OUTLINE: Two weeks before completing planned radiotherapy, patients undergo assessment of stress appraisal and other factors predictive of post-radiotherapy psychosocial adjustment. Patients complete psychosocial assessments, including measures of patient perceptions of their illness (i.e., cognitive appraisal) and of the factors influencing their perceptions (i.e., uncertainty by the Mishel Uncertainty in Illness Scale-Community Form; symptom distress by the Memorial Symptom Assessment Scale Short Form; and comorbidity by the Charlson Comorbidity Index). Measures of patient social support and self-efficacy for coping are also assessed. At 1 month after completion of radiotherapy, patients undergo repeat assessment of stress appraisal and psychosocial adjustment.