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': 'complication of acute sinusitis: \nSelect and explain. \nA. orbital cellulitis, B. Potts puffy tumor, C. Conjunctival chemosis, D. Subduram abscess', 'role': 'user'}, {'content': 'Answer: B \nExplanation: A,B,C and D mucocele and pyocele and pnuematocele are complications of chronic sinusitis. local complications of acute sinusitis: subperiosteal abscess osteomyelitis orbital cellulitis preseptal cellulitis post septal cellulitis orbital abscess cavernous sinus thrombosis maxillary sinusitis sphenoid sinusitis Systemic complications: Brain abscess meningitis toxic shock syndrome Ref Scott Brown 7/e,Vol 2,p 1539,1540.', 'role': 'assistant'}]