title: [Recurrent pericarditis revealing a malignant mediastinal mesenchymoma].
abstract: BACKGROUND
  The malignant mesenchymoma is a malignant tumour composed of two or more types of non-differentiated tissue, associated with fibrosarcomatous elements. Its mediastinal localisation is exceptional.
  
  
  METHODS
  In a 65 year-old woman, recurrent pericardial effusion revealed a malignant mesenchymoma measuring 11 x 9 x 4 cm, located in the mediastinum and extending towards the pericardium. The histological examination of the surgical piece showed the predominance of an osteo-sarcomatous component. Complete resection was performed with partial pericardectomy, followed by adjuvant radiotherapy.
  
  
  CONCLUSIONS
  Malignant mediastinal mesenchymoma is an exceptional tumour. Its diagnosis is based on anatomopathological study of a mass of anarchic composition, and its poor prognosis is related to its localisation and its capacity to relapse locally.
authors.affiliation: Service de cardiologie, Centre hospitalo- universitaire Fattouma Bourguiba, Monastir, 5000, Tunisie. khaldoun.benhamda@rns.tn
authors.forename: K
authors.initials: K
authors.lastname: Ben Hamda
authors.forename: B
authors.initials: B
authors.lastname: Sriha
authors.forename: B
authors.initials: B
authors.lastname: Zeghidi
authors.forename: S
authors.initials: S
authors.lastname: Mestiri
authors.forename: M
authors.initials: M
authors.lastname: Gharbi
authors.forename: C
authors.initials: C
authors.lastname: Hafsa
authors.forename: M
authors.initials: M
authors.lastname: Trimeche
authors.forename: A
authors.initials: A
authors.lastname: Mlika
authors.forename: M
authors.initials: M
authors.lastname: Golli
authors.forename: F
authors.initials: F
authors.lastname: Maatouk
authors.forename: S
authors.initials: S
authors.lastname: Korbi
authors.forename: M
authors.initials: M
authors.lastname: Ben Farhat
mesh_terms: D000368:Aged; D005260:Female; D006801:Humans; D008479:Mediastinal Neoplasms / Q000175:diagnosis* / Q000628:therapy; D008637:Mesenchymoma / Q000175:diagnosis* / Q000628:therapy; D010493:Pericarditis / Q000209:etiology*; D018714:Radiotherapy, Adjuvant; D012008:Recurrence