Gastrointestinal tract

209172 Evaluation of the primary lesion detection in colorectal carcinoma with 18F-FDG PET-CT/Song Jianhua(Dept Nuclear Med,Shanghai 1st Peop Hosp,Shanghai Jiaotong Univ,Shanghai 200080)…∥Chin J Gastrointest Surg.-2009,2(2).-174~177Objective To explore the clinical value of detecting primary lesions of colorectal carcinoma with 18F-FDG PET-CT.Methods Clinical data of 23 cases of colorectal carcinoma collected from April 2007 to June 2008,including PET-CT,endoscopy,operation and pathology,were analyzed retrospectively.Results Of the 23 colorectal cancer patients,including 15 males and 8 females,11 received abdominal CT contrast examination,7 abdominal CT general examination and 5 chest CT examination.The lesions located in caecum in 5 cases,ascending colon 4 cases,transverse colon 2 cases,desending colon 2 cases,sigmoid colon 4 cases,rectum 6 cases.CT images showed local mass,incrassation and nodes in colon.PET images revealed intensely hypermetabolic lesions.The maximum of standard uptake value(SUVmax) was 11.7±9.5,and the delay SUVmax was 14.8±11.0.The bigger was the mass,the higher was the SUV.The highest SUV was 44.8.Metastatic lesions were found in 15 cases.More cases and more metastatic lesions were found by 18F-FDG PET-CT.Conclusion The primary and metastatic lesions of colorectal carcinoma can be deteted sensitively and exactly by 18F-FDG PET-CT,which is helpful in tumor staging and making the treatment plan.11 refs,3 figs.