Abstract
Herbst, Ulfelder and Poskanzer1 were the first to notice a high correlation between adenocarcinoma of the vagina in adolescent girls and prior maternal ingestion of diethylstilbestrol. This is a stunning observation. It is supported by five more cases described in this issue by Greenwald et al. In a previous editorial2 Langmuir discussed some clinical and scientific implications of this discovery. Further speculations are now warranted.Neither Herbst nor Greenwald studied a large number of mothers with repeated bleeding or previous pregnancy loss who did not receive stilbestrol. This omission is irrelevant, however, because of the extreme rarity of adenocarcinoma of . . .