Which symptom should prompt immediate clinical evaluation for possible colorectal pathology rather than routine reassurance?

• A. New-onset rectal bleeding or a persistent change in bowel habits (e.g., unexplained chronic constipation or diarrhea) — warrants prompt investigation.
• B. Intermittent mild bloating relieved by defecation that has been present for many years without change — this chronic pattern alone typically requires immediate colonoscopy for malignancy exclusion.
• C. Occasional heartburn after spicy meals — this is a cardinal sign of colorectal cancer and should trigger urgent colonoscopy in all patients.
• D. Seasonal nasal congestion and sore throat during cold months — directly indicative of colorectal pathology and necessitates GI referral.

Answer: (A)