Table 2. Demographic characteristics in family members at risk by generation (spouses excluded).

Family member at risk N = 54	Anterior generation	First generation (index)	Second generation
Total family members at risk	10	18	26
Thyroid nodules ≥ 5 mm	9/10 (90%)	9/18 (50%)	5/26 (19.23%)
Mean age at thyroid nodule detection by ultrasound [years]	68 [55–75]	36.7 [27–53]	19.4 [10–33]
Screening ultrasound
Size nodule [mm]	10.2 [5–22]	14.82 [6.9–38]	6.9 [5–13]
Microcalcifications	2	2	0