title: Inflammatory pseudotumors of the spleen: CT and MRI findings.
abstract: 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.
authors.affiliation: Department of Radiology, Faculty of Medicine, Kyushu University, Fukuoka, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Irie
authors.forename: H
authors.initials: H
authors.lastname: Honda
authors.forename: K
authors.initials: K
authors.lastname: Kaneko
authors.forename: T
authors.initials: T
authors.lastname: Kuroiwa
authors.forename: T
authors.initials: T
authors.lastname: Fukuya
authors.forename: K
authors.initials: K
authors.lastname: Yoshimitsu
authors.forename: H
authors.initials: H
authors.lastname: Aibe
authors.forename: R
authors.initials: R
authors.lastname: Hirakata
authors.forename: Y
authors.initials: Y
authors.lastname: Horie
authors.forename: T
authors.initials: T
authors.lastname: Maeda
authors.forename: K
authors.initials: K
authors.lastname: Masuda
mesh_terms: 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
chemical_list: D003287:Contrast Media; D009942:Organometallic Compounds; D004369:Pentetic Acid; D005682:Gadolinium; D019786:Gadolinium DTPA