Typical and atypical presentations of extramedullary hemopoiesis.

摘要: 1239 emopoiesis is the formation and maturation of blood elements. Hemopoiesis normally occurs in marrow long bones, ribs, vertebrae adult, contradistinction to fetus, which principal sites hemopoiesis are yolk sac, spleen, liver [1, 2] (Fig. 1). When primary adult fail, as myelofibrosis (of many causes) hemoglobinopathies (especially thalassemia sickle cell disease), various extramedullary take on role formation. Extramedullary favors certain such liver, paraspinal regions thorax. However, addition these common hemopoiesis, process can involve virtually any organ or tissue often manifest a mass mimicking neoplasm. Symptoms usually caused by effect. Recognizing imaging findings that may be compatible with important, because biopsy will exclude neoplasm alter management prognosis. Equally important knowledge patient’s clinical history. In this article, we present patients variety manifestations biopsy-proven hemopoiesis.