Table 1.

Descriptive characteristics of 78 high-risk patients who had a premalignant or malignant lung lesion diagnosed on bronchoscopy-aided biopsy at Roswell Park Cancer Institute and 35 patients who underwent lung cancer resection at the University of Chicago Hospitals

CharacteristicsPatients with premalignant lesions* (n = 78), n (%)Patients with adenocarcinoma (n = 16), n (%)Patients with squamous cell carcinoma (n = 19), n (%)
Age
    Mean (SD)61.2 (10.0)60.1 (10.7)68.5 (7.4)
    Range33-7840-8052-80
Sex
    Female19 (24)6 (38)9 (47)
    Male59 (76)10 (62)10 (53)
Race
    White103 (97)16 (100)11 (58)
    Black3 (3)8 (42)
Smoking status
    Never2 (3)3 (19)1 (5)
    Former47 (60)10 (63)10 (53)
    Current29 (37)2 (13)5 (26)
    Unknown1 (6)3 (16)
Previous lung cancer
    Yes16 (20)
    No62 (80)
COPD
    Yes58 (74)
    No20 (26)
Asbestos exposure
    Yes41 (53)
    No37 (47)
Tumor stage
    I11 (69)7 (37)
    II6 (31)
    III5 (31)5 (26)
    Unknown1 (5)
  • Abbreviation: COPD, chronic obstructive pulmonary disease.

  • * Includes histologic diagnoses of metaplasia, mild dysplasia, moderate dysplasia, and severe dysplasia.