Are lung infiltrates common with pneumonia. does that mean lung cancet?

No: Infiltrate is how they describe how it looks on xray.

No: No, it does not mean lung cancer. Infiltrate is a consolidation and inflammation of infected tissue. Should get resolved with treatment.

Family practice : Infiltration on x-ray is seen with pneumonia. That is how we sometimes confirms our diagnosis.

An infiltrate: Is nothing more that a finding of increased whiteness on an x-ray in an area. Infiltrate means to pass into. So actually it means that something ( usually fluid ) has developed in an area of the lung. Although often associated with infection (pneumonia), infiltrates can develop in all kinds of scenarios including cancer.

Common: The most common type of increased density on radiograph is infection or pneumonia. Similar densities can sometimes be seen with pneumonia and atelectasis (collapse of lung). Sometimes if density is not characteristic of pneumonia or atelectasis, further investigation is required with ct of the chest. Otherwise pneumonia usually treated with antibiotic and atelectasis respiraatory therapy.