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Date Published: 10/01/2022
Online Published: 10/01/2022
Abstract Views: 265
Views PDF: 122
DOI: https://doi.org/10.55046/vjrnm.45.64.2021
Issue
No. 45 (2021)
Section
Scientific research
How to Cite
Thắng, . L. X., Lưu, . N. K. ., Đàn, N. V. ., Dũng, . N. V. ., Thùy Linh, . T. T. ., & Vân Anh, N. T. . (2022). The initial study on imaging characteristics and role of 18FDG-PET/CT in pre-treatment colorectal cancer staging. Vietnamese Journal of Radiology and Nuclear Medicine, 45, 17-23. https://doi.org/10.55046/vjrnm.45.64.2021

The initial study on imaging characteristics and role of 18FDG-PET/CT in pre-treatment colorectal cancer staging

Lê Xuân Thắng, Nguyễn Kim Lưu, Ngô Văn Đàn, Nguyễn Việt Dũng, Trần Thị Thùy Linh, Nguyễn Thị Vân Anh

Main Article Content

Abstract

Objectives: To evaluate the imaging characteristics and the role of 18FDG-PET/CT in pre-treatment colorectal cancer staging.
Subjects and methods: Study on 39 colorectal cancer patients without specific treatment who had taken 18FDG-PET/CT for staging diagnosis, at the Department of Nuclear Medicine, Imaging Center of Military Hospital 103, from February 2017 to November 2020.
Results: The average age was 62.77 ± 14.07. The ability to detect primary tumor lesions in the colorectal of 18FDG-PET/CT was 97.44%.
The majority of patients had rectal tumors, the tumor size was mainly in the range of 5-10 cm and the T3 stage accounted for the most proportion with
60.5%. There was 46.2% of patients had regional lymph node metastasis, in which the group of lymph nodes over 10 mm and the N2 group accounted for a lower proportion, but the mean SUVmax was statistically significantly higher than others group. Distant metastasis was occured mainly in liver, lung-pleural and bone. There were 59.0% patients in stage III and IV. Diagnosis by 18FDG-PET/CT was accurately at 80.77% for T stage and 66.67% for N stage. The sensitivity and specificity, positive predictive value and negative predictive value of 18FDG-PET/CT in the diagnosis of regional lymph node metastasis were 100% and 60%; 55.55% and 100%.

Article Details

Keywords

Colorectal cancer, 18FDG-PET/CT, SUVmax

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