Previously on this blog, we have glanced at treatises on grapes, strawberries and spaghetti & meatballs as metaphors in medicine. The bean is no less important medically (besides being associated with flatulence):
BONUS: Under the microscope various entities resemble beans, here is an example of a Brenner tumor, a kind of ovarian tumor that has nuclei resembling coffee beans in look. (NB. Coffee beans are strictly speaking not beans)