Assessment of Symptom-Related Cytokines in Lung and Gastrointestinal (GI) Cancer Patients

Primary Objectives:
* To determine the feasibility of a study that would describe changes of certain circulating inflammatory cytokines (interleukin-1, 6, 8, 10, 12, and tumor necrosis factor-alpha [TNF] and symptoms related to chemoradiation therapy (pre-therapy, during therapy and up to 3 months post-therapy) among patients with lung, esophageal, gastric, colorectal and anal cancer.
* To determine the feasibility of studying neurocognitive function in patients with non-small cell lung cancer (NSCLC) at presentation and during chemoradiation therapy to determine the prevalence, severity, and pattern of cognitive symptoms.