1 The majority of thyroid nodules are benign. 2  Thyroid nodules are more likely to be cancerous at the extremes of age and in males. 3  The most malignant thyroid cancers are seen at the extremes of age.  Most thyroid cancers are found between ages 20 to 50.
In the U.S. Congress, the parliamentarians of the House and Senate serve as formal, nonpartisan advisers to the Speaker of the House and presiding officer of the Senate respectively.
As a rule, the Senate exercises legislative authority on a par with the House (plain bicameral procedure). In institutional matters, the Constitution often requires qualified majorities. In a few matters, the Senate's legislative power is limited to proposing amendments (right of evocation). The Senate has limited legislative powers. This reflects a restrictive conception of the principle of participation. In practice, unicameralism can be considered the norm.