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: Pathology
[{'content': 'Most constant and persistent feature of Ca bladder is - \nSelect and explain. \nA. Haematuria, B. Frequency, C. Dysuria, D. Abdominal lump', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., Haematuriao Painless Hematuria is the most common presenting symptom. It may be gross or microscopic, intermittent rather than continuous.Symptoms of vesical irratibility are second most common --> Frequency, urgency, dysuria.Pain may occur rarely due to secondary clot retention, tumor extension into retroperitoneum, ureteric obustruction or metastasis to bony pelvis.", 'role': 'assistant'}]