Solid Pseudopapillary Tumor of the Pancreas Without a Cystic Component

A 38-year-old woman was referred to our hospital for further evaluation of a pancreatic mass that was noted on screening ultrasonography at another hospital. She had no complaints or any history of pancreatic disorders. Laboratory data showed no abnormalities. On computed tomography, a 20-mm-sized, well-demarcated hypoenhancing mass was seen in the body of the pancreas (Figure A; 1, precontrast phase; 2, pancreatic parenchymal phase; 3, portal venous phase). On magnetic resonance imaging, the lesion had low signal intensity on the T1-weighted image and high signal intensity on the T2-weighted image (Figure B). On both computed tomography and magnetic resonance imaging, the mass had neither internal hemorrhage nor a cystic component, and there was no evidence of metastasis to lymph nodes or other organs. On magnetic resonance cholangiopancreatography, there were no abnormal findings in the main pancreatic duct. On endoscopic ultrasonography, the mass was well-defined, nonhomogeneous, and hypoechoic. Preoperatively, an atypical, nonfunctioning endocrine tumor or an atypical, solid pseudopapillary tumor (SPT) of the pancreas was suspected. We performed a distal pancreatectomy combined with splenectomy.

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