Thyroid nodule

Thyroid nodule
Ultrasound artifacts showing a "comet tail" from a colloid nodule indicate a benign nodule
Specialty	ENT surgery, oncology

Thyroid nodules are nodules (raised areas of tissue or fluid) which commonly arise within an otherwise normal thyroid gland.^[1] They may be hyperplastic or tumorous, but only a small percentage of thyroid tumors are malignant. Small, asymptomatic nodules are common, and often go unnoticed.^[2] Nodules that grow larger or produce symptoms may eventually need medical care. A goitre may have one nodule – uninodular, multiple nodules – multinodular, or be diffuse.