Sclerosing Extramedullary Hematopoietic Tumor Mimicking Intra-abdominal Sarcoma

To aid in the differentiation, SEMHT has a more solid mass appearance with dense fibrosis and atypical megakaryocytes.3 EMH is the presence of hematopoietic tissue in locations other than the bone marrow. EMH is seen in many disorders such as sickle cell anemia, hemoglobinopathies, thalassemia, hereditary spherocytosis, and MF.5 EMH is most commonly observed in the liver and spleen and is rarely found in the peritoneum, lymph nodes, kidneys, thymus, central nervous system, retroperitoneum, myocardium, uterus, pleura, paraspinal region, or intestines.6-9 CASE REPORT A 57-year-old female patient was examined for the chief complaint of fatigue. Radiological examinations revealed hepatosplenomegaly and hypodense soft tissue lesions measuring 15 x 6 cm in size along the medial liver contour at the liver portal hilus level and 9.8 x 6 cm in size along the right iliac vascular structures in the right lower quadrant (Fig. 1), as well as several enlarged lymph nodes in the paraaortic and paracaval regions (the largest measured 5 cm and was located in the right paracaval region). Radiologically, the soft tissue masses observed along the medial liver contour (15 x 6 cm) invaded the portal vein, and the characteristics of those along the right iliac vascular structures in the right lower quadrant (~9.8 x 6 cm) were reported to be consistent with infiltrative sarcomatous lesion or lymphoma (diffuse infiltrative type), and pathologic evaluation was recommended.