Since every pregnancy brings physical changes -- your breasts swell, your joints ache, your skin may develop blotches or stretch marks -- the symptoms of cancer can easily be overlooked.

CNN: Pregnant with cancer

Calling my bluff, Ricardo navigated into a flat stretch of water and told me to check my skin for open cuts (piranha bait).

BBC: Taming the heart of the Peruvian Amazon

He filmed the beads of sweat provoked by the sun, probably even her pores although that smooth, uniform skin seemed to have no pores, no folds or bumps, and not a single stretch mark marred her buttocks.

NEWYORKER: While the Women Are Sleeping