Intrathoracic extramedullary hematopoiesis simulating posterior mediastinal mass--report of a case in patient with beta-thalassemia intermedia.

Intrathoracic involvement of the extramedullary hematopoiesis is a rare condition. It is usually found in patients with thalassemia or hereditary spherocytosis. In the literature, only 79 cases have been reported. Here, in Taiwan, a 22 year-old female patient of beta-thalassemia intermedia presented with posterior mediastinal mass proved as an intrathoracic extramedullary hematopoiesis by thoracoscopic biopsy was reported.