Colon Cancer vs. Diverticulitis: Recognizing Overlapping Symptoms

Both conditions cause left lower quadrant pain, bowel changes, and rectal bleeding—but key differences exist:

Feature	Diverticulitis	Colon Cancer
Pain	Acute, severe, localized (LLQ)	Chronic, vague, progressive
Fever	Common (infectious)	Rare unless obstruction/perforation
Bleeding	Occasional, often brisk	Often occult, chronic
Weight loss	Uncommon	Common (advanced)
Mass	Sometimes (phlegmon/abscess)	Often palpable (advanced)

Critical: Both can coexist. Colonoscopy is gold standard for differentiation. CT abdomen/pelvis for acute diverticulitis. Never assume—always investigate.