Papaverine and Stereotactic Body Radiotherapy (SBRT) for Non Small Cell Lung Cancer (NSCLC) or Lung Metastases

This phase I trial studies the side effects and how well papaverine hydrochloride and stereotactic radiation therapy body (SBRT) work in treating patients with non-small cell lung cancer. Papaverine hydrochloride may help radiation therapy work better by making tumor cells more sensitive to the radiation therapy. Stereotactic body radiation therapy uses special equipment to position a patient and deliver radiation to tumors with high precision. This method can kill tumor cells with fewer doses over a shorter period and cause less damage to normal tissue. Giving papaverine hydrochloride with SBRT may work in treating patients with non-small cell lung cancer.