Which procedure visualizes the anal canal and lower rectum for diagnosing hemorrhoids or fissures?

• A. Anoscopy
• B. Proctoscopy
• C. Sigmoidoscopy
• D. Colonoscopy

Answer: (A)

Focusing on the region where hemorrhoids and fissures occur, you want a tool that directly examines the anal canal. Anoscopy uses a short, specialized instrument inserted into the anal canal to provide a close, direct view of the mucosa at that level. This makes it ideal for diagnosing internal hemorrhoids, fissures, and other anorectal lesions with a quick, targeted exam.

While proctoscopy can visualize the anal canal and a bit of the lower rectum, anoscopy is the more focused option for the anal canal itself. Sigmoidoscopy and colonoscopy look further up the rectum and colon, which isn’t necessary for evaluating hemorrhoids or fissures. So, the best choice for visualizing the anal canal and lower rectum in this context is anoscopy.