Leiomyosarcoma of the lung. Primary cytodiagnosis in two consecutive cases.

Two cases of primary leiomyosarcoma of the lung are described, in which primary cytodiagnosis of the tumor type was established prior to surgery. The cytologic features of the cell samples obtained and correlated histopathologic findings are described. The cytologic features of pulmonary leiomyosarcomas are sufficiently characteristic to allow definitive diagnosis, if representative cell samples are obtained.