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Diffuse Mesenteric Extramedullary Hematopoiesis with Ascites: Sonography, CT, and MRI Findings

Christopher Holden1, Oliver Hennessy1 and Wai-Kit Lee1

1 All authors: Department of Medical Imaging, St. Vincent's Hospital, University of Melbourne, 41 Victoria Parade, Fitzroy, Victoria 3065, Australia.


Figure 1
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Fig. 1A —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Contrast-enhanced axial CT image shows diffuse infiltration of small bowel mesentery and encasement of small bowel.

 

Figure 2
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Fig. 1B —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Axial T1-weighted image with fat saturation at a similar level to A shows mesenteric infiltrate to be isointense to muscle. Hyperintense fluid within small bowel lumen is iodinated contrast from fluoroscopic study performed on same day.

 

Figure 3
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Fig. 1C —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Corresponding axial T2-weighted image demonstrates mesenteric infiltrate to be iso- to mildly hyperintense to muscle. Liver (L) is markedly hypointense due to transfusion-related secondary hemosiderosis.

 

Figure 4
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Fig. 1D —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Gadolinium-enhanced coronal T1-weighted image with fat saturation shows early mild enhancement of mesenteric infiltrate.

 

Figure 5
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Fig. 1E —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Gadolinium-enhanced coronal T1-weighted image with fat saturation shows late mild enhancement of mesenteric infiltrate.

 

Figure 6
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Fig. 1F —64-year-old man with diffuse mesenteric extramedullary hematopoiesis with ascites. Longitudinal sonogram of mesentery shows hypoechoic soft tissue interposed between two bowel loops (B).

 

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