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: Radiology
[{'content': 'A\xa0 24 year old male presents to the clinic for routine checkup. On routine radiograph, supernumerary teeth are seen. General examination reveals hypermobility of shoulders and Gorlin sign is absent.\xa0What is the most probable diagnosis? \nSelect and explain. \nA. Sturge Weber Syndrome, B. Marie-Sainton Disease, C. Hallerman-Streiff syndrome, D. Ehlers Danlos Syndrome', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Cleidocranial Dysplasia (Marie and Sainton’s disease, Scheuthauer-Marie-Sainton syndrome, mutational dysostosis)\nAbsence of clavicle causes unusual mobility of the shoulders\xa0with the tendency of the patients to bring their shoulders\xa0forward till they meet in the midline. Cleidocranial dysplasia is a syndrome of unknown cause. It is usually transmitted as an autosomal dominant trait.\nGorlin sign: It is the ability to touch the tip of the nose with the tongue. It is present in Ehlers-Danlos syndrome.', 'role': 'assistant'}]