Need belly button removed because of umbilical hernia repairs - is this necessary?

I have had 2 umbilical hernia repairs done in the past 12 years. My surgeon, the same one who fixed it prior, now says he has to completely remove my belly button and put mesh inside. I am 47 yrs old, im very thin. He said that I could possibly get acsmall tattoo if I wanted to hide the missing belly button. I need to know if this surgery is absolutely necessary and if it is safe??? I have to have this surgery within the next 2 weeks. PLEASE give me some advice.

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