Fig. 2

Reason for diagnosis of Lynch syndrome in relation to age, n = 305; In the age range 10–19 years, 0.3% (n = 1) were diagnosed due to family history and 2.6% (n = 8) due to predictive testing. In the age range 20–29 years 2.6% (n = 8) were diagnosed due to family history, 21% (n = 64) were diagnosed due to predictive testing and 1% (n = 3) were diagnosed due to malignancy. In the age range 30–39 years, 2.6% (n = 8) were diagnosed due to family history, 13.1% (n = 40) were diagnosed due to predictive testing and 3.6% (n = 11) were diagnosed due to malignancy. In the age range 40–49 years, 1% (n = 3) were diagnosed due to family history, 13.1% (n = 40) were diagnosed due to predictive testing and 10.8% (n = 33) were diagnosed due to malignancy. In the age range 50–59 years, 2% (n = 6) were diagnosed due to family history, 7.2% (n = 22) were diagnosed due to predictive testing and 7.2% (n = 22) were diagnosed due to malignancy. In the age range 60–69 years, 0.3% (n = 1) were diagnosed due to family history, 4.3% (n = 13) were diagnosed due to predictive testing and 3.9% (n = 12) were diagnosed due to malignancy. In the age range 70–79 years, 0.7% (n = 2) were diagnosed due to predictive testing and 2% (n = 6) were diagnosed due to malignancy. In the age range 80–89 years, 0.3% (n = 1) were diagnosed due to malignancy. In the age range 90–99 years, 0.3% (n = 1) were diagnosed due to malignancy