Tech Coloproctol (2017) 21:521–529 DOI 10.1007/s10151-017-1652-6 REVIEW Incidental colorectal FDG uptake on PET/CT scan and lesions observed during subsequent colonoscopy: a systematic review 1,2 1,2 S. J. Kousgaard O. Thorlacius-Ussing Received: 13 February 2017 / Accepted: 1 June 2017 / Published online: 15 June 2017 Springer International Publishing AG 2017 Abstract colonoscopic lesions included neoplasms (n = 1097; 322 Background Incidental colorectal ﬂuorodeoxyglucose cancers), benign lesions (n = 273), and inﬂammatory (FDG) uptake can be observed during a positron emission lesions (n = 71). Colonoscopies were normal in 604 tomography/computed tomography (PET/CT) scan. For patients. In total, 82% of lesions were located in the same clinical and/or histological assessment of the cause, a location as the FDG uptakes. The positive predictive value colonoscopy is then performed. A systematic review was was 70% (95% CI [68–72]). conducted to investigate the relationship between inci- Conclusions Incidental colorectal FDG uptake, as evalu- dental colorectal FDG uptake and lesions observed during ated by subsequent colonoscopy, often reveals neoplastic a subsequent colonoscopy. lesions. Predominantly, lesions were located at the same Methods A literature search was conducted using PubMed, location as FDG uptake. Further investigation is warranted Embase, and Web of Science with the keywords
Techniques in Coloproctology – Springer Journals
Published: Jun 15, 2017
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