Fine Needle Aspiration Cytology of Breast Tissue (FNA Cytology)

What Is This Test Used For?

A breast FNA cytology test is often performed when a doctor finds a lump or abnormality during a physical exam, mammogram, or ultrasound. It can also be used to evaluate suspicious areas seen on imaging studies or during a biopsy. This test helps determine if cells are benign (non-cancerous) or suspicious for malignancy (potentially cancerous).

How Is the Test Performed?

You’ll lie down comfortably while a healthcare provider inserts a thin needle into the breast to collect cells. The procedure is quick and usually painless. The sample is then sent to a lab for microscopic examination by a pathologist, who looks for cell patterns that may indicate health or disease status.

Sample Collection and Preparation

No special preparation is needed before the test. You may take pain relievers if needed, but avoid aspirin or blood thinners before the procedure to reduce bleeding risk. The lab technician prepares the sample by spreading the cells on a slide for detailed microscopic analysis.

What Are the Possible Results?

Results can range from normal (no abnormalities) to benign (non-cancerous changes), suspicious for malignancy, or definitive cancer diagnosis. Follow-up care depends on the findings, which your doctor will discuss with you.