Turkish Journal of Medical Sciences
Abstract
Background/aim: To investigate whether focal high maximum standardized uptake value (SUVmax) determined by 18-fluorodeoxyglucose (FDG) positron emission tomography (PET)-computed tomography (CT) imaging is correlated with proliferation index in the colorectal region. Materials and methods: SUVmax values of 31 colorectal neoplasms that were incidentally detected during PET-CT examination were compared to dysplasia degree, histopathologic diagnosis, and immunohistochemical expression of the Ki-67 proliferation marker. Results: Statistically significant correlations were found between SUVmax and Ki-67 proliferation index, dysplasia degree, and histopathologic diagnosis. Median SUVmax value was found to be significantly higher in high-risk lesions than low-risk lesions. Conclusion: The Ki-67 proliferation index is an indicator of SUVmax in colorectal tract. SUVmax values can predict malignancy and prognosis in this region. Colonoscopy and biopsy should always be performed whenever a focal high FDG uptake is determined incidentally in a patient.
DOI
10.3906/sag-1410-24
Keywords
Colorectal neoplasm, positron emission tomography, Ki-67 antigen
First Page
1182
Last Page
1187
Recommended Citation
GÜREŞCİ, S, ÖZMEN, Ö, UZMAN, M, ŞİMŞEK, G, TATCI, E, GÖKÇEK, A, & YENİOVA, A. Ö (2016). Correlation of Ki-67 proliferation index and 18-fluorodeoxyglucose uptake in colorectal incidental lesions detected by positron emission tomography-computed tomography. Turkish Journal of Medical Sciences 46 (4): 1182-1187. https://doi.org/10.3906/sag-1410-24
