Department of Surgery, Catholic University of the Sacred Heart, Policlinico "A. Gemelli", Largo A. Gemelli 8, 00168 Rome, Italy.
Jpn J Radiol. 2013 May;31(5):349-51. doi: 10.1007/s11604-013-0184-x. Epub 2013 Feb 6.
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.
一位 31 岁女性因左结肠癌穿孔腺癌并发粪性腹膜炎行急症 Hartmann 手术。辅助化疗 7 个月后，行增强 CT 随访显示多发腹膜和肝结节，FDG-PET/CT 示结节局灶性摄取明显且均匀，高度怀疑疾病复发。结节切除活检显示异物肉芽肿，由纤维壁包围的食物残渣组成。我们报告 1 例结肠癌患者 FDG-PET 上因食物残渣导致的假阳性结果，类似转移性疾病。
