Fig. 4From: Diagnostic efficiency of PET/CT in patients with cancer of unknown primary with brain metastasis as initial manifestation and its impact on overall survivalA 49-year-old male with brain metastasis in the right frontal lobe and left parasagittal region from an unknown primary. a, b Axial fused PET/CT and CT scan showed two active metastatic lesions seen in the right frontal lobe and another one in the left parasagittal region. c Multiplanar fused PET/CT and PET scan showed a large mass in the right lung with active uptake proved by bronchoscopic biopsy to be bronchogenic carcinoma. d Multiplanar fused PET/CT scan showed multiple metastatic para-oartic lymph nodes. e Multiplanar fused PET/CT and PET scan showed multiple metastatic active lesions in the liverBack to article page