Fine-needle aspiration biopsy diagnosis of intrathoracic extramedullary hematopoiesis presenting as a posterior mediastinal tumor in a patient with sickle-cell disease: Case report.

Extramedullary hematopoiesis (EMH) is a rare cause of an intrathoracic mass. Fine-needle aspiration biopsy (FNAB) has been only occasionally documented as a useful tool in diagnosing EMH tumor. We report a case of posterior mediastinal extramedullary hematopoietic mass in an 80-yr-old man with sickle-cell anemia.