In this procedure, ultrasound imaging is used to guide a very small needle to the site of a lesion where it is used to extract cells from an abnormal growth for biopsy. This is an extremely useful test in the diagnosis of neck lumps and thyroid nodules or thyroid cancers. The ultrasound probe can help guide the needle to the part of the nodule, mass or lump where the most cells will be in order to get the most useful smears. John Chaplin performs neck and thyroid ultrasound and ultrasound guided needle biopsy in his office at Gillies Hospital and allows a one stop assessment of neck lumps and thyroid nodules.