Comparison of patients' statements with examination findings concerning circumcision of a series of 213 male patients admitted to the Roswell Park Memorial Institute indicated disagreement between examination and statement in 34.4 percent of the patients. Persons whose statements agreed and disagreed with examination were similar in birthplace, languages read and spoken, socioeconomic category of occupation, and age. Analysis of the proportion of disagreeing patients examined by each physician indicated general similarity. Characteristics of patients who stated they were not circumcised, when the physician determined they were circumcised, were not significantly different from those who reported circumcision when the examiner recorded the reverse. However, the first-mentioned group was consistently different to a slight extent from the other in characteristics suggesting less familiarity with the English language. Also, there was a smaller proportion of professional workers in this group, and they were somewhat older. Further study regarding the relationship of circumcision to cervical cancer should be based on physical-examination findings with adequate definitions of degree of length of prepuce.