PubMed: Endoscopic ultrasound added to mediastinoscopy for preoperative staging of patients with lung cancer. Annema JT, Versteegh MI, Veselic M, Welker L, Mauad T, Sont JK, Willems LN, Rabe KE. Division of Pulmonary Medicine, Leiden University Medical Center, Leiden, The Netherlands. j t anema@lumc. nl CONTEXT: Up to 40% of thoracotomies performed for non-small cell lung cancer are unnecessary… Mesh terms: Biopsy, Fine-Needle/methods Carcinoma, Non-Small-Cell Lung/pathology Carcinoma, Non-Small-Cell Lung/ultrasonography .Endosonograpl humans Lung Neoplasms/* Lung Neoplasms/ultrasonography Lymph Nodes/pathology Lymph Nodes/ultrasonography .Lymphatic Metastasis Mediastinoscopy .Neoplasm Staging/methods .Observer variation ° Preoperative care Research Support, Non-USGovt .Sensitivity and specificityPubMed: Endoscopic ultrasound added to mediastinoscopy for preoperative staging of patients with lung cancer. Annema JT, Versteegh MI, Veselic M, Welker L, Mauad T, Sont JK, Willems LN, Rabe KF. Division of Pulmonary Medicine, Leiden University Medical Center, Leiden, The Netherlands. j.t.annema@lumc.nl CONTEXT: Up to 40% of thoracotomies performed for non-small cell lung cancer are unnecessary…… MeSH Terms: •Biopsy, Fine-Needle/methods •Carcinoma, Non-Small-Cell Lung/pathology* •Carcinoma, Non-Small-Cell Lung/ultrasonography •Endosonography* •Humans •Lung Neoplasms/pathology* •Lung Neoplasms/ultrasonography •Lymph Nodes/pathology •Lymph Nodes/ultrasonography •Lymphatic Metastasis •Mediastinoscopy •Neoplasm Staging/methods* •Observer Variation •Preoperative Care •Research Support, Non-U.S. Gov't •Sensitivity and Specificity