This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Tumours of Nose and Paranasal Sinuses, Subject name: ENT
[{'content': 'A 1 year old child was brought to OPD with soft ,compressible swelling on nose which increases on Coughing. Which of the following is most likely the diagnosis? \nSelect and explain. \nA. Ethmoid cyst, B. Meningoencephalocele, C. Lacrimal sac cyst, D. AV malformation', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Nasal Meningoencephalocele Brain tissue herniates along with its meninges herniates through a bony defect C/F: Soft,cystic,compressible,translucent subcutaneous swelling present at: Root of nose Side of nose Anteromedial aspect of the orbit Swelling show cough implulse (Positive Frustenberg test) and may be reducible Ix -CT/MRI: Rx- Cut the tumor stalk from the brain and repairing the bony defect', 'role': 'assistant'}]