1. Inflammatory Pseudotumours in the Abdomen and Pelvis: A Pictorial Essay 
Tony Sedlic, MD, Elena P. Scali, MD, Wai-Kit Lee, MD, Sadhna Verma, MD, Silvia D. Chang, MD 
Canadian Association of Radiologists Journal 
Volume 65, Issue 1, Pages (February 2014)
DOI: /j.carj
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

2. Figure 1
A 57-year-old woman with an inflammatory pseudotumour of the liver. She presented with cholangitis and a history of choledochal cyst resection with choledochojejunostomy 8 years earlier. (A) Arterial, (B) venous, and (C) delayed-phase computed tomography, demonstrating a heterogenous mass in the right hepatic lobe (arrows) and an irregular peripheral and internal enhancement. Pathology indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

3. Figure 2
A 72-year-old man with inflammatory pseudotumour of the liver. Portal venous phase intravenous contrast-enhanced computed tomography, demonstrating a heterogeneous mass (arrows) within the right hepatic lobe. Subtle internal enhancement on the portal venous acquisition is appreciated compared with the arterial phase. Pathology indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

4. Figure 3
A 57-year-old man with an inflammatory pseudotumour of the liver. (A) Portal venous phase computed tomography, demonstrating a low-attenuation lesion within the right lobe (arrows), demonstrating irregular foci of internal enhancement. (B) Axial fluorine-18 fluorodeoxyglucose positron emission tomography image, confirming increased metabolic activity with a very high uptake in the right hepatic lesion (arrow). Pathology indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

5. Figure 4
A 38-year-old man with an inflammatory pseudotumour of the liver. Coronal fast spin-echo T2-weighted magnetic resonance imaging, demonstrating a heterogeneous, complex mass. The cystic or necrotic component (long arrow) within the anterior and medial segments, demonstrating central high-signal intensity surrounded by a thick irregular low-signal intensity rim and lack of enhancement after the administration of dynamic gadolinium. The heterogeneous and predominantly solid component of this mass (short arrow) occupies and expands the lateral segment. A core biopsy was performed, which demonstrated no malignant cells. Pathology of the resection specimen indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

6. Figure 5
A 68-year-old man with an inflammatory pseudotumour of the spleen. (A) Portal venous intravenous contrast-enhanced computed tomography, demonstrating a well-defined splenic mass (arrows) with an irregular central region of high attenuation (arrowhead). (B) Axial T1-weighted magnetic resonance (MR) image with contrast, demonstrating predominately a low-attenuation splenic lesion (arrows) with focal peripheral enhancement (arrowhead). (C) In-phase gradient echo sequence MR image, demonstrating marked susceptibility artifact; a splenectomy was performed, and this finding of magnetic susceptibility was pathologically correlated with iron. (D) Axial T2-weighted fat-saturated MR image, demonstrating a hypointense splenic lesion (arrow). The pathology of the resection specimen indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

7. Figure 6
A 45-year-old woman with an inflammatory pseudotumour of the pancreatic body. Intravenous and oral contrast-enhanced computed tomography, demonstrating a well-defined hypoattenuating lesion (arrow). There was an incidental finding of a right adrenal myelolipoma. A biopsy was undertaken, which demonstrated no malignant cells. Pathology of the resection specimen indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

8. Figure 7
A 60-year-old woman with an inflammatory pseudotumour of the superior portion of the left kidney. Portal venous phase contrast-enhanced computed tomography performed at the time of the biopsy, demonstrating a nonenhancing solid renal mass (arrow). A core biopsy was performed, which suggested the diagnosis of inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

9. Figure 8
A 84-year-old man with a perinephric inflammatory pseudotumour. (A) Axial computed tomography (CT) of the left kidney, demonstrating an ill-defined, irregular soft-tissue mass surrounding the left renal cortex (arrow); a small cortical cyst is incidentally noted. (B) A T2-weighted fat-saturated magnetic resonance (MR) image, demonstrating a irregular, heterogeneous perinephric mass (arrow) with areas of high signal. (C) T1-weighted gadolinium-enhanced fat-saturated MR image in the portal venous phase, demonstrating heterogeneous enhancement (arrow) that corresponds to areas of high T2 signal. A core biopsy was performed, which indicated an inflammatory pseudotumour. The patient was managed nonoperatively with a follow-up CT, which demonstrated interval stability over a 2-year period.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

10. Figure 9
A 49-year-old man with an inflammatory pseudotumour of the small bowel. Computed tomography with intravenous and oral contrast in a patient with a previous small bowel resection who presented with small bowel obstruction (arrowheads) secondary to a heterogeneously enhancing small bowel mass (arrow) proximal to the anastomosis. A core biopsy was performed, which indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

11. Figure 10
A 57-year-old man with a retroperitoneal inflammatory pseudotumour. Intravenous and oral contrast-enhanced computed tomography, demonstrating a large complex cystic mass, with rim calcification (arrow). It extends inferiorly, displacing the anterior renal fascia and descending colon. Pathology results indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

12. Figure 11
A 43-year-old man with a retroperitoneal inflammatory pseudotumour. (A) A T1-weighted magnetic resonance (MR) image and (B) a T2-weighted MR image, demonstrating a lobulated hypointense retroperitoneal soft-tissue mass (arrows) surrounding the left proximal ureter and ureteropelvic junction, which resulted in hydronephrosis and cortical thinning (arrowheads). Pathology results indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

13. Figure 12
A 62-year-old man with a bladder inflammatory pseudotumour. Noncontrast computed tomography, demonstrating a lobulated soft-tissue density mass arising from the posterior wall of the bladder (arrow). Pathology results indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

14. Figure 13
A 50-year-old woman with a cervical inflammatory pseudotumour. Intravenous and oral contrast-enhanced computed tomography, demonstrating a well-defined, mildly enhancing heterogeneous cervical mass (arrows) with punctate calcifications (arrowhead). Pathology results indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions

15. Figure 14
A 47-year-old woman with an ovarian inflammatory pseudotumour. (A) Intravenous contrast-enhanced computed tomography, demonstrating a complex, low-attenuation lobulated partially cystic mass (arrows) with internal septations (arrowhead) arising from the right ovary. (B) A T2-weighted magnetic resonance image, demonstrating a complex right adnexal mass (arrows) with cystic areas (arrowheads) of high signal. A biopsy was performed, which demonstrated no malignant cells. Pathology of the resection specimen indicated an inflammatory pseudotumour.
Canadian Association of Radiologists Journal  , 52-59DOI: ( /j.carj )
Copyright © 2014 Canadian Association of Radiologists Terms and Conditions