Concomitant Clostridium difficile colitis and cytomegalovirus colitis in an immunocompetent elderly female.

A 78-year-old Japanese woman with diarrhoea and abdominal pain was admitted for PCR test (PCR)-proven Clostridium difficile colitis. The patient's symptoms persisted despite multiple courses of antibiotics including intravenous metronidazole, oral  vancomycin and oral fidaxomicin. She underwent a stool transplant without improvement. Biopsies from a colonoscopy revealed concomitant cytomegalovirus (CMV) infection. The patient was immediately started on intravenous ganciclovir. Unfortunately, she developed sepsis secondary to colitis, and underwent definitive treatment with a total colectomy. Although CMV is a rare colonic pathogen in the immunocompetent patient, it should be considered in patients with severe or refractory C difficile colitis.