Fig. 7
From: Primary myelofibrosis: spectrum of imaging features and disease-related complications
Axial CT demonstrating potential sites of extramedullary haematopoiesis (EMH) in the body. The commonest sites of involvement are the liver and spleen which manifest as hepatosplenomegaly. Less commonly, EMH may present in the periportal region (white arrows) and may be indistinguishable from periportal oedema. Clues to differentiating periportal EMH from periportal oedema include a more lobular appearance to EMH and soft tissue attenuation, whereas periportal oedema is generally less lobular and may have fluid attenuation