After a week of abdominal pain, fever, and diarrhea, 42-year-old Mr. Kiet sought medical attention and was diagnosed with a ruptured, necrotic appendix causing peritonitis.

I have an anal fistula and have been advised to have surgery. How long does it take to recover from anal fistula surgery, and what should I be aware of? (Thanh Mai, Ho Chi Minh City)

I frequently experience bloating and indigestion, especially after eating. What can I do to alleviate these symptoms? Is this a disease requiring treatment? (Le Hoang, 33 years old)

Patients should avoid solid foods for at least 24 hours before a colonoscopy and refrain from consuming red or blue liquids for accurate results.