Tu1987 A Longitudinal Study of FDG-PET in Crohn’s Disease Patients Receiving Granulocyte/Monocyte Apheresis Therapy

Yoshioka, Shinichiro; Mitsuyama, Keiichi; Kuwaki, Kotaro; Yamauchi, Ryosuke; Yamasaki, Hiroshi; Fukunaga, Shuhei; Takedatsu, Hidetoshi; Tsuruta, Osamu; Torimura, Takuji (2016). Tu1987 A Longitudinal Study of FDG-PET in Crohn’s Disease Patients Receiving Granulocyte/Monocyte Apheresis Therapy. Gastroenterology, 2016 150(4), S998–. doi:10.1016/s0016-5085(16)33380-7 

Background: Endoscopy is the gold standard for the diagnosis and follow-up of patients with Crohn’s disease (CD). However, a less invasive approach is now being sought for the management of these patients. The objective of this study was to examine whether 18Ffluorodeoxyglucose (FDG)-positron emission tomography (PET) might be relevant for monitoring the disease activity in CD patients undergoing granulocyte/monocyte apheresis (GMA). Methods: This study was conducted in 12 patients with CD, who were receiving treatment with 10, once a week GMA sessions with the Adacolumn. The response to treatment was monitored by measuring the standard laboratory variables, the Crohn’s disease activity index (CDAI) score, the international organization for the study of inflammatory bowel diseases (IOIBD) score, and the regional and global bowel uptakes on FDG-PET. Results: In 6 of the 12 patients, significant improvement of the CDAI was observed after the final session of GMA. The patients who showed clinical response to GMA had a decrease in the regional and global bowel uptakes on FDG-PET, whereas those who did not respond showed no change. In the patients who responded to the GMA, the decrease in regional bowel uptake on FDG-PET in each disease area of the same patient varied in parallel. There was a significant correlation between decrease in the global bowel uptake on FDG-PET and improvement of
the CDAI and IOIBD scores. Conclusion: The longitudinal changes in FDG-PET uptakes are of potential clinical interest for assessing the regional and global bowel disease activity in CD patients undergoing GMA therapy.

https://www.gastrojournal.org/article/S0016-5085(16)33380-7/pdf