Fig. 6From: Diagnostic efficiency of PET/CT in patients with cancer of unknown primary with brain metastasis as initial manifestation and its impact on overall survivalA 64-year-old patient with single metastatic mass lesion in left posterior frontal lobe. a–c Axial CT, PET, and fused PET/CT scan showed active solitary metastatic lesion seen in the left posterior frontal lobe. d Multiplanar fused PET/CT and PET scan showed a cecal mass with active uptake proved by colonscopic biopsy to be adenocarcinoma of caecum. e Multiplanar fused PET/CT and PET scan showed multiple active retroperitoneal lymph nodes. f Multiplanar fused PET/CT and PET scan showed two metastatic active mass lesions in the left lungBack to article page