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: Radiology
[{'content': 'Fir tree  appearance of bladder is seen in \nSelect and explain. \nA. Schistosomiasis, B. Neurogenic bladder, C. Tuberculosis, D. Pelvic abscess', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Neurogenic bladder is bladder dysfunction (flaccid or spastic) caused by neurologic damage. Symptoms can include overflow incontinence, frequency, urgency, urge incontinence, and retention.\nRisk of serious complications (eg, recurrent infection, vesicoureteral reflux, autonomic dysreflexia) is high.', 'role': 'assistant'}]