This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nose and paranasal sinuses, Subject name: ENT
[{'content': 'The complication of trauma to the danger area of the face among the following is \nSelect and explain. \nA. Cavernous sinus infection, B. Meningitis, C. Visual loss, D. Loss of memory', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The area of the upper lip and the lower pa of the nose is the danger area of the face. It is due to that this area is the common site of infectionThis area is drained by facial vein which communicates with the cavernous sinus through the superior ophthalmic vein and pterygoid venous plexus through the emissary veinIn case of any infection of this area, it may spread to the cavernous sinus causing infection and/or thrombosisRef: PL Dhingra, Diseases of Ear, Nose & Throat, 7th edition, pg no. 225 - 226', 'role': 'assistant'}]