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Competing Interests: Competing interests: none declared

Competing Interests: Competing interests: AR delivers training and education for the UK National Screening Programmes.

Background and Objectives: This article examines a cervical screening incident from the 1960s and draws lessons for screening policy., Study Design and Setting: Concern about harmful overtreatment of symptomless lesions prompted university gynecologist Herbert Green to study, between 1965 and 1970, a 'special series' of 33 women with carcinoma in situ (CIS) who were managed with only limited punch or wedge biopsy. These women were carefully followed up but not treated unless they showed evidence of progression to invasive cancer. This paper examines source documents and subsequent publications in order to ascertain lessons from this incident., Results: In keeping with the 1964 Helsinki Declaration, written consent was not sought. Green published the outcomes for his patients with CIS including the 'special series.' A Judicial inquiry (the Cartwright Inquiry) in 1987 concluded that some women had suffered harm and some had died, but numbers and evidence were not clearly stated. Medical case review for the Inquiry identified 25 women with only punch or wedge biopsy; in 21 of these, there were reasons why no further treatment was given; two had developed cervical cancer, and none were recorded as having died. The case review found eight patients, not necessarily in the 'special series,' who 'in retrospect and by 1987 standards' might have benefited from earlier conisation or hysterectomy., Conclusion: Subsequent claims relating to Green's practice have wrongly stated that as many as one hundred women or more had treatment withheld and over 30 died as a result. These claims are inaccurate., (Copyright © 2020 Elsevier Inc. All rights reserved.)