Pleural biopsies were performed in 24 patients with both needles. In two patients, the
procedure was repeated within a few days. All patients had pleural effusion. The biopsies
were performed at the same time; the biopsy sites were no more than 5 cm distant from each
other. Diagnoses were exclusively pathologic. There was no difference between the needles
in relation to diagnosis; greater size of the fragment, mesothelial cells, and fibrin were most …