Question

A 58-year-old with longstanding ulcerative colitis complains of altered bowel habits, weight loss, and rectal bleeding. Colonoscopy reveals a suspicious mass. Which investigation is definitive for diagnosing colorectal cancer?

Accepted Answer

Biopsy of the lesion

Answer

Faecal occult blood testing (FOBT)

Answer

CT scan of the abdomen and pelvis

Answer

MRI scan of the pelvis

Answer

Barium enema

Practice question

A 58-year-old with longstanding ulcerative colitis complains of altered bowel habits, weight loss, and rectal bleeding. Colonoscopy reveals a suspicious mass. Which investigation is definitive for diagnosing colorectal cancer?