F-18 FDG PET-CT findings of intraperitoneal carbon particles-induced granulomas mimicking peritoneal carcinomatosis

Clinical Nuclear Medicine
Seok Tae LimMyung-Hee Sohn

Abstract

F-18 FDG PET-CT is a useful modality for monitoring residual or recurrent tumors after surgical resection. We report on 3 patients with intraperitoneal charcoal-induced granulomas mimicking peritoneal carcinomatosis on PET-CT images. Two of them underwent a radical gastrectomy because of advanced gastric cancer, and the other underwent a hemicolectomy because of sigmoid colon cancer. All 3 patients had a history of intraperitoneal chemotherapy using mitomycin C bound to activated carbon particles during surgery. Follow-up PET-CT studies demonstrated increased FDG uptake mimicking peritoneal carcinomatosis on PET images alone. However, the accompanying noncontrast CT showed variously shaped hyperdense nodules in the dependent positions of the peritoneal cavity, including the paracolic gutter and rectovesical space, indicating charcoal-induced granulomas rather than peritoneal carcinomatosis.

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Citations

Jan 31, 2013·European Journal of Nuclear Medicine and Molecular Imaging·Gang ChengAbass Alavi
Mar 21, 2009·Clinical Nuclear Medicine·Yan XingJianhua Song
Sep 6, 2011·Clinical Nuclear Medicine·Myung-Hee SohnChang-Yeol Yim
Mar 13, 2015·The American Journal of Case Reports·Takashi OriiYukihiko Karasawa
Jan 20, 2015·Korean Journal of Radiology : Official Journal of the Korean Radiological Society·Jin Woo ChoiJung-Hyun Yang
Oct 16, 2015·Clinical Nuclear Medicine·Rajani Agarwal SharmaSiew-Fei Ngu

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