Colectomy vs. Gastric Surgery: Distinct Procedures

Colectomy is surgical resection of part or all of the colon (large intestine). Indications: colon cancer, diverticulitis, ulcerative colitis, Crohn’s colitis, ischemia, volvulus, severe obstruction.

Gastric procedures involve the stomach (e.g., gastrectomy, sleeve gastrectomy, bypass, pyloroplasty). They address peptic ulcer disease, gastric cancer, obesity, gastroparesis.

The two are anatomically and physiologically distinct. Colectomy affects water/electrolyte absorption and stool formation; gastric surgery alters acid secretion, reservoir capacity, and hormonal signaling (ghrelin, GLP-1).