<prompt> A 74-year-old woman presents with 3 weeks of left lower quadrant abdominal pain, changes in bowel habits, and intermittent fever. Her temperature is 38degC 101degF, respirations are 19 per minute, and blood pressure is 13080 mm Hg. Physical examination shows left lower quadrant tenderness. A CBC reveals neutrophilia. An abdominal-pelvic ultrasound examination is normal. Which of the following is the most likely diagnosis?AppendicitisDiverticulitisOvarian carcinomaRenal colic  <response>: Diverticular disease refers to two entities: a condition termed diverticulosis and an inflammatory complication called diverticulitis. Diverticulosis is generally asymptomatic. Diverticulitis results from the irritation caused by retained fecal material that obstructs the lumen of a diverticulum. Clinically, the most common symptoms of diverticulitis usually follow microscopic or gross perforation of the diverticulum. Diverticula are most common in the sigmoid colon, which is affected in 95 of cases. Peritonitis and sepsis are serious complications. Appendicitis choice A usually presents with right lower quadrant pain. None of the other choices presents with gastrointestinal symptoms and fever.Diagnosis: Diverticulitis 