Incidental focal colorectal 18F-fluorodeoxyglucose uptake on positron emission tomography/computed tomography

被引：0

作者：

Soung Hoon Cho ^{[1
]}

Sang Woo Kim ^{[1
]}

Won Chul Kim ^{[1
]}

Jae Myung Park ^{[1
]}

Ie Ryung Yoo ^{[2
]}

Sung Hoon Kim ^{[2
]}

Seong Taek Oh ^{[3
]}

机构：

[1] Division of Gastroenterology, Department of Internal Medicine, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul 137-701, South Korea

[2] Department of Radiology, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul 137-701, South Korea

[3] Department of Surgery, Seoul St. Mary's Hospital, The Catholic University of Korea, Seoul 137-701, South Korea

来源：

World Journal of Gastroenterology | 2013年 / 19卷 / 22期

关键词：

Positron emission tomography; Adenomas; Computed tomography; Colorectal cancer; Colonoscopy;

D O I：

暂无

中图分类号：

R735.3 [肠肿瘤];

学科分类号：

100214 ;

摘要：

AIM: To assess the clinical significance of incidental focal colorectal 18 F-fluorodeoxyglucose ( 18 F-FDG) uptake on 18 F-FDG-positron emission tomography/computed tomography (PET/CT). METHODS: The records of all the cases which had undergone colonoscopy after PET/CT within a two weeks interval were reviewed. Adenomas were considered advanced when they were villous, ≥ 10 mm in size, or had high-grade dysplasia. Colorectal cancers and advanced adenomas are collectively referred to as advanced colorectal neoplasms. Receiver-operating characteristic curve analysis was used to determine thesignificant predictive maximum standardized uptake value (SUVmax) cutoff value for advanced colorectal neoplasms and cancer. RESULTS: Ninety-five colorectal lesions matched the site of incidental focal colorectal 18 F-FDG uptake on PET/CT and 146 did not. Colonoscopy showed advanced colorectal neoplasms corresponding to the site of 18 F-FDG uptake in 49 of the 95 (51.5%) lesions with incidental uptake. Of the lesions without incidental uptake, only 6 of 146 (4.1%) had advanced colorectal neoplasms on colonoscopy, indicating a statistically significant difference between the two groups (P < 0.001). The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and accuracy of incidental focal 18 F-FDG uptake in identifying advanced colorectal neoplasms were 89.1%, 75.3%, 51.6%, 95.9%, and 78.4%, respectively. In detecting only CRC, these values were 89.2%, 69.6%, 34.7%, 97.3%, and 72.6%, respectively. The significant SUVmax cutoff value for advanced colorectal neoplasms (area under the curve 0.755, P < 0.001) was 4.35, with a sensitivity, specificity, PPV, NPV, and accuracy of 75.5%, 65.2%, 69.8%, 71.4% and 70.5%, respectively. For CRC, 5.05 was the significant SUVmax cutoff value (area under the curve 0.817, P < 0.001), with a sensitivity, specificity, PPV, NPV, and accuracy of 84.8%, 71.0%, 80.9%, 89.8%, and 75.8%, respectively. CONCLUSION: The presence of incidental focal colorectal 18 F-FDG uptake on PET/CT with a SUVmax ≥ 4.35 increases the likelihood of an advanced colorectal neoplasm.

引用

页码：3453 / 3458

页数：6

共 3 条

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