Fine-needle aspiration biopsy of the thyroid nodule is a procedure in which a small sample of cells is obtained from a thyroid nodule with the aid of a thin needle under ultrasound guidance.

Medically reviewed by Isabel Casimiro, MD, PhD Thyroid nodules are lumps (growths) made up of abnormal cell clusters that ...

Clinicians have become reliant on fine-needle aspiration (FNA) cytology in the diagnosis of thyroid nodules. We encountered several patients who had thyroid cancer at operation despite having had ...

Endoscopic ultrasound-guided fine needle aspiration biopsy (EUS-FNA) is currently performed on a routine basis at many endoscopic centers and it is evident that this procedure has a major impact ...

While both are called medullary carcinoma, these cancers differ in many ways: ...

A local anesthetic can be infused in the intended region of aspiration. The bone marrow needle can be flushed with an anticoagulant (either heparin or EDTA can be used). Use of the anticoagulant ...

Transtracheal aspiration was performed only if there were ... just inferior to the thyroid cartilage. With an 18-gauge needle, a 30-ml. syringe containing 2 to 4 ml. of sterile 0.9 per cent ...

They also recommend thyroid ultrasonography and fine-needle aspiration for differentiating malignancy and subacute thyroiditis, if necessary. In the second section of the algorithm (“secondary ...