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Updated: Feb 1, 2026

Ex vivo Mimicry of Normal and Abnormal Human Hematopoiesis
Published on: April 10, 2012
Nonanemic extramedullary hematopoiesis in the posterior mediastinum
Giang Truong Nguyen1, Trung Ngoc Nguyen1, Thang Duc Vu1
1Department of Cardiothoracic and Vascular Surgery, Hospital 103, Vietnam Military Medical University, Hanoi, Vietnam.
Abstract:
Extramedullary hematopoiesis is a rare condition characterized by the formation of blood cells outside the bone marrow. It is commonly seen in patients with hematopoietic disorders or chronic anemia. Here, we report the case of a 55-year-old patient who had extramedullary hematopoiesis that manifested as an asymptomatic posterior mediastinal mass. Chest computed tomography showed a 30 × 35-mm mass located on the left side of the D11 vertebra. Laboratory investigations revealed no signs of anemia. The tumor was safely and completely removed using video-assisted thoracoscopic surgery. Pathological studies confirmed the extramedullary hematopoiesis nature of the tumor.
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