OUTLINE: Patients undergo CT-guided core biopsy of a dominant lung mass and placement of at least 2 cryoprobes. Prior to initiating the freeze, patients receive an interstitial injection of sargramostim (GM-CSF) near the tumor. Patients then undergo percutaneous cryotherapy over 2 hours utilizing a freeze-thaw-freeze cycle. Beginning within 3 days of cryotherapy, patients receive aerosolized GM-CSF twice daily for 1 week. Beginning on day 32, patients may elect to undergo a second course of treatment as described above in the absence of disease progression or unacceptable toxicity.