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: ENT
[{'content': 'Von Langenbeck repair is used for treatment of: \nSelect and explain. \nA. Cleft lip, B. Cleft palate, C. Septal detion, D. Saddle nose', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Von Langenbeck Repair: Two-stage palate repairs were originally described as a means of treating wide clefts; soft palate repair was done at the same time as lip repair, with the hard palate repaired later after the cleft width had diminished. In a way, this is analogous to lip adhesion; the surgeon is committed to a second operation and has additional scar to confront at the time of the second procedure. The use of two-stage palate repair has consistently been shown to produce poorer speech results when compared with most single-stage techniques, but is still used by some surgeons.', 'role': 'assistant'}]