Endoscopic ultrasound (EUS)
An endoscopic ultrasound (EUS) can be used to help diagnose different types of cancers, including cancer of the lung, stomach, oesophagus and pancreas.
You usually have a biopsy to find out for certain if you have lung cancer. A doctor or nurse takes samples of cells or tissue from the abnormal area. They look at the biopsy samples under a microscope to check for cancer cells.
There are different ways of doing a biopsy. Your cancer doctor or nurse will talk to you about the type of biopsy you will have. This information is about having an endoscopic ultrasound (EUS).
An EUS is similar to an EBUS. An EUS takes a biopsy from the lymph nodes in the middle of the chest. But the doctor does this by passing a small, flexible tube (endoscope) through your mouth and into your gullet (oesophagus). The gullet is behind your windpipe and close to lymph nodes in the chest. The doctor passes a thin needle along the endoscope to take biopsies from the lymph nodes.