Hello sir I've done endoscopy hrct chest pft test and covid test before inguinal hernia surgery past week successfuly completed Endoscopy : few deudonial erosion rut positive laxles grade ll Hrct chest : no findings Rtpcr : negative Pft test : small air way obstruction spirometert shows severe restriction fvc %45 and fev1/fvc % ...,> 70 why it's happening I've taken hrct chest normal and also I had surgery but why pft shows like that dear doctors help me get out of this???