This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Urinary bladder, Subject name: Surgery
[{'content': 'All are seen in interstitial cystitis except: \nSelect and explain. \nA. Fever, B. Hematuria, C. Dysuria, D. Presence of linear bleeding ulcer in the fundus', 'role': 'user'}, {'content': "Answer: A \nExplanation: Interstitial cystitis (Hunner's ulcer)- Characterized by Chronic Pancystitis- Infiltration of lymphocytes and macrophages- MC in females- Etiology is unknown- Presence of linear bleeding ulcer in the fundus (involving mucosa)Clinical features- Initial symptom - Increased frequency- Pain increased by distention of bladder & relieved by micturition- Bladder capacity is reduced to 30 - 50mlDiagnosis- On Cystoscopy - presence of linear bleeding ulcer in fundus- To rule out malignancy:* Urinary cytology* BiopsyTreatment- Difficult and unsatisfactory- Bladder distention under anesthesia- Instillation of dimethyl-sulphoxide into the bladder", 'role': 'assistant'}]