Pseudomembranous colitis, all are true except: (A) Toxin A is responsible for clinical manifestation, (B) Toxin B is responsible for clinical manifestation, (C) Blood in stools is a common feature, (D) Summit lesions are early histopathological finding
Answer is C. Blood in stools is not commonly seen in pseudomembranous colitis. Two high molecular weight exotoxins A and B are involved in the pathogenesis of the condition. Reference: Textbook of Microbiology; Anathanarayan and paniker's; 10th edition; Page no: 270