even if there is/are ..., extremely ...This is a combination of あるにしても, meaning “even if there is/are ...,” and 極めて, meaning “extremely.” 極めて modifies the adjective or adverb that follows, so the phrase is usually completed by words such as 少ない or まれだ.
JA: 問題があるにしても極めて少ない。
EN: Even if there are problems, they are extremely few.