thyroid cancer

Mike Sutter has eaten 1,300 tacos so far this year. And it's been tough: He tells NPR's Kelly McEvers about dealing with offbeat taquerias, getting thyroid cancer, and why it's good to have a quest.

After five years, just 12 percent of people diagnosed with papillary thyroid cancer saw their tumors grow by 3 millimeters or more, a study found. And in some people, the tumors shrank.

A federal task force says the risks of screening outweigh benefits. Many thyroid growths never develop into dangerous cancers, and overdiagnosis can lead people to have unnecessary surgery.

The study says rates of thyroid cancer are high for children who lived near the tsunami-crippled nuclear plant in Japan. But other scientists are skeptical of the findings.