New diverticulitis guideline challenges routine antibiotics and follow-up colonoscopy

Clinical takeaway: For immunocompetent, clinically stable patients with acute uncomplicated diverticulitis, routine antibiotics are no longer recommended. The guideline also supports considering rifaximin or mesalamine for symptomatic uncomplicated diverticular disease and suggests against routine follow-up colonoscopy after a first uncomplicated episode.

An international collaboration led by the European Association for Endoscopic Surgery (EAES) and the Society of American Gastrointestinal and Endoscopic Surgeons (SAGES) has issued updated guidance addressing several longstanding controversies in diverticular disease management. Drawing on a systematic review of 27 studies, the panel issued recommendations covering symptomatic uncomplicated diverticular disease (SUDD), uncomplicated diverticulitis, and complicated diverticulitis.

Among the most notable medication-related recommendations, the panel suggests rifaximin or mesalamine for patients with SUDD rather than supportive care alone. The recommendation is based on low-certainty evidence showing reductions in abdominal pain and bloating, although effects on recurrence were modest.

For acute uncomplicated diverticulitis, the guideline recommends against routine antibiotic treatment in immunocompetent, clinically stable patients. The authors found no clear evidence that antibiotics reduce readmissions or recurrence, while avoiding antibiotics may lessen treatment burden and cost.

The update also favors elective resection over observation for patients with persistent symptoms after recurrent uncomplicated diverticulitis. Trial data suggest surgery can substantially reduce recurrence and improve quality of life, though the recommendation remains conditional because evidence for some surgical outcomes remains limited.

Another practice-changing recommendation addresses post-diverticulitis surveillance. The panel suggests against routine follow-up colonoscopy after a first episode of uncomplicated diverticulitis, citing very low-certainty evidence that rates of colorectal cancer and advanced adenomas are similar to those seen in standard screening populations. Decisions should still account for factors such as patient age, recent colonoscopy history, and recurrent episodes.

For patients who recover from a first episode of diverticulitis complicated by an abscess, the guideline conditionally favors elective resection over surveillance. The recommendation reflects evidence showing a meaningful reduction in recurrence risk, although the authors emphasize that many patients will not experience recurrence and that treatment decisions should be individualized. Frail and immunocompromised patients were excluded from this recommendation.

The update also endorses prior EAES guidance on operative management of complicated diverticulitis. When colorectal surgical expertise is available and septic shock is absent, sigmoid resection with primary anastomosis, with or without diverting ileostomy, is preferred over Hartmann's procedure or laparoscopic peritoneal lavage. Hartmann's procedure remains favored for patients with septic shock, frailty, immunocompromise, or when specialized colorectal expertise is unavailable.

The authors emphasized the importance of shared decision-making throughout the guideline, noting that “clinicians and patients should apply tailored decisions based on their clinical situation and personal values and preferences.”

What's changed

• Suggests rifaximin or mesalamine for symptomatic uncomplicated diverticular disease, a more favorable stance than many earlier guidelines.
• Recommends no routine antibiotics for immunocompetent, clinically stable patients with acute uncomplicated diverticulitis.
• Supports elective resection for patients with persistent symptoms after recurrent uncomplicated diverticulitis.
• Suggests against routine follow-up colonoscopy after a first uncomplicated diverticulitis episode.
• Recommends considering elective resection after recovery from diverticulitis complicated by an abscess because of recurrence risk reduction.

Source: Huo B, et al. (2026 Oct 14) Surg Endosc. EAES-SAGES Clinical Practice Guideline Update: Multi-Society Recommendations on Key Controversies in the Management of Diverticular Disease