PEDIATRICS Vol. 105 No. 3 March 2000, p. e36
Received Jul 16, 1999; accepted Oct 29, 1999.
; Christopher J. Colby
, and
From the Departments of * Genetics, Pediatrics, and § Pathology,
Kaiser Permanente Medical Center; and
Division of Research, Kaiser
Permanente Medical Care Program, Oakland, California.
Objective. We determined the relation between newborn circumcision and both invasive penile cancer (IPC) and carcinoma in situ (CIS) among adult male members of a large health maintenance organization.
Subjects and Methods. Circumcision status was ascertained by a combination of pathology reports, medical record review, and questionnaires for 213 adult male members of a large prepaid health plan who were diagnosed with IPC or CIS.
Results. Of 89 men with IPC whose circumcision status was known, 2 (2.3%) had been circumcised as newborns, and 87 were not circumcised. Of 118 men with CIS whose circumcision status was known, 16 (15.7%) had been circumcised as newborns.
Conclusions. Our results confirm the highly protective effect of newborn circumcision against IPC and the less protective effect against CIS. Key words: circumcision, newborn, penile neoplasms, retrospective studies.
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