Which screening method uses a small brush to collect cells from the cervix?

The Pap smear is the screening method specifically designed to collect cells from the cervix using a small brush or spatula. This technique is vital for detecting precancerous changes and cervical cancer. During the procedure, a healthcare provider gently scrapes the cervix to gather a sample of cells, which are then examined under a microscope for any abnormalities. This method is known for its effectiveness in identifying cervical changes early on, allowing for timely intervention if necessary.

The other methods mentioned do not involve collecting cells from the cervix directly. Tissue biopsy typically involves the removal of a sample from a suspicious area elsewhere in the body for analysis. Mammograms are specialized X-ray images used for breast cancer screening and do not involve cell collection from the cervix. Chest X-rays are imaging techniques used primarily to assess lung and heart conditions, not for cervical screening. Thus, the Pap smear stands out as the only option directly related to cervical cell collection.