non calcified granuloma

Hi,

I hope someone could help me on this and give some peace of mind :-)
I recently had a chest X-ray, it was totally arbitrary. I mean it was part of a medical exam that was required by the university; I am 24 years old, a non smoker and I jog daily. I have never experienced any respiratory problems in the past and there is no ''lung cancer'' history in the family.
The Dr. called me today and informed me that I had a non-calcified granuloma (2 cm in diameter) in the left upper lobe; he requested that I do further scans just to confirm.
Is that a non calcified granuloma is  good thing? I mean having a non calcified nodule is possibly cancer whereas  a granuloma ( non calcified) is supposedly nothing?
May someone kindly reply as I am profoundly troubled by the matter.

Thx