My daughter is 3 years 8 months old...she has a problem of Tunnel wound or sinus on her left hip area...it is there since she was 2 -3 months old only ...we aware about this when she was 8 months old... when pus discharge started...after that we consulted so many doctors..n done sonography MRI also...she had two surgery...for this ...last surgery was done on sep 2018... But pus formation is still on...wound is there doctors are saying it will be ok when she will grownup...n increase her immunity power...but I m tense that when will it will fine..