PMC5009637_01
MRI study of the paraspinal masses. Representative images of the paraspinal masses were shown
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Fig1
T6 extending to T12 (10.5 x 5.5 x 4.0 cm on the right and 5.0 x 4.2 x 2.2 cm on the left) (Fig. 1). There was a soft tissue presacral mass ajacent to S5 measuring approximately 2.0 x 2.0 x 1.1 cm.
Pathology of the thoracic paraspinal mass. The thoracic paraspinal mass was resected. H & E stain reviewed dense hematopoietic tissues. Immunostaining was positive for hemoglobin A (red cell) and CD61 (megakaryocytes)
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Fig2
Final pathology of the resected mass revealed dense hematopoietic tissue with erythroid hyperplasia, scattered megaloblastic forms and megakaryocytes, entrapped bony spicules, intervening fibrous septa and adjacent scant adipose tissue (Fig. 2).