Endo Sonography is a minimally invasive procedure used to diagnose digestive (GI) and lung diseases. A special endoscope produces detailed images of the lining and walls of your digestive tract and chest, as well as nearby organs such as the pancreas and liver, and lymph nodes, using high-frequency sound waves.
When combined with a fine-needle aspiration procedure, EUS allows your doctor to sample (biopsy) fluid and tissue from your abdomen or chest for analysis. EUS combined with fine-needle aspiration may be a less invasive alternative to exploratory surgery.

Endo Sonography may help in the evaluation of :

• Cancer of the colon, esophagus, lung, pancreas or stomach, and ampullary and rectal cancers
• Lymphoma
• Barrett's esophagus
• Neuroendocrine tumors
• Pancreatitis and pancreatic cysts
• Bile duct stones
• Sarcoidosis

Endo Sonography may help in :

• Assess how deeply a tumor penetrates
• your abdominal wall in esophageal, gastric, rectal, pancreatic and lung cancers
• Determine the extent (stage) of cancer, if present
• Determine if cancer has spread (metastasized) to your lymph nodes or other organs
• Provide precise information about non- small cell lung cancer cells, to guide treatment
• Evaluate abnormal findings from imaging tests, such as cysts of the pancreas
• Guide drainage of pseudocysts and other abnormal collections of fluid in the abdomen
• Permit precise targeting for delivering medication directly into the pancreas, liver and other organs