A couple blogs I follow have noted a report over in the UK that there are 17,000 pregnant men in the National Health System. At least one of the blogs commented it's a reminder of how easy it is to get garbage into an automated system and thus we should be careful in our reliance on reports.
That's all true, but the problem really is a design problem: apparently there's no validations on the entries for this particular field, or at least there's insufficient validations. One could presumably also find in the report some women with prostate problems and men with gynecological problems. Absence of thought is a universal.