Alpha Radiation Emitters Device for the Treatment of Recurrent Lung Cancer

This study uses a radiation device called "Alpha DaRT" to treat recurring lung or chest tumors. The device delivers targeted alpha radiation (a type of radiation that travels a very short distance) directly into the tumor to kill cancer cells while minimizing damage to surrounding tissue. **You may be eligible if...** - You have a confirmed recurring tumor in the chest area (mediastinum) - You have up to two treatable tumor lesions - The tumor can be accessed and adequately covered by the radiation seeds - Your doctor has confirmed you are a candidate for this type of radiation treatment **You may NOT be eligible if...** - You have more than two target lesions - The tumor cannot be sufficiently covered by the device - Your doctor has not approved you for interstitial radiation Talk to your doctor to see if this trial is right for you.