Patients who underwent appendectomy for appendicitis and mesenteric lymphadenitis had a low risk of ulcerative colitis (for patients with perforated appendicitis, the adjusted hazard ratio was 0. ...

Appendectomy and Protection against Ulcerative Colitis Published July 19, 2001 N Engl J Med 2001;345: 222 - 224 DOI: 10.1056/NEJM200107193450316 ...

All of them received the usual standard care. Half also had an appendectomy. A year later, the relapse rates were 36% in the appendectomy group and 56% in the usual-care group, the researchers said.

The overall risk ratio (RR) for the percentage of successful treatment for appendicitis at follow-up did not differ between the antibiotic group and the appendectomy group (0.85; 95% CI, 0.66-1.11).

Cost of appendectomy averages $33,000 in the U.S., but can range from $1,500 to $180,000 according to 2012 study ...

Fees for a routine appendectomy in California can range from $1,500 to $182,955, a new study suggests. Researchers found wide variations in charges even among patients treated at the same hospital.