I had a Ct scan last week . it was to check for kidney stones. They called today and said they found a pulmonary nodule on mt left lung that was 11mm . I am 33 yrs old and never smoked .I have had pneumonia several times since 2002. I had a x-ray in 2006 and the Dr said he found a spot but , it was either scar tissue or a calicum deposit . Should I be worried ? I am not sure that this one is in the same spot as before . I am scheduled for another Ct scan on Thursday. I have asked for the earlier x-rays .