Increased colonic fluorodeoxyglucose uptake in melanosis coli - a case series of three patients
2021
Abstract We report three Japanese cases with increased colonic 18-fluorodeoxyglucose (FDG) uptake in association with melanosis coli. Case 1: A 56-year-old woman received 18-FDG positron emission tomography (PET) for comprehensive medical checkup. Case 2: A 79-year-old man received FDG PET for follow-up evaluation for intestinal cancer. Case 3: A 51-year-old woman received FDG PET for medical checkup. Each showed increased cecal/ascending colonic uptake without any colonic wall changes. Colonoscopy detected melanosis coli where FDG uptake was demonstrably increased. Neither malignancy nor inflammatory response were confirmed. Succeeding follow-ups showed neither malignant nor inflammatory lesions in any of the patients.
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