This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney and ureter, Subject name: Surgery
[{'content': 'Earliest and often the only presentation of TB kidney is: \nSelect and explain. \nA. Increased frequency, B. Pain, C. Hematuria, D. Renal calculi', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Clinical Features Earliest symptom is urinary frequency. Tuberculosis of genital tract should be considered in the presence of following situations Chronic cystitis that refuses to respond to adequate treatment Sterile pyuria, gross or microscopic hematuria. Non- tender enlarged epididymis with beaded or thickened vas. Chronic draining scrotal sinus. Induration or nodulation of prostate and thickening of one or both seminal vesicle.', 'role': 'assistant'}]