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Inflammatory pseudotumors of the spleen: CT and MRI findings
1Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Objective:
Our goal was to elucidate the CT and MRI findings of inflammatory pseudotumors of the spleen.
Methods:
The CT and MRI findings of three patients with inflammatory pseudotumors of the spleen were reviewed and compared with the pathologic findings.
Results:
On the early phase of CT, the masses were hypodense to the normal spleen, and on the delayed phase, they demonstrated delayed enhancement. On T1-weighted MR images, the masses were isointense to the normal spleen, and on T2-weighted images, the masses had heterogeneous low signal intensities. After administration of Gd-DTPA, the masses showed delayed enhancement.
Conclusion:
Inflammatory pseudotumors of the spleen were characterized by low signal intensity on T2-weighted MR images and delayed enhancement after contrast material administration on CT and MRI. The fibrous stroma may contribute to these unusual findings.