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  • Title: Focal extramedullary haematopoiesis of the spleen: unusual MR appearance with pathological correlation.
    Author: Wang CW, Yu CY, Peng YJ, Wang CY, Chang WC, Huang GS.
    Journal: Br J Radiol; 2008 Aug; 81(968):e211-4. PubMed ID: 18628327.
    Abstract:
    We report the unusual MR appearance of focal extramedullary haematopoiesis (EMH) of the spleen in a 72-year-old man with thrombocytopenia. Variable MR signal characteristics of EMH, which depend upon the amount of fat and the level of haematopoietic activity, have been described previously. We believe, however, that the delayed central enhancement of EMH on MRI findings was exceptional and has not been reported previously. After pathological investigation and correlation, we believe that the central zone containing hypocellular collagenous bundles may account for this specific enhancement.
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