what if the result of my xray tells that i have a suspicious densities at right middle lobe?

Hi Dem,

The x-ray should normally be clear. 

Fluids or infections absorb more of the x-rays and show up as a light spot - indicating a density on the film.

By itself you can't tell what it is.  You'll need more testing.  Usually a sputum analysis is performed.  Your doctor may also request a biopsy.

Good luck.  See your doctor.