A nurse is caring for a client who has diverticular disease. When palpating the client’s abdomen, in which of the following locations should the nurse expect the client to report abdominal pain?

Diverticular disease most commonly affects the sigmoid colon, which is located in the lower left quadrant of the abdomen. Diverticula are small, pouch-like herniations that form in weakened areas of the colon wall, and they develop most frequently in the sigmoid colon due to the higher intraluminal pressure generated in that segment. When these pouches become inflamed or infected — a condition called diverticulitis — the client typically reports cramping and tenderness localized to the lower left quadrant. This is the expected finding during abdominal palpation. The lower right quadrant is associated with the appendix, terminal ileum, and cecum; pain there would more likely suggest appendicitis, ileitis, or Crohn's disease. The upper left quadrant contains the stomach, spleen, and tail of the pancreas; pain in this location would suggest pathology involving those structures. The upper right quadrant houses the liver, gallbladder, and head of the pancreas; right upper quadrant pain is characteristic of cholecystitis, hepatitis, or pancreatitis. Understanding the anatomical distribution of the colon and where diverticula preferentially form is essential for accurately anticipating and interpreting the physical examination findings in clients with diverticular disease.