before it's too late

example: psa poster for breast cancer, "pink balloon"
source: http://www.momlogic.com/2009/10/the_booby_prize_10_best_breast_cancer_ads.php

analysis:
the image of two pink balloons serves as a family-friendly visual metaphor for a woman's breasts. it's very simple, yet it presents a pretty accurate representation and is extremely effective without being too graphic.

if it is detected early enough, the odds of beating breast cancer are high. however, if it is not caught early on, the prognosis may not be as positive. unfortunately, in some cases, a mastectomy is required, and the visual metaphor succinctly conveys what happens: one of the balloons is cut, and becomes, if i may borrow terminology stemming from the metaphorical comparison, deflated.

please get your balloons regularly screened!