Vai trò của PDG PET/CT trong đánh giá lại giai đoạn ở bệnh nhân ung thư đại trực tràng sau phẫu thuật

SUMMARY

Positron Emission Tomography/Computed Tomography (PET/CT) with 2-[(18)F]fluoro-2-deoxy-d-glucose (FDG) is a hybrid imaging modality having recently become established in the staging, restaging and therapy response assessment of oncology patients. FDGPET/CT has several applications in colorectal cancer imaging including preoperative evaluation of apparently limited metastatic disease, detection of disease recurrence, clarification of equivocal lesions at initial staging, investigation of unexplained rising tumour markers. With a constantly advancing body of evidence and increasing availability, applications of PET/CT in colorectal cancer (CRC) are likely to emerge in using of novel tracers and ‘one-stop’ imaging techniques such as iodinated contrast-enhanced PET/CT. With the use of illustrative clinical examples, this article reviews the utility of FDGPET/CT in the restaging of CRC, discussing its role and limitations in the multimodality imaging of these patients.