Surgery All are precancerous for carcinoma bladder except -a) Tuberculosis bladderb) Aniline dyesc) Schistosomiasisd) Chronic ulcer A b B ad C ac D ab 💡 Explanation All are precancerous for carcinoma bladder except -a) Tuberculosis bladderb) Aniline dyesc) Schistosomiasisd) Chronic ulcer ✓ Correct Answer: B. ad