Which instrument is used to examine the sigmoid colon by inserting a flexible tube through the anus?

Which instrument is used to examine the sigmoid colon by inserting a flexible tube through the anus?

• A. Endoscope
• B. Sigmoidoscope
• C. Colonoscope
• D. Proctoscope

Answer: (B)

When you want to look at the sigmoid colon through the anus, the instrument designed for that specific region is a sigmoidoscope. It’s a shorter, flexible endoscope that lets you visualize the sigmoid colon and the distal part of the colon to check for polyps, inflammation, or other abnormalities. A full colonoscope is longer and used to examine the entire colon, not just the sigmoid portion. A proctoscope is typically used to view the rectum and is usually rigid, not the flexible instrument described. An endoscope is a general term for viewing devices, but the instrument specifically used for the sigmoid region via the anus is the sigmoidoscope.

When you want to look at the sigmoid colon through the anus, the instrument designed for that specific region is a sigmoidoscope. It’s a shorter, flexible endoscope that lets you visualize the sigmoid colon and the distal part of the colon to check for polyps, inflammation, or other abnormalities. A full colonoscope is longer and used to examine the entire colon, not just the sigmoid portion. A proctoscope is typically used to view the rectum and is usually rigid, not the flexible instrument described. An endoscope is a general term for viewing devices, but the instrument specifically used for the sigmoid region via the anus is the sigmoidoscope.