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  Indian J Med Microbiol
 

Figure 4: Fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) demonstrating a intensely hypermetabolic lesion with maximum standardized uptake value 15.3 in the rectosigmoid colon associated with marked wall thickening and luminal narrowing, highly suspicious for malignancy. However, colonoscopy showed negative results. 15 days later the patient presented with a paralytic ileus and required surgery. A colonic mass was identified in the operating room in the location identified by the images. The mass was histologically confirmed to represent rectosigmoid adenocarcinoma. The finding identified in the FDG-PET/CT images was considered a true positive for this study since the histological results from the surgical procedure were obtained within a month from the scan. (a-c) Respectively the (a) FDG images (b) CT images and (c) fused images of the hypermetabolism

Figure 4: Fluorodeoxyglucose-positron emission tomography/computed tomography (FDG-PET/CT) demonstrating a intensely hypermetabolic lesion with maximum standardized uptake value 15.3 in the rectosigmoid colon associated with marked wall thickening and luminal narrowing, highly suspicious for malignancy. However, colonoscopy showed negative results. 15 days later the patient presented with a paralytic ileus and required surgery. A colonic mass was identified in the operating room in the location identified by the images. The mass was histologically confirmed to represent rectosigmoid adenocarcinoma. The finding identified in the FDG-PET/CT images was considered a true positive for this study since the histological results from the surgical procedure were obtained within a month from the scan. (a-c) Respectively the (a) FDG images (b) CT images and (c) fused images of the hypermetabolism