From a report?: I believe that the wording means the following: "Solitary brain metastasis is in the differential if got known primary--metastasis." This means: of the possible diagnoses based on what is seen on this scan, spread of cancer to one spot in the brain is a possibility. If there is a known source of cancer (such as breast or prostate) then the lesion in the brain has spread from the original cancer.
Answered 3/28/2019
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