalies', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Discussing about options one by one, 1. False; Incidence of congenital hea disease was 30% in those with webbed neck and 9% of those with normal neck 2. False 3. True; Cardiac disease is seen in almost 80% of individuals with Noonan syndrome; Noonan syndrome is one of the most common genetic diseases associated with congenital hea defect, being second for frequency only to Down syndrome. 4. False; No such association seen till now.', 'role': 'assistant'}]