LeBlanc, Julia K Endoscopic ultrasound in non-small cell lung cancer and negative mediastinum on computed tomography. [electronic resource] - American journal of respiratory and critical care medicine Jan 2005 - 177-82 p. digital Publication Type: Evaluation Study; Journal Article ISSN: 1073-449X Standard No.: 10.1164/rccm.200405-581OC doi Subjects--Topical Terms: AdultAgedAged, 80 and overBiopsy, NeedleCarcinoma, Non-Small-Cell Lung--diagnostic imagingEndosonographyFemaleHumansLung Neoplasms--diagnostic imagingLymphatic Metastasis--diagnostic imagingMaleMediastinumMiddle AgedNeoplasm StagingProspective StudiesSensitivity and SpecificityThoracotomyTomography, X-Ray Computed