- Histologic or cytologic diagnosis of NSCLC, biopsy at diagnosis or on recurrence. Histology may include large cell, squamous cell, undifferentiated, bronchioalveolar or adenocarcinoma but not small cell lung cancer or mixed small and non-small cell lung cancer, or carcinoid. Mixed histology non-small cell lung cancer will be allowed, i.e.: large cell neuroendocrine carcinoma.