Fig. 2
From: Pivotal role of PET/CT in characterization of occult metastasis with undetermined origin
A 45-year-old male patient presented with pathologically proven metastatic adenocarcinoma hepatic focal lesions. PET/CT revealed axial CT (a) and fused PET/CT (b) images showing FDG avid metabolically active sigmoid colon irregular mural tumefaction (SUVmax 15.2 suggested site of primary malignancy) with few pericolic metabolically active lymph nodes. Axial fused PET/CT images showing (c, d) multiple hepatic, peritoneal, and para-aortic nodal metastatic deposits. Coronal PET image (e) shows sigmoid colon tumor and hepatic deposits. Endoscopic biopsy confirmed moderately differentiated adenocarcinoma (TP)