Are you feeling fullness when you swallow? Is there a lump on your throat? It could be thyroid nodules. Thyroid nodules are abnormal growths or lumps that form within the thyroid gland, which is located in the front of your neck, just below the Adam’s apple. These nodules can vary in size and may be solid or filled with fluid. While the majority of thyroid nodules are non-cancerous (benign) and do not typically cause noticeable symptoms, they can sometimes grow large enough to be felt or seen as a visible swelling in the neck.