title: Malignant fibrous histiocytoma presenting with complete opacification of the hemithorax: A case report.
abstract: BACKGROUND
  Malignant fibrous histiocytoma, a subtype of primary lung sarcoma is a very rare disease. It usually presents as a lung nodules and the final diagnosis is made by immunohistochemical studies.
  
  
  METHODS
  A 45-year-old patient presented with progressive dyspnea, dry cough and right shoulder pain. Chest X-ray revealed complete opacification of the right hemithorax. Chest computed tomography confirmed the presence of a heterogeneous lesion occupying the whole right hemithorax causing a mass effect on the trachea. Ultrasound guided biopsy was done and final pathology was suggestive of malignant fibrous histiocytoma.
  
  
  CONCLUSIONS
  Progressive dyspnea in young otherwise healthy patients should be investigated early on. In our case the presence of right shoulder pain indicates advance disease illustrated by the singular imaging findings.
authors.affiliation: Department of Surgery, Division of General Surgery, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Jean
authors.initials: J
authors.lastname: Salem
authors.affiliation: Department of Internal Medicine, Division of Oncology, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Ali
authors.initials: A
authors.lastname: Shamseddine
authors.affiliation: Department of Surgery, Division of General Surgery, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Mohamad
authors.initials: M
authors.lastname: Khalife
authors.affiliation: Department of Surgery, Division of General Surgery, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Ghina El
authors.initials: GE
authors.lastname: Nounou
authors.affiliation: Department of Surgery, Division of General Surgery, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Abdallah Abou
authors.initials: AA
authors.lastname: El Naaj
authors.affiliation: Department of Internal Medicine, Division of Oncology, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Deborah
authors.initials: D
authors.lastname: Mukherji
authors.affiliation: Department of Diagnostic Radiology, American University of Beirut Medical Center, Beirut, Lebanon.
authors.forename: Ali
authors.initials: A
authors.lastname: Haydar
authors.affiliation: Department of Surgery, Division of General Surgery, American University of Beirut Medical Center, Beirut, Lebanon. Electronic address: wf07@aub.edu.lb.
authors.forename: Walid
authors.initials: W
authors.lastname: Faraj
keywords: Dyspnea; Lung; Malignant fibrous histiocytoma; Sarcoma