These images show the normal anatomy of your tongue. If you stick your tongue way out, you will see these rough bumps on either side. These are the lingual tonsils.
Actually, the lingual tonsils constitute only a part of a ring of lymphatic glandular tissue that surrounds the throat at the base of the tongue. The other parts of the ring are formed by the tonsils and adenoids.
The image above shows the lingual tonsils in a person with head or neck inflammation, in this case viral infection. When the primary illness resolves, the swelling of the lingual tonsils abates as well.