What are the advantages and disadvantages of appendectomy?

Basically no harm. In the past, Japanese children had their appendix removed when they were born, so they wouldn't get appendicitis. Later, it was found that the appendix may have some influence on human immunity, so now they don't do it. If you have appendicitis, one is conservative treatment, which is anti-inflammatory treatment. Then there is excision. The advantage of excision is that it will not recur. Of course, if it is mild, conservative treatment and fear of surgery will not be removed.