Well-differentiated neuroendocrine tumor (NET), nonfunctioning, in 43-year-old man (case 16 in Table 3).
A and B, Arterial phase (A) and venous phase (B) coronal multiplanar reformation images show large partially (>50%) cystic mass with thin-to-thick, smooth peripheral enhancement. Note focal crescentic thickening (arrow) along inferior border with intense contrast enhancement best seen on arterial phase. CT differential diagnosis included pancreatic NET and mucinous cystic neoplasm.