Mucinous cystic neoplasm of pancreas in 31-year-old female.Axial contrast-enhanced CT image demonstrates large, well-defined, low-attenuated cystic mass with multiple internal septa in pancreatic tail (not shown). Typical septal calcifications (arrowheads) are noted within lesion. Distal pancreatectomy was performed, and mucinous cystic neoplasm was diagnosed.