[Recurrent pericarditis revealing a malignant mediastinal mesenchymoma].
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.
Ben Hamda
K
K
Service de cardiologie, Centre hospitalo- universitaire Fattouma Bourguiba, Monastir, 5000, Tunisie. khaldoun.benhamda@rns.tn
Sriha
B
B
Zeghidi
B
B
Mestiri
S
S
Gharbi
M
M
Hafsa
C
C
Trimeche
M
M
Mlika
A
A
Golli
M
M
Maatouk
F
F
Korbi
S
S
Ben Farhat
M
M
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