Value of 18F-FDG PET/CT in differentiating primary intestinal diffuse large B-cell lymphoma from colon cancer in the ileocecal region
10.3760/cma.j.cn371439-20250331-00107
- VernacularTitle:18F-FDG PET/CT鉴别回盲部原发性肠弥漫大B细胞淋巴瘤与结肠癌的价值
- Author:
Qiaoliang CHEN
1
;
Di LIANG
;
Jing CHEN
;
Jian HE
Author Information
1. 南京大学医学院附属鼓楼医院核医学科，南京 210008
- Keywords:
Colonic neoplasms;
Lymphoma, large B-cell, diffuse;
Positron emission tomography computed tomography;
Fluorodeoxyglucose F18;
Ileocecal region
- From:
Journal of International Oncology
2025;52(10):628-632
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To investigate the value of 18F-fluorodeoxyglucose ( 18F-FDG) PET/CT in the differential diagnosis of primary intestinal diffuse large B-cell lymphoma (PIDLBCL) and colon cancer in the ileocecal region. Methods:A total of 42 patients with ileocecal tumors admitted to Nanjing Drum Tower Hospital, Affiliated Hospital of Nanjing University Medical School from June 2013 to December 2023 were selected as the study objects, including 17 cases of PIDLBCL and 25 cases of colon cancer. General data and 18F-FDG PET/CT parameters were compared between patients with PIDLBCL and colon cancer in the ileocecal region. Binary logistic regression was used to analyze the independent influencing factors for the differential diagnosis of PIDLBCL and colon cancer in the ileocecal region. The receiver operator characteristic (ROC) curve was used to evaluate the diagnostic efficacy of independent influencing factors. Results:There were statistically significant differences in tumor length diameter ( Z=-2.63, P=0.009), maximum thickness ( Z=-3.26, P=0.001), ileal involvement ( χ2=6.04, P=0.014), intestinal dilation ( χ2=10.38, P=0.001), maximum standardized uptake value (SUV max) ( Z=-3.73, P<0.001), SUV mean ( Z=-3.40, P<0.001), metabolic tumor volume ( Z=-2.37, P=0.018) and total lesion glycolysis ( Z=-2.93, P=0.003) between patients with PIDLBCL and colon cancer in the ileocecal region. Multivariate analysis showed that SUV max ( OR=1.16, 95% CI: 1.04-1.31, P=0.011) and intestinal dilation ( OR=6.64, 95% CI: 1.13-39.10, P=0.036) were both independent influencing factors for the differential diagnosis of PIDLBCL and colon cancer in the ileocecal region. ROC curve analysis showed that, the areas under the curve of SUV max and intestinal dilation for the differential diagnosis of PIDLBCL and colon cancer in the ileocecal region were 0.84 (95% CI: 0.70-0.94) and 0.73 (95% CI: 0.58-0.86), respectively. The optimal cut-off value for SUV max was determined to be 19.14, with a sensitivity of 70.6% and a specificity of 88.0%, while intestinal dilation exhibited a sensitivity of 58.8% and a specificity of 88.0%. Conclusions:18F-FDG PET/CT can be used for the differential diagnosis of PIDLBCL and colon cancer in the ileocecal region, and SUV max and intestinal dilation have high diagnostic efficacy.
