14 Bronchology – Past, Present and Future Diagnostic Procedures In the 1970s, the U.S. National Cancer Institute sponsored lung cancer screen- ing trials at three medical centers. •  John Hopkins University – The John Hopkins Lung Project (JHLP) •  Mayo Clinic – Mayo Lung Project (MLP) •  Memorial Sloan-Kettering Cancer Center (MSKLP) Similar issues were examined in two additional studies, i. e. the Czechoslovak trial and the Japanese trials. Study Subjects Eligibility Group Cases Mortality Detected Rate (MLP) 10,933 Male smokers Prevalence 91 N/A Mayo Lung Age >45 Project 4,618 Age >45 Screened 206 3.2 4,593 Age >45 Control 160 3.0 (JHLP) 5,226 Age >45 Screened 194 3.4 John Hopkins 5,161 Age >45 Control 202 3.8 Lung Project (MSKLP) 5,072 Age >45 Screened 144 2.7 Memorial Sloan- 4,968 Age >45 Control 144 2.7 Kettering Lung Project Czechoslovak 6,364 Male smokers Prevalence 19 N/A Trial Age >40 3,172 Screened 108 3.6 3,174 Control 82 2.6 Study Radiology Sputum Cytology (MLP) 4-monthly 4-monthly Mayo Lung Project (JHLP) Yearly Yearly John Hopkins Lung Project (MSKLP) Yearly Yearly Memorial Sloan- Kettering Lung Project Czechoslovak 6-monthly 6-monthly Trial Prospective Screening Trials for Lung Cancer Back –––––––Table of Contents–––––––Next Back –––––––Table of Contents–––––––Next