Volume 14, no. 3
Pages 47-53

Objective: to identify diagnostic potential of PET-CT in the implementation of various purposes of conducted studies. Material and methods: combined PET-CT was performed in 107 patients for the following indications: primary staging – 26 patients, differential diagnosis – 3 patients, search for primary lesion – 6 patients, suspected relapse – 15 patients, restaging after therapy – 46 patients, treatment dynamics assessment – 11 patients. Results: at restaging process in 9 patients no pathology in PET-CT was detected, 37 patients had lymph node and / or distant organs metastases: of these in 7 patients it was metabolically active foci which were not determined at this stage by other diagnostic methods. In 2 patients other metabolically active primary tumors were also identified. At primary staging in 4 patients PET-CT confirmed absence of distant metastases and possibility of radical surgical treatment, and in 3 patients revealed secondary lesions not detected by other methods. Suspected local recurrence was confirmed by PET-CT in 10 patients and in 5 disproved. Treatment dynamics assessment with PET-CT allowed of revealing efficiency of treatment in 6 patients and inefficiency in 5, that allowed of changing the treatment tactics in time. At PET-CT performed to search for primary lesion, in 3 patients primary focus was not identified, and in 3 patients with suspected metastatic lesion without histological verification diagnosis of cancer pathology was refuted. Differential diagnosis involving PET-CT allowed of refuting diagnosis of cancer pathology in 2 patients and confirming in 1. Findings: PET-CT resolves most questions posed by clinicians that is not always possible using other methods of diagnosis, and also reveals additional changes that may affect the choice of treatment.

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