Tented diaphragm on both sides chest x ray

I just did a chest x ray yesterday twice. Both showing mild pleural tenting on both sides. Never had TB or pneumonia. I am a healthy 30 year old male, non smoker amd 6 ft 8 in height. The first doctor said possibly i have scarring and other said lungs are clear. Is it possible to have both lungs or diapraghms tebted naturally? Other than that i have done a full physical and i am healthy.