Evaluation of Cell Changes in Blood and Tissue in Cancers of the Lung, Esophagus and Lung Lining

Background: * Chromatin is is the structural building block of a chromosome. It is found inside the nucleus of the cell and consists of a complex of DNA and protein. * Cancers of the lung, pleura (lung lining) and esophagus show profound changes in chromatin structure that may affect the course of disease in participants. * A better understanding of these diseases and the genetic changes associated with them may be helpful in developing new treatments for them. Objectives: * To medically evaluate individuals with potential (medically suspicious) or proven cancer of the lung, esophagus, pleura, mediastinum or chest wall, or cancers of other origin that have invaded the lung, and then, to determine eligibility for NCI investigational treatment studies for participants \>18 years of age (adult participants only). * To use clinically obtained biopsies (small pieces of tissue) of tumor and adjacent normal tissue from clinically indicated procedures (standard of care biopsy or surgery), as well as blood and urine samples, from participants with cancer of the lung, esophagus, pleura, mediastinum or chest wall, or cancers of other origin that have invaded the lung, for research into immune and cellular changes of these cancers. Study research includes genetic testing and the growth of laboratory cell lines from participant samples, to examine how genes change drug metabolism. * To permit long-term follow-up of participants with cancer of the lung, esophagus, pleura, mediastinum or chest wall, or cancers of other origin that have invaded the lung, for natural history research on genetics and if the gene expression coincides with clinical response to patient anti-cancer therapies (treatment received at NCI or from participant's own physicians). Eligibility: * Individuals 2 years of age and older with potential (medically suspicious) or proven cancer of the lung, esophagus, pleura, mediastinum or chest wall, or cancers of other origin that have invaded the lung. Note: Ind