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Fig. 3 | Surgical Case Reports

Fig. 3

From: A focal extramedullary hematopoiesis of the spleen in a patient with essential thrombocythemia presenting with a complicated postoperative course: a case report

Fig. 3

Histologic examination and immunohistochemistry of the tumor. Histologic examination revealed a 125 × 45 mm poorly marginated tumor (a arrowheads). Outgrowths of granular cells and erythroid cells were observed in the tumor [hematoxylin and eosin stain, × 2 (b), × 20 (c)]. Immunohistochemistry was positive for CD 71 (d), CD 41 (e), myeloperoxidase (f), and hematopoietic cells, including erythroblasts, granulocytes, and megakaryocytes (× 20)

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