J Korean Soc Radiol.  2010 Jan;62(1):67-71. 10.3348/jksr.2010.62.1.67.

The Growth of an Extrapancreatic Solid Pseudopapillary Tumor from the Greater Omentum: A Case Report

• Lee YS
• Lee YH
• Kang EG
• Jeon SJ
• Park SH
• Yun KJ

• KMID: 2208997
• DOI: http://doi.org/10.3348/jksr.2010.62.1.67

Abstract

A solid pseudopapillary tumor is an uncommon tumor of the pancreas that rarely metastasizes to other organs and usually shows good prognosis. An extrapancreatic tumor arising from a solid pseudopapillary tumor is very rare. We report a case of an atypical extrapancreatic solid pseudopapillary tumor that arose from the great omentum and disseminated to the peritoneum, and discuss the radiologic findings, including the CT, US, and MRI.

MeSH Terms

Magnetic Resonance Imaging
Omentum
Pancreas
Pancreatic Neoplasms
Peritoneum
Prognosis
Tomography, X-Ray Computed

Figure

• 

  Fig. 1 A 71-year-old man with peritoneal solid pseudopapillary tumor arose at the greater omentum. A, B. Contrast enhanced axial CT images show a large complex mass at left upper quadrant, with mixed cystic and solid nature, and slight contrast enhancement of peripheral solid portion of the mass. There is no mass at pancreas. Multiple enhancing nodules at right subphrenic space with large amount of ascite. C. Abdominal US shows a complex mass with hyperechoic solid portion and anechoic cystic portions at LUQ area. D, E. MR images show that the mass has heterogeneous internal signal intensity, which indicates that the mass is more complex than suggested by the CT findings. Axial T1-weighted image (D) shows homogenous high signal intensity of the cystic mass and T2-weighted MR image (E) shows that the mass has fluid-fluid level, a finding consistent with hemorrhage. F. Photograph of peritoneal mass at greater omentum in the laparoscopic biopsy. G. Micro-photogram shows multifocal cystic changes (arrows) and scanty microvasculature in monomorphic solid pattern of tumor tissue (hematoxylin-eosin, original magnification ×100).

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