title: Difficulties in establishing a timely diagnosis of pulmonary artery sarcoma misdiagnosed as chronic thrombo-embolic pulmonary disease: a case report.
abstract: BACKGROUND
  Pulmonary artery sarcomas are rare neoplasms that are often confused with chronic thrombo-embolic disease, as both can have similar clinical and imaging presentation.
  
  
  METHODS
  In this report, we present a case of a 50-year-old man initially diagnosed with chronic thrombo-embolic pulmonary disease, but who was later found to have pulmonary artery sarcoma with poor survival prognosis. We review the clinical and imaging characteristics of the two diseases and discuss the difficulties in establishing a timely diagnosis.
  
  
  CONCLUSIONS
  Similar clinical features and imaging presentation of pulmonary artery sarcoma and chronic thrombo-embolic pulmonary disease make definitive diagnosis difficult. This case report also illustrates and emphasizes that in any case with no predisposition factors for embolism, no evidence of deep venous thrombosis and pulmonary emboli, and inadequate relief of symptoms with anticoagulation, an alternative diagnosis of pulmonary artery sarcoma should be considered. If pulmonary artery sarcoma is diagnosed late in the course of the disease, there is usually a poor survival outcome.
authors.affiliation: The Clinical Center Nis, Clinic for lung diseases, Department for non specific lung diseases, Bul, Dr, Zorana Djindjica 48, 18 000 Nis, Republic of Serbia . ivanka.djordjevic@gmail.com.
authors.forename: Ivanka
authors.initials: I
authors.lastname: Djordjevic
authors.forename: Tatjana
authors.initials: T
authors.lastname: Pejcic
authors.forename: Milan
authors.initials: M
authors.lastname: Rancic
authors.forename: Milan
authors.initials: M
authors.lastname: Radovic
authors.forename: Petar
authors.initials: P
authors.lastname: Bosnjakovic
authors.forename: Tatjana
authors.initials: T
authors.lastname: Radjenovic-Petkovic
authors.forename: Desa
authors.initials: D
authors.lastname: Nastasijevic-Borovac
authors.forename: Slavica
authors.initials: S
authors.lastname: Golubovic
authors.forename: Dragana
authors.initials: D
authors.lastname: Dacic