Pilonidal pits

#1
Hi ,
My son had lancing and draining of PIlonidal abscess a month back. So far the abscess has not returned back. But I can see a hole where the boil was. Is this hole the hair follicle (pit) that had started the whole trouble . Also what can I expect.. Will this hole ever close ? The surgeon does not know anything about pit picking. We live in china. Please guide
 
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