Thyroid biopsy, fine needle aspiration biopsy (FNA biopsy)

The thyroid is a gland in the neck that produces a hormone that regulates metabolism when the thyroid is overactive (hyperthyroidism).

There are symptoms such as tachycardia, nervousness, palpitations, diarrhoea, heat intolerance, etc. On the other hand, if the thyroid functions less well, patients may experience constipation, cold, drowsiness, etc. The causes of hypothyroidism and hyperthyroidism are many.

In general, a fine needle aspiration biopsy or FNA is recommended for patients with lesions that look suspicious for cancer on ultrasound. The aim is to take a sample of thyroid nodule cells with a needle and syringe for an expert pathologist to analyse them under a microscope.

It is a simple, low-risk procedure for the patient, usually performed in the doctor's office.

First, a neck ultrasound isperformed and the nodule to be biopsied is located and some samples are taken with a syringe and spread on slides for review by the pathologist.

Almost 90% of the time a diagnosis can be obtained, the procedure takes about 15 minutes and the results take about 8 days, but it must be remembered that there may be errors in the diagnosis due to the small amount of material that can be obtained in a puncture and there may be a need to repeat the puncture.

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