Difficult to say without evaluation. "Spots" can correspond to cancer, cysts, benign lesions, or infection.
Under the radiologist's impression should be a list of possibilities that the radiologist think may be the case. If there was suspicion for cancer, more urgent testing would have been recommended.
The fact that only a follow-up CT scan was recommended suggests a more benign lesion.
You may want to discuss the possibilities with your personal physician, or obtain a copy of the CT scan results and bring it to another physician for a second opinion.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
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