Fig. 4From: A case report of a collision tumor composed of pancreatic ductal adenocarcinoma and peri-pancreatic mucosa-associated lymphoid tissue lymphomaa Diffusion-weighted images of MRI. The peripheral part had a very high signal, while the central part had a relatively lower signal. b Positron emission tomography. A strong accumulation of fluorodeoxyglucose was seen in the central part, suggesting a high-grade malignant tumorBack to article page