[Mediastinoscopy and bronchial carcinoma. Experience with 600 mediastinoscopies (author's transl)].

Of 600 mediastinoscopies carried out from 1966 to 1973, 479 were performed to assess the operability of a pulmonary carcinoma. Of these, (43%) were positive and (57%) negative. Of the 161 patients found positive during an initial period, 14 were considered candidates for operation. The tumour was irresectable in one patient, who died after 3.5 months; curative resection was possible in one and palliative resection in 12 patients. These 12 patients all died within a year. Of the 184 patients found negative during an initial period, 149 were treated by operation. The tumour proved irresectable in 5%, while curative resection was possible in 76% and palliative resection in 19%. Comparison with the period 1957-1963, when in the same hospital resection was performed after a negative Daniels biopsy, shows that the tumour was irresectable in 20%, while curative resection was possible in 35% and palliative resection in 45%. During a second period, patients with a positive mediastinoscopy were refused operation. Of 89 negative patients, 81 were treated by operation. No tumour was found to be irresectable; curative resection was possible in 78% and palliative resection in 22%. A survival study was made of 100 operated patients with a follow-up from a minimum of two years and four months to a maximum of four years and four months. The early mortality averaged 10%. The late mortality was 31% after curative lobectomy, 43% after curative pneumonectomy, and 100% after palliative resection. The survival was 49%