A 31-year-old woman presenting with acute abdomen underwent an emergency Hartmann's procedure for fecal peritonitis due to perforated adenocarcinoma of the left colon. Shortly after a 7-month course of adjuvant chemotherapy, follow-up contrast-enhanced CT showed multiple peritoneal and hepatic nodules, showing focal intense and homogeneous FDG uptake on FDG-PET/CT, highly suspected for recurrence of disease. Excisional biopsy of the nodules revealed foreign body granulomas made up of alimentary materials surrounded by a fibrous wall. We report a unique case of a false-positive finding secondary to food residues mimicking metastatic disease on FDG-PET in a patient with colon cancer.
Crucitti, A., Grossi, U., Leccisotti, L., Maggi, F., Ricci, R., Mazzari, A., Tomaiuolo, P., Giordano, A., Food residue granuloma mimicking metastatic disease on FDG-PET/CT, <<JAPANESE JOURNAL OF RADIOLOGY>>, 2013; (Febbraio): 1-5. [doi:10.1007/s11604-013-0184-x] [http://hdl.handle.net/10807/41971]
Food residue granuloma mimicking metastatic disease on FDG-PET/CT
Crucitti, Antonio;Grossi, Ugo;Giordano, A.
2013
Abstract
A 31-year-old woman presenting with acute abdomen underwent an emergency Hartmann's procedure for fecal peritonitis due to perforated adenocarcinoma of the left colon. Shortly after a 7-month course of adjuvant chemotherapy, follow-up contrast-enhanced CT showed multiple peritoneal and hepatic nodules, showing focal intense and homogeneous FDG uptake on FDG-PET/CT, highly suspected for recurrence of disease. Excisional biopsy of the nodules revealed foreign body granulomas made up of alimentary materials surrounded by a fibrous wall. We report a unique case of a false-positive finding secondary to food residues mimicking metastatic disease on FDG-PET in a patient with colon cancer.
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