What should you know about a small needle biopsy?

A clinician cleans the skin and guides a thin needle into the area being assessed, sometimes using imaging for accurate placement. The sample may contain loose cells or a small core of tissue. A pathologist examines it for cell appearance, tissue structure, and features that help distinguish a benign change from cancer or another condition.

Some samples need additional laboratory tests. Immunohistochemistry can look for proteins in cells, while genomic tumour profiling may examine tumour changes that influence treatment choices. A needle sample may not answer every question, and another sample or test can sometimes be needed.

Tell the team about blood-thinning medicines, allergies, bleeding problems, pregnancy, and previous reactions to local anaesthetic. Follow instructions about eating, drinking, and medicines. Afterward, keep the site clean as advised and avoid strenuous activity if the team recommends a short recovery period.

Ask when results are expected, who will explain them, and whether the sample may be used for further testing. A biopsy result is interpreted with the examination and scans rather than in isolation.

Contact the care team for bleeding that does not settle with firm pressure, increasing redness or swelling, worsening pain, fever, or drainage from the site. Seek urgent help for sudden breathing difficulty, chest pain, fainting, or severe bleeding, depending on where the biopsy was performed.

What type of needle biopsy is planned, and will imaging guide it? Should I change any medicine beforehand? How will discomfort and bleeding be managed? When will the pathology report be ready? Could immunohistochemistry or genomic tumour profiling be needed?