Rectosigmoid Intussusception Secondary to Colorectal Carcinoma Imaged With 18F-FDG PET/CT.
Intussusception of bowel in adults is relatively rare and most commonly secondary to gastrointestinal malignancies. We present the case of an 80-year-old man with rectosigmoid adenocarcinoma evaluated via 18F-FDG PET/CT. Imaging revealed rectosigmoid intussusception with a characteristic "target sign" on both PET and C...