Inflammatory pseudotumors of the spleen: CT and MRI findings.
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.


CONCLUSIONS
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.
Irie
H
H
Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
Honda
H
H
Kaneko
K
K
Kuroiwa
T
T
Fukuya
T
T
Yoshimitsu
K
K
Aibe
H
H
Hirakata
R
R
Horie
Y
Y
Maeda
T
T
Masuda
K
K
D000328:Adult; D003287:Contrast Media; D005260:Female; D005682:Gadolinium; D019786:Gadolinium DTPA; D006104:Granuloma, Plasma Cell / Q000175:diagnosis*; D006801:Humans; D007089:Image Enhancement; D008279:Magnetic Resonance Imaging; D008297:Male; D009942:Organometallic Compounds; D004369:Pentetic Acid / Q000031:analogs & derivatives; D013158:Splenic Diseases / Q000175:diagnosis*; D014057:Tomography, X-Ray Computed
D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA