EBUS-TBNA for the clarification of PET positive intra-thoracic lymph nodes-an international multi-centre experience.

Introduction: To determine the sensitivity and accuracy of endobronchial ultrasound guided transbronchial needle aspiration (EBUS-TBNA) for clarification of the nature of fluorodeoxyglucose-positron emission tomography (FDG) positive hilar and/or mediastinal lymph nodes in patients with (suspected) lung cancer.

Methods: All consecutive patients who had undergone EBUS-TBNA alone for assessment of abnormal FDG-uptake in hilar and/or mediastinal lymph nodes between January 2005 and August 2007 were reviewed.

Results: One-hundred-nine patients underwent EBUS-TBNA of 127 positron emission tomography positive lymph nodes.

EBUS-TBNA for the diagnosis of central parenchymal lung lesions not visible at routine bronchoscopy.

Background: Obtaining a tissue diagnosis of malignancy is challenging in patients with suspected lung cancer presenting with centrally located intrapulmonary masses.

Objective: (1) To evaluate the yield of endobronchial ultrasound with real-time guided transbronchial needle aspiration (EBUS-TBNA) for diagnosing centrally located lesions after a non-diagnostic conventional bronchoscopy. (2) To assess the impact of EBUS-TBNA on patient management for this indication.

Small cell lung cancer: the importance of the extracellular matrix.

Lung cancer is the leading cause of cancer deaths in the UK and the small cell lung cancer (SCLC) phenotype is the most aggressive form of this disease, with a high metastatic potential and the development of resistance to chemotherapy. Evidence now suggests that these features may be due to important links between the cancer cells and proteins in their local extracellular matrix (ECM). This article reviews the evidence for a chemoprotective effect of extracellular matrix in small cell lung cancer and discusses the importance of integrin-mediated signalling pathways in this setting.

Cross-linking CD98 promotes integrin-like signaling and anchorage-independent growth.

CD98, an early marker of T-cell activation, is an important regulator of integrin-mediated adhesion events. Previous studies suggest that CD98 is coupled to both cellular activation and transformation and is involved in the pathogenesis of viral infection, inflammatory disease, and cancer. Understanding of the molecular mechanisms underlying CD98 activity may have far-reaching practical applications in the development of novel therapeutic strategies in these disease states.