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Korean J Gastrointest Endosc > Volume 32(3); 2006 > Article
Korean Journal of Gastrointestinal Endoscopy 2006;32(3): 179-183.
18F-FDG-PET으로 진단한 대장 선종의 특성
이화여자대학교 의과대학 내과학교실, *핵의학교실, 의과학연구소
The Characteristics of Colonic Adenoma Detected by 18F-FDG-PET
Yoo-Kyung Cho, M.D., Sung-Ae Jung, M.D., Su-Jung Baik, M.D., Chang-Bae Lee, M.D., Sung-Eun Kim, M.D., Tae-Hun Kim, M.D., Moon-Sun Bae, M.D.*, Ki-Nam Shim, M.D. and Kwon Yoo, M.D.
Departments of Internal Medicine and *Nuclear Medicine, Ewha Womans University College of Medicine, Ewha Medical Research Institute, Seoul, Korea

FDG-PET is widely used for the evaluation of cancer patients. FDG-PET is usually employed for a staging of colorectal cancer and for the early detection of postoperative recurrence of cancer. Areas of focal uptake that suggest colonic lesions, including benign adenoma, may be seen on an FDG-PET image. This study evaluated the characteristics of colonic adenoma as detected by FDG-PET.
60 subjects (M/F: 30:30, mean age: 55⁑11) who underwent both PET study and colonoscopy were enrolled and their data were retrospectively analyzed.
A total of 50 lesions of colonic adenoma (3∼35 mm) were found in 17 subjects by colonoscopy. Compared with the colonoscopic findings, FDG- PET had a positive predictive value of 52.9% and a negative predictable value of 81.4%. The positive rate increased with the size of the colonic adenoma (15 mm, 100.0%; ≥10 mm, 82.4%; <5 mm, 0.0%) and with the protruded type of polyp (sessile, 25.0%; subpedunculated, 47.7%; pedunculated, 90.9%).
FDG-PET positive colonic lesions should raise a concern for not only possible malignancy, but also for the large sized or malignant transforming colonic adenoma. (Korean J Gastrointest Endosc 2006;32:179⁣183)
Key Words: FDG-PET, Colonoscopy, Colonic adenoma
주요어: FDG-PET, 대장내시경 검사, 대장 선종
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