RESUMEN
Introduction: Since content of mediastinal cavity as tract. Great vessels and heart are of vital importance. Mediastinal tumours should be diagnosed and treated exact, accurate and on time
Materials and Methods: We have operated 75 patients with mediastinal tumour in Valiasr Hospital [Tehran University of Medical Science] and Ghaem Medical Center [Mashhad University of Medical Science], from 1996-2002
Results: They were 37 female and 38 male, in similar reports in literature both sexes are equal. Frequency of various histologic diagnosis of these patient are: 25 lymphomas [33.33%], 22 thymic tumours [29.33%] 13 neural tumours [17.33%], 6 substernal thyroid [8%], 2 germ cell tumours, 1 cavernous hemangioma, 1 cystic higroma, benign tratoma, 2 invasive condrosarcomas, 2 misclaneus tumours. Our operative approach and procedure have been, 24 left or right thoracotomies, 21 sterenotomies, 14 anterior mediastinotomies, 9 lymph node biopsies, 6 thyroidectomics with cervical incision, 1 higroma resection
Conclusion: Mediastinal tumours are uncommon, regarding to other reports in literature 8 to 10 patients with mediastinal tumours are operated annually in referral centers. And mean rates of our patients have been 11 cases per year [2,3]