Dr Chin Looks into Fine Needle Aspiration (FNA) for Nodules: Key to Diagnosis
Discover how Fine Needle Aspiration (FNA) for nodules is the key procedure to accurately diagnose thyroid lumps. Learn more in our latest blog post!
Thyroid nodules are often found during routine exams, blood draws, or imaging. Fine Needle Aspiration (FNA), also known as a fine needle biopsy, is the gold standard for evaluating suspicious nodules. This minimally invasive procedure allows healthcare providers to collect a small sample of tissue from the front of the neck using a thin needle, often under ultrasound guidance. Patients may be asked to pause blood thinners and follow specific instructions for safety. FNA provides a sample of cells, enough to assess thyroid cytology, detect thyroid follicular cells, and identify conditions like Hashimoto thyroiditis or follicular lesion of undetermined significance. The American Thyroid Association and American College of Radiology emphasize FNA’s importance in diagnosing thyroid nodules, reducing unnecessary surgical biopsy and ensuring early detection of malignant nodules.
What Is Fine Needle Aspiration (FNA)?
Fine needle aspiration (FNA) is a common procedure used to evaluate thyroid gland lumps. A hollow needle, guided by sound waves, collects thyroid cells from the nodule or lymph nodes. The procedure, usually performed with local anesthetic, typically causes minimal discomfort. The sample is sent to a pathology lab for analysis. FNA aids in diagnosing thyroid nodules, revealing conditions like thyroid disease or assessing malignancy risk. If results are unclear, additional samples or molecular testing may be used.
How the Procedure Works
Ultrasound guidance allows for precise targeting of thyroid nodules, ensuring tissue or fluid extraction accurately represents the suspicious area. This procedure is typically performed outpatiently, requiring no general anesthesia.
- Ultrasound-Guided Precision: Real-time imaging allows accurate needle placement, especially in small or deep nodules.
- Quick and Low-Risk: The procedure usually takes less than 30 minutes, with minimal discomfort and a low risk of complications.
What Happens After the Sample Is Collected?
The extracted material is examined by a cytopathologist, who uses systems like the Bethesda System for Reporting Thyroid Cytopathology to categorize the results.
- Benign: No signs of cancer; monitoring may be recommended.
- Atypia or Suspicious: May require repeat FNA or surgical consultation.
- Malignant: Referral to a thyroid surgeon or oncologist for treatment planning.
When Is FNA Recommended?
FNA is not performed on all thyroid nodules. Guidelines typically suggest biopsy when:
- The nodule is larger than 1 cm with suspicious ultrasound features.
- There’s a family history of thyroid cancer or prior head and neck radiation.
- The patient experiences symptoms like hoarseness, difficulty swallowing, or a rapidly growing lump.
The Role of ENT Providers in Thyroid Nodule Management
ENT providers assess symptoms like hoarseness and thyroid mass, using ultrasound probes and expertise in neck anatomy. They perform in-office thyroid biopsy, fine needle aspiration (FNA), to collect tissue samples from suspicious sites. This process helps diagnose thyroid nodules, especially in indeterminate cases or potential papillary thyroid cancer. Patients can resume normal activities the same day, and ENT-led FNA supports faster, more accurate treatment planning, especially for those with voice or swallowing symptoms.
- About the Author
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Dr Ronald Chin is an Australian trained Otolaryngologist Head and Neck Surgeon.
After graduating as a Fellow of the Royal Australasian College of Surgeons, Dr Chin undertook further specialised training in Head and Neck Cancer at the Royal College of Surgeons in Ireland.
He has published many research papers and is an active teacher and scholar.
As part of his subspecialty training, Dr Chin has training in Laser, Da Vinci Robotic, Flex Robotic and complex surgical techniques.
In addition to specialised Head and Neck Cancer, Dr Chin also enjoys general adult and paediatric ENT Surgery and practices sinus, snoring/sleep and general paediatric ENT Surgical procedures.
Dr Ronald Chin works as a general Otolaryngologist, offering a wide range of surgical and non-surgical treatments including ear surgery, nose surgery and throat surgery. He provides treatment for chronic conditions such as tonsillitis, sinus problems and problems with hearing.
He is also involved in the diagnosis and treatment of many conditions such as facial paralysis, head and neck cancer and sleep apnea. As well as performing surgery on children, he also provides specialist care for adults, including the treatment of throat disorders, voice loss and ear problems.
Dr Chin has also served as a Conjoint Associate Professor at the University of Sydney, a Conjoint Associate Professor at Western Sydney University and an Adjunct Associate Professor at the University of Technology Sydney.
