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Intrapancreatic accessory spleen: case report

H Churei¹, H Inoue, M Nakajo

¹Department of Radiology, Faculty of Medicine, Kagoshima University, Japan.

Abdominal Imaging

|March 28, 1998

Summary

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A rare intrapancreatic accessory spleen can mimic a hypervascular pancreatic tumor on imaging. Consider this diagnosis for pancreatic masses with spleen-like CT densities and MR signal intensities.

Area of Science:

Gastroenterology
Radiology
Pathology

Background:

Accessory spleens are congenital anomalies, typically found in the greater omentum or along the splenic vessels.
Intrapancreatic accessory spleens are exceptionally rare and can present diagnostic challenges.

Observation:

A case is presented where an intrapancreatic accessory spleen was initially misidentified as a pancreatic hypervascular tumor.
Radiological imaging, including CT and MRI, revealed characteristics similar to splenic tissue.

Findings:

The intrapancreatic accessory spleen demonstrated comparable CT densities and MR signal intensities to the spleen, both with and without contrast administration.
These imaging features are crucial for differentiating it from actual pancreatic neoplasms.

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Implications:

Radiologists and clinicians should include intrapancreatic accessory spleen in the differential diagnosis of pancreatic masses with specific imaging characteristics.
Accurate diagnosis prevents unnecessary invasive procedures and guides appropriate patient management.