Fine Needle Aspiration Cytology (FNAC) – Quick, Minimally Invasive Diagnosis in Budapest

Fine needle aspiration cytology (FNAC) is a fast and minimally invasive diagnostic procedure used to collect a small sample of cells or fluid from a suspicious lump or lesion—commonly from the thyroid, lymph nodes, breast, or soft tissues. The goal is to determine whether the lesion is benign or malignant, providing essential information for further treatment planning.

When is aspiration cytology recommended?

FNAC is typically performed when imaging (ultrasound, CT, etc.) detects an abnormality or nodule that requires further investigation. Common indications include:

• Thyroid nodules or cysts

• Enlarged lymph nodes

• Breast lumps

• Unexplained subcutaneous masses

• Soft tissue abnormalities

How is the FNAC procedure performed?

During the procedure, a very fine needle is guided—usually via ultrasound—into the affected area to collect cells. The procedure is usually painless or causes only mild discomfort, and in most cases does not require anesthesia. The collected sample is then examined under a microscope by a specialist to identify any cellular abnormalities.

Who performs the FNAC?

Fine needle aspiration can be performed by experienced radiologists, especially when ultrasound guidance is necessary. In more complex cases or when higher diagnostic accuracy is needed, the procedure may be carried out or evaluated by a cytopathologist—a doctor who specializes in analyzing cells under a microscope. Some clinics work with both radiologists and specialist cytologists to ensure optimal results.

What to know before the examination

• No special preparation is generally required; you can eat and drink normally unless instructed otherwise.

• If you are taking blood thinners, it is important to consult your physician beforehand.

• After the procedure, minor redness, tenderness, or slight bruising may occur at the puncture site, which typically resolves within a few days.

Book a FNAC appointment in Budapest

If you’ve been referred for FNAC due to a thyroid nodule, lymph node swelling, or other tissue lesion, our partner clinics in Budapest offer fast and precise diagnostic services. Whether the sample is taken by a radiologist or a specialist cytologist, you can count on professional, patient-centered care.

Book your appointment online quickly and conveniently — and get the clarity you need with expert support!