Methicillin-resistant Staphylococcus Aureus Colitis Secondary to Complicated Acute Diverticulitis: A Rare Case Report.

A 33-year-old obese female with a recent diagnosis of acute diverticulitis (AD) was admitted to the hospital for severe abdominal pain, intractable nausea and vomiting, and diarrhea two days following oral antibiotic treatment for AD. Stool cultures collected upon her readmission were negative for Clostridium difficile (C. difficile) antigen and toxins A and B, but were notable for methicillin-resistant Staphylococcus aureus (MRSA). She was started on intravenous (IV) piperacillin/tazobactam, IV vancomycin, and an oral liquid vancomycin solution, which resulted in rapid resolution of her symptoms. Unfortunately, her symptoms recurred two weeks later and she eventually underwent laparoscopic low anterior resection (LAR) of her colon for continued diverticulitis. This resulted in complete and continued resolution of her symptoms.