(HealthDay News) — New cases of lung cancer have decreased over the last 5 years in the United States, according to a report published by the American Lung Association.

The report authors estimated that about 237,000 people will be diagnosed with lung cancer in 2022. The rate of new cases varies by state, with the lowest rate in Utah and the highest in Kentucky.

The authors also noted that the number of new lung cancer cases decreased 11% over the last 5 years. The national average of people alive at 5 years after lung cancer diagnosis is 25%, which represents an improvement of 21% over the last 5 years.

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The data suggest that 26% of lung cancer cases are diagnosed at an early stage and 44% are not diagnosed until a late stage. During the last 5 years, early diagnosis rates increased 17%.

Overall, 21% of lung cancer cases underwent surgery, which was an increase of 4% over the last 5 years. Another 21% of cases did not receive any treatment. Over the last 5 years, treatment rates improved 15%.

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