Prapaporn PornsuriyasakThitiporn SuwatanapongchedNarathip WangsuppasawadMontian NgodngamthaweesukPantep AngchaisuksiriDivision of Pulmonary and Critical CareDivision of Diagnostic RadiologyDivision of Cardiovascular and Thoracic SurgeryFaculty of Medicine, Ramathibodi Hospital, Mahidol UniversityGynecology Harbor-UniversityMahidol University2018-08-202018-08-202006-03-01Respiratory Care. Vol.51, No.3 (2006), 272-276002013242-s2.0-33745926824https://repository.li.mahidol.ac.th/handle/123456789/23819Intrathoracic extramedullary hematopoiesis is an unusual but well-described entity. The condition is typically found in patients who have chronic hemolytic anemias, especially thalassemia. We report a case of a 38-year-old man with underlying beta thalassemia/hemoglobin E who developed intrathoracic extramedullary hematopoiesis. The hematopoietic masses spontaneously ruptured, resulting in massive hemothorax. The condition was confirmed by video-assisted thoracoscopy and successfully treated with surgery, hydroxyurea, and radiation. © 2006 Daedalus Enterprises.Mahidol UniversityMedicineArticleSCOPUS