　「ただ今までのように穴の掃除ばかりしていては駄目なんです。それじゃ何時まで経っても肉の上りこはないから、今度は治療法を変えて根本的の手術を一思いに遣るより外に仕方がありませんね」

ただ今までのように穴の掃除ばかりしていては駄目なんです。

“Well, ever it have been not well like to only remove the hole.

添削

"You can't just keep cleaning the holes like you have been doing. It's not enough."

It's not good to only clean the holes like before."

それじゃ何時まで経っても肉の上りこはないから、今度は治療法を変えて根本的の手術を一思いに遣るより外に仕方がありませんね

That is no heal flesh the whole time, next change remedy to have no choice but to do basic operation.

添削

"That won't heal the flesh no matter how much time passes, so we have no choice but to try a different treatment and, if necessary, resort to a radical surgery."

"If we keep doing the same thing, the flesh won't heal no matter how much time passes. Therefore, we have no choice but to change the treatment and, if necessary, perform a radical surgery all at once."

肉の上りこ＝腸の肉？

intestines flesh

I don't know.