CT of the brain performed on-call revealed an enhancing intra-axial lesion. The possibility of a primary brain lesion was entertained. Given the patient's age, glioblastoma multiforme (GBM) was the primary consideration.

Brain MRI was performed the next day, and the differential diagnosis did not change, with GBM remaining high on the list.

The patient developed severe shortness of breath, and a CTPA was performed and revealed no pulmonary embolism, however, a large mass was noted. This was pathologically proven to be a bronchogenic carcinoma.