• Key idea: Diverticulitis classically leads to dull LLQ pain, nausea/vomiting, alteration in bowel habits and bladder symptoms (sterile pyuria, dysuria, etc.) +/- tender LLQ mass
• Key idea: Diverticulitis treated with bowel rest and antibiotics (ciprofloxacin + metronidazole) and followed up 4-8 weeks later with colonoscopy (colonic malignancy can mimic the presentation and CT findings seen in diverticulitis)
• Key idea: Indications for surgery in setting of acute diverticulitis (1) Emergency operation (peritonitis, abscess, etc.) (2) Any patient who has survived 2 episodes of acute diverticulitis should have elective removal of affected area to prevent recurrence

https://step-prep.org/tutoring/

Diveritculitis, Crohns > UC; all 3 can cause fistula. In an elderly pt diverticulitis is way more likely than new onset IBD.