64-year-old male with pancreatic lesion on CT. ABDOMEN:LIVER, BILIARY TRACT: Status post cholecystectomy. No intra or extra hepatic biliary ductal dilatation. No suspicious hepatic lesions.SPLEEN: No significant abnormality noted.PANCREAS: Inferior-medial to the pancreatic head is a 4.5 x 1.3 cm lesion (series 14 image 128) that is mildly T2 hypointense, and the T1 hyperintense signal does not demonstrate loss of signal on the out- of-phase sequence (i.e. not fat). The size is stable to slightly decreased compared to the 1/21/2015 CT exam. Unfortunately, the lack of a precontrast T1 fat-saturated sequence limits evaluation for enhancement contrast. The lesion is located between the uncinate process and the mesenteric vessels and is favored to arise from the mesentery. The lesion margins are slightly infiltrated with the surrounding mesenteric fat (coronal series 8 image 21, series 13 image 50). No pancreatic ductal dilatation.ADRENAL GLANDS: No significant abnormality noted.KIDNEYS, URETERS: No significant abnormality noted.RETROPERITONEUM, LYMPH NODES: No significant abnormality noted.BOWEL, MESENTERY: Mesenteric lesion as described above. Tiny hiatal hernia.BONES, SOFT TISSUES: No significant abnormality noted.OTHER: No significant abnormality noted.
1.A T1 hyperintense / T2 hypointense lesion between the pancreatic uncinate process and mesenteric vessels is favored to originate from the mesentery and is stable to slightly decreased in size compared to the 1/21/2015 CT exam. The margins demonstrate a slightly infiltrative appearance. The lack of a precontrast T1 fat-saturated sequence limits evaluation for contrast enhancement. The imaging features are nonspecific, and the differential includes mesenteric carcinoid or fibrous tumor with a desmoplastic reaction.