Rhenium Re 188 P2045 in Patients With Lung Cancer Who Have Received or Refused to Receive Prior Chemotherapy

Inclusion Criteria: * Has histologically or cytologically documented Non-Small-Cell Lung Cancer (NSCLC) or Small-Cell Lung Cancer (SCLC) and has advanced or recurrent IIIb or IV NSCLC (adenocarcinoma, squamous cell carcinoma, large cell, mixed or not otherwise specified) or disseminated or recurrent SCLC or any lung cancer which has local recurrence. * Has documentation of progressive disease following prior chemotherapy or who refused to receive standard chemotherapy. * Has measurable tumor (at least 1 cm unidimensionally) in a previously non-irradiated area or, if in previously irradiated area, a substantial increase in size of tumor, based on CT scan within 8 weeks prior to enrollment; tumor in previously irradiated area only if it has increased by 50% or more from previous minimal diameter AND it is more than 8 weeks from the radiation.