Computed Tomography Colonography in Fecal Immunochemical Test Positives in a Colorectal Cancer Screening Program

Sarah Moen, Fleur E. Marijnissen, Jochim S. Terhaar sive Droste, Wouter H. de Vos tot Nederveen Cappel, B. W.Marcel Spanier, Jelle F. Huisman, Evelien Dekker, Jaap Stoker, Ernst J. Kuipers, Maarten G.J. Thomeer, Manon C.W. Spaander*, Leonieke M.M. Wolters, Ivonne Leeuwenburgh, Merel M. Tielemans, Xander G. Vos, Mariette C.A. van Kouwen, Marjon Kerkhof, Ruud W.M. Schrauwen, Renzo P. Veenstra, Lisette G. CapelleMarloes Bigirwamungu-Bargeman, Caroline A. Wientjes, Conny van Enckevort, Sanna A. Mulder, Djuna L. Cahen, Tom C. Seerden, Lennard P.L. Gilissen, Robbert Eichhorn, Paul Bus, Rogier J.J. de Ridder, Erik H.C.J. Buster, Annick B. van Nunen

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Background & Aims:

In the Dutch colorectal cancer (CRC) screening program, fecal immunochemical test (FIT)-positives are offered computed tomography colonography (CTC) instead of colonoscopy in case of comorbidities or patient refusal. Literature on CTC in FIT-positives is scarce, and the risk of post-CT interval CRC (PCT-CRC) in this population is unknown. 

Methods: 

In this cohort study, we assessed CTC yield, clinical management, and risk of PCT-CRC in FIT-positives who underwent CTC between 2014 and 2019 in the Dutch CRC screening program. Data were linked with the National Cancer Registry to identify PCT-CRCs. 

Results: 

Of 4506 FIT-positives scheduled for CTC (1.32% of all FIT-positives), 2794 (62%) underwent CTC (median age, 69 years; 58.8% male, 72.2% due to comorbidities). CRC was detected in 160 (5.7%), polyps ≥10 mm in 554 (19.8%), and polyps 6 to 9 mm in 512 (18.3%). A total of 1047 additional endoscopies (37.5%) were indicated for polyps ≥6 mm or CRC. A total of 987 additional endoscopies (35.3%) were performed. Histologically confirmed advanced neoplasia (AN) was present in 590 (21.1%), CRC in 112 (4.0%), and advanced adenomas in 502 (18.0%). Sixteen PCT-CRCs (0.6%) occurred during a median follow-up of 49 months (interquartile range, 36–64 months). Quality reporting was often lacking, and 5 complications (0.2%) occurred. 

Conclusions: 

CTC in FIT-positive screenees was associated with a lower AN detection rate and a higher PCT-CRC rate compared with what is known from colonoscopy. A substantial proportion of complications occurred, and quality reporting was often lacking. This underlines the need for a structured quality assurance program for CTCs performed in FIT-positives. Critical appraisal of who to refer for CTC and communication about the benefits and pitfalls of CTC are warranted.

Original languageEnglish
Pages (from-to)2616-2624.e3
JournalClinical Gastroenterology and Hepatology
Volume23
Issue number13
DOIs
Publication statusPublished - Dec 2025

Bibliographical note

Publisher Copyright:
© 2025 The Author(s).

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