This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: ENT
[{'content': 'True statement about malignant otitis externa is: \nSelect and explain. \nA. Not painful, B. Common in diabetics and old age, C. Caused by streptococcus, D. All of the above', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Malignant otitis externa DEFINITION * Malignant otitis externa is an aggressive and potentially life-threatening infection of the soft tissues of the external ear and surrounding structures, quickly spreading to involve the periostium and bone of the skull base. NOMENCLATURE * Also called &;skull base osteomyelitis&; and &;necrotizing external otitis&; * It has been suggested that * necrotizing external otitis should be used for aggressive soft tissue infection in the absence of bony involvement * skull base osteomyelitis be used for the condition once bone infection is confirmed. * Malignant otitis externa is a misnomer as it is not a neoplastic process Common in diabetics and old age Ref : HAZARIKA 3RD ED.', 'role': 'assistant'}]