FNA, CORE BIOPSY & DRAINAGE

An FNA (fine needle aspiration) involves inserting a thin needle into the tissue that requires sampling and then applying suction to remove small fragments of tissue that are then sent for pathology analysis.

A biopsy involves the use of a larger needle which removes a solid block of tissue, also referred to as a “core”. Unlike the FNA where fragmented cells are withdrawn, a core of solid tissue is removed and sent for pathology analysis.

A drainage involves the extraction of a collection of fluid.

All of these interventional procedures are performed by a radiologist, with the assistance of an imaging technologist.

We advise you not to drive for 24 hours following the procedure, so please take this into consideration when scheduling your appointment.

If you are taking blood thinning medications such as Warfarin, Xarelto or Aspirin, please let our staff know. You may need to reduce or cease this medication before the day of the procedure. Please consult with your referring health professional.

You will be escorted into the ultrasound room and asked to lie or sit, depending on the procedural area. The injection site will be sterilised with antiseptic.

An FNA is a safe procedure, performed under ultrasound guidance, that will firstly involve an injection of local anaesthetic to numb the relevant area. 

During an FNA, the specimen is aspirated by inserting the needle into the region of interest with cells being acquired by gently manipulating the needle.

The aspirated cells will be sent for pathologic analysis.

You will be escorted into the ultrasound room and asked to lie or sit, depending on the procedural area. The injection site will be sterilised with antiseptic.

A core biopsy is a safe procedure, performed under ultrasound guidance, that will firstly involve an injection of local anaesthetic to numb the relevant area. 

During a core biopsy, a small incision is made. This allows the core needle to be easily advanced through the skin surface to the lesion. Once appropriately positioned the needle is fired through the lesion making an audible ‘click’ as the sample is acquired.

The biopsy will be sent for pathologic analysis.

You will be escorted into the ultrasound room and asked to lie or sit depending on the procedural area. The injection site will be sterilised with antiseptic.

A drainage is a safe procedure, performed under ultrasound guidance, that will firstly involve an injection of local anaesthetic to numb the relevant area. 

During a drainage, a needle is inserted into the region of interest and reverse pressure is applied to drain fluid.

Following the procedure, you may experience some localised bruising and discomfort which may last for several days.

To avoid exacerbation of bruising, avoid vigorous exercise for 24 hours post procedure.

Ice packs and compression may also be applied at the procedure site to relieve pain and mitigate any additional bruising. Please do not take Aspirin for pain relief due to its blood thinning properties.

  • Your original referral or request form
  • Medicare and any Government concession pension or health care cards
  • Previous relevant imaging

Although unlikely, an infection could occur following the procedure. If the area becomes red, warm or tender, please consult your referring health professional.

FNA, Core Biopsy and Drainage is available at the following
X-Ray & Imaging locations