Endoscopic Ultrasound with AspirationMedical editor Lars Aabakken MD
Oslo University Hospital
The location of the tumor or lymph node in the mediastinum determines whether an endoscopic ultrasound-guided fine needle aspiration (EUS) from the esophagus or endobronchial ultrasound (EBUS) should be performed.
EUS with aspiration of lymph nodes in the mediastinum is a minimally invasive examination whereby patients can avoid examinations associated with more risk. With EUS, the mediastinal lymph nodes can be sampled at most levels of the mediastinum.
- Enlarged lymph nodes and/or tumor in the mediastinum raising suspicion of a serious lung disease, cancer in the esophagus or stomach.
- Establish a diagnosis
- Stage determination
- Endoscope with accessories
- Needle for puncture
- Equipment for preparation of cytology specimen
- The patient lies on his/her side and is mildly sedated.
- Application of local anesthesia in the throat.
- The scope is inserted into the esophagus via a mouthpiece.
- The lymph nodes are visualized using ultrasound.
- The aspiration needle is inserted through the work channel of the scope and by ultrasound guidance, into the lymph node.
- Using back-and-forth movements with the needle, cells are sucked out of the lymph node.
- The material is prepared and assessed by a cytologist.
- The procedure can be repeated until representative material is obtained.
- The patient can return home the same day.
- It may take up to one week before the results are available.