It has also been used to distinguish responders from nonresponders before any reduction in tumor size occurs. Incidental right iliac fossa small focal uptake (yellow arrow) is noted, which cross-correlated to a small soft tissue lesion in the cecum and turned out to be a synchronous primary adenocarcinoma.ġ8F-FDG PET/CT is more sensitive and specific in certain cancers and has been applied primarily as a staging and restaging tool that can guide patient care.
Maximum-intensity-projection (MIP) image (left panel), CT images (middle panels) and fused images (right panels) of 18F-FDG PET/CT show the primary tumor (arrow head) with mediastinal nodal metastases (black arrow). This review provides guidance for oncologists/ radiotherapists and clinical and surgical specialists on the use of 18F-FDG PET/CT in oncology.Ī 73-year-old woman who came for initial staging of non-small cell lung cancer. In about 27% of the patients, the course of managment is changed. It also allows for monitoring response to therapy and permitting timely modification of therapeutic regimens. It is a valuable tool for staging and restaging of some tumors and has an important role in the detection of recurrence in asymptomatic patients with rising tumor marker levels and patients with negative or equivocal findings on conventional imaging techniques. The combined acquisition of PET and CT has synergistic advantages over PET or CT alone and minimizes their individual limitations. Positron emission tomography with 2-deoxy-2-fluoro- D-glucose integrated with computed tomography ( 18F-FDG PET/CT) has emerged as a powerful imaging tool for the detection of various cancers. Accurate diagnosis and staging are essential for the optimal management of cancer patients.
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