Preoperative chemotherapy increases the median survival in patients with non-small-cell lung cancer.

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Paris; and Montero, R. (1975). Thorax, 30,[521][522][523][524][525][526][527]. Surgical

(1977). Thorax, 32,[550][551][552][553][554] An undiagnosed pleural effusion is often a difficult problem that needs histological study for a definitive aetiological diagnosis. In cases of malignant effusions of the pleura, blind biopsy using a needle (Abrams, 1968) has given a high percentage of negative results in our hands (9/24=37 5%). Three other specimens were of doubtful interpretation. For this reason we started to use diagnostic thoracoscopy in our service.Thoracoscopy has not been widely used for diagnostic purposes. We collected information on the technique from the following authors: Matson